diff --git a/.dockerignore b/.dockerignore
deleted file mode 100644
index f740bfc..0000000
--- a/.dockerignore
+++ /dev/null
@@ -1,6 +0,0 @@
-delta-force-guide-server.iml
-build/
-!.gitlab-ci.yml
-!build/libs/*.jar
-.idea/
-.gradle
\ No newline at end of file
diff --git a/.gitea/workflows/build-and-deploy.yml b/.gitea/workflows/build-and-deploy.yml
deleted file mode 100644
index caed485..0000000
--- a/.gitea/workflows/build-and-deploy.yml
+++ /dev/null
@@ -1,86 +0,0 @@
-name: Build and Deploy
-
-on:
-  release:
-    types: [published]
-
-env:
-  APP_NAME: delta-force-guide-server
-
-jobs:
-  build-and-release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up JDK 21 (Corretto)
-        uses: actions/setup-java@v4
-        with:
-          java-version: 21
-          distribution: corretto
-          cache: gradle
-
-      - name: Build with Gradle
-        run: >
-          ./gradlew bootJar -x test
-          -PartefactVersion="${{ gitea.event.release.tag_name }}"
-          -PbuildChannel=stable
-          -Pvendor=${{ vars.VENDOR }}
-
-      - name: Resolve JAR file path
-        id: jar
-        run: |
-          JAR_PATH=$(find build/libs -name '*.jar' | head -1)
-          echo "file=$JAR_PATH" >> "$GITHUB_OUTPUT"
-
-      - name: Upload JAR to Gitea Release
-        run: |
-          TAG="${{ gitea.event.release.tag_name }}"
-          FILE="${{ steps.jar.outputs.file }}"
-          ASSET_NAME="${APP_NAME}-${TAG}.jar"
-          curl -X POST \
-            -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
-            -H "Content-Type: multipart/form-data" \
-            -F "attachment=@${FILE};filename=${ASSET_NAME}" \
-            "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases/${{ gitea.event.release.id }}/assets?name=${ASSET_NAME}"
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Log in to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ vars.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
-
-      - name: Generate image tags
-        id: meta
-        run: |
-          DOCKERHUB_USER="${{ vars.DOCKER_HUB_USERNAME }}"
-          echo "tag_version=${DOCKERHUB_USER}/${APP_NAME}:${{ gitea.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
-          echo "tag_latest=${DOCKERHUB_USER}/${APP_NAME}:latest" >> "$GITHUB_OUTPUT"
-
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          file: Dockerfile.ci
-          build-args: |
-            JAR_FILE=${{ steps.jar.outputs.file }}
-            IMAGE_VERSION=${{ gitea.event.release.tag_name }}
-            IMAGE_VENDOR=${{ vars.VENDOR }}
-            BUILD_DATE=${{ gitea.event.release.published_at }}
-          push: true
-          tags: |
-            ${{ steps.meta.outputs.tag_version }}
-            ${{ steps.meta.outputs.tag_latest }}
-
-      - name: Push README to Docker Hub
-        uses: christian-korneck/update-container-description-action@v1
-        env:
-          DOCKER_USER: ${{ vars.DOCKER_HUB_USERNAME }}
-          DOCKER_PASS: ${{ secrets.DOCKER_HUB_TOKEN }}
-        with:
-          destination_container_repo: ${{ vars.DOCKER_HUB_USERNAME }}/${{ env.APP_NAME }}
-          provider: dockerhub
-          readme_file: README.md
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 8f5999c..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,10 +0,0 @@
-FROM amazoncorretto:21 AS builder
-WORKDIR /app
-ADD . .
-RUN chmod +x ./gradlew && \
-    ./gradlew build -x test
-
-FROM amazoncorretto:21-alpine AS runner
-WORKDIR /app
-COPY --from=builder /app/build/libs/delta-force-guide-server-1.0.0.jar app.jar
-ENTRYPOINT ["java", "-jar", "app.jar"]
diff --git a/Dockerfile.ci b/Dockerfile.ci
deleted file mode 100644
index 7925330..0000000
--- a/Dockerfile.ci
+++ /dev/null
@@ -1,19 +0,0 @@
-FROM amazoncorretto:21-alpine
-WORKDIR /app
-
-ARG JAR_FILE
-ARG IMAGE_VERSION=dev
-ARG IMAGE_VENDOR=OnixByte
-ARG BUILD_DATE
-
-COPY ${JAR_FILE} app.jar
-
-LABEL org.opencontainers.image.title="delta-force-guide-server" \
-      org.opencontainers.image.description="REST API backend for managing Delta Force game firearm builds and modifications" \
-      org.opencontainers.image.version="${IMAGE_VERSION}" \
-      org.opencontainers.image.vendor="${IMAGE_VENDOR}" \
-      org.opencontainers.image.source="https://git.onixbyte.com/onixbyte/delta-force-guide-server" \
-      org.opencontainers.image.licenses="MIT" \
-      org.opencontainers.image.created="${BUILD_DATE}"
-
-ENTRYPOINT ["java", "-jar", "app.jar"]
diff --git a/build.gradle.kts b/build.gradle.kts
deleted file mode 100644
index a98947a..0000000
--- a/build.gradle.kts
+++ /dev/null
@@ -1,78 +0,0 @@
-plugins {
-    java
-    alias(libs.plugins.spring.boot)
-    alias(libs.plugins.spring.dependency.management)
-}
-
-val artefactVersion: String by project
-val buildChannel: String by project
-val vendor: String by project
-
-group = "com.onixbyte.helix"
-version = artefactVersion
-
-tasks.withType<JavaCompile> {
-    options.encoding = "UTF-8"
-}
-
-java {
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
-    toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
-    }
-}
-
-dependencies {
-    implementation(libs.jspecify.core)
-    implementation(platform(libs.aws.sdk.bom))
-    implementation(libs.aws.sdk.s3)
-    implementation(libs.commons.io)
-    implementation(libs.commons.lang)
-    implementation(libs.commons.collections)
-    implementation(libs.hypersistence.core)
-    implementation(platform(libs.onixbyte.versionCatalogue))
-    implementation(libs.onixbyte.tuple)
-    implementation(libs.onixbyte.commonToolbox)
-    implementation(libs.onixbyte.mathToolbox)
-    implementation(libs.onixbyte.identityGenerator)
-    implementation(libs.onixbyte.captcha)
-    implementation(libs.onixbyte.regions)
-    implementation(libs.onixbyte.cryptoToolbox)
-    implementation(libs.jwt.core)
-    implementation(libs.spring.boot.configurationProcessor)
-    implementation(libs.spring.boot.actuator)
-    implementation(libs.spring.boot.starter.web)
-    implementation(libs.spring.boot.starter.webFlux)
-    implementation(libs.spring.boot.starter.validation)
-    implementation(libs.spring.boot.starter.redis)
-    implementation(libs.spring.boot.starter.cache)
-    implementation(libs.spring.boot.starter.jpa)
-    implementation(libs.mybatis.starter.core)
-    implementation(libs.flyway.core)
-    implementation(libs.flyway.postgresql)
-    implementation(libs.jackson.jsr310)
-    implementation(libs.spring.boot.starter.doc)
-    implementation(libs.spring.boot.starter.security)
-    testImplementation(libs.spring.boot.starter.test)
-    testImplementation(libs.reactor.test)
-    testImplementation(libs.mybatis.starter.test)
-    testImplementation(libs.spring.security.test)
-    runtimeOnly(libs.postgres.driver)
-    testRuntimeOnly(libs.h2.database)
-    testRuntimeOnly(libs.junit.launcher)
-}
-
-tasks.processResources {
-    filesMatching("application.yaml") {
-        expand(
-            "appVersion" to artefactVersion,
-            "channel" to buildChannel,
-            "vendor" to vendor
-        )
-    }
-}
-
-tasks.test {
-    useJUnitPlatform()
-}
diff --git a/config/application-prod.yaml.example b/config/application-prod.yaml.example
deleted file mode 100644
index e68c145..0000000
--- a/config/application-prod.yaml.example
+++ /dev/null
@@ -1,57 +0,0 @@
-spring:
-  datasource:
-    url: jdbc:postgresql://localhost:5432/dfguide_dev
-    username: postgres
-    password: 123456
-    driver-class-name: org.postgresql.Driver
-  data:
-    redis:
-      host: localhost
-      port: 6379
-      database: 0
-      # password: qwerty # Uncomment if password is necessary
-
-logging:
-  pattern:
-    # dateformat: dd MMM yyyy HH:mm:ss.SSS # Modify this for custom date format.
-
-app:
-  cookie:
-    http-only: true
-    secure: false
-    same-site: none
-    path: '/'
-    max-age: P1D
-  cors:
-    allowed-origins: # Cross-origin allowed origins
-      - "http://localhost:5173" # Dev server for vite.
-      - "http://localhost:4173" # Preview server for vite.
-    allow-credentials: true # Must be set to `true` since we are using cookie. You can change it only when you have modified how this application executing authentication.
-    allow-private-network: false
-    allowed-headers:
-      - "Content-Type"
-      - "Authorization"
-    allowed-methods:
-      - GET
-      - POST
-      - PUT
-      - PATCH
-      - DELETE
-    exposed-headers:
-      - "Content-Type"
-      - "Authorization"
-    max-age: PT2H
-  jwt:
-    issuer: dfguide.local # Issuer host
-    secret: qwertyuiopasdfghjklzxcvbnm123456 # JWT singing secret, a 32-byte long or longer string is recommended
-    valid-time: PT2H # JWT valid duration
-  webhook:
-    github:
-      secret: 123456
-      allowed-users: [ octotcat, onixbyte ]
-
-springdoc:
-  api-docs:
-    enabled: true # Set to `false` if you do not need api docs (recommended in production mode).
-  swagger-ui:
-    enabled: true # Set to `false` if you do not need swagger ui (recommended in production mode).
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
deleted file mode 100644
index d9650f6..0000000
--- a/gradle/libs.versions.toml
+++ /dev/null
@@ -1,78 +0,0 @@
-[versions]
-jspecifyVersion = "1.0.0"
-javaJwtVersion = "4.5.1"
-postgresDriverVersion = "42.7.9"
-h2Version = "2.2.224"
-springBootVersion = "3.5.13"
-reactorVersion = "3.7.8"
-junitPlatformVersion = "1.12.2"
-onixbyteVersion = "3.4.0"
-onixbyteCaptcha = "1.1.0"
-onixbyteRegions = "2025.12.0"
-awsSdkVersion = "2.25.48"
-commonsIoVersion = "2.16.1"
-commonsCollections = "4.5.0"
-commonsLangVersion = "3.20.0"
-mybatisVersion = "3.0.5"
-jacksonVersion = "2.19.2"
-hypersistenceVersion = "3.14.0"
-springDependencyManagementVersion = "1.1.7"
-springDocVersion = "2.8.16"
-
-[libraries]
-# General Utilities
-jspecify-core = { group = "org.jspecify", name = "jspecify", version.ref = "jspecifyVersion" }
-commons-io = { group = "commons-io", name = "commons-io", version.ref = "commonsIoVersion" }
-commons-collections = { group = "org.apache.commons", name = "commons-collections4", version.ref = "commonsCollections" }
-commons-lang = { group = "org.apache.commons", name = "commons-lang3", version.ref = "commonsLangVersion" }
-jackson-jsr310 = { group = "com.fasterxml.jackson.datatype", name = "jackson-datatype-jsr310", version.ref = "jacksonVersion" }
-
-# Onixbyte Ecosystem
-onixbyte-versionCatalogue = { group = "com.onixbyte", name = "version-catalogue", version.ref = "onixbyteVersion" }
-onixbyte-tuple = { group = "com.onixbyte", name = "tuple" }
-onixbyte-commonToolbox = { group = "com.onixbyte", name = "common-toolbox" }
-onixbyte-cryptoToolbox = { group = "com.onixbyte", name = "crypto-toolbox", version.ref = "onixbyteVersion" }
-onixbyte-mathToolbox = { group = "com.onixbyte", name = "math-toolbox" }
-onixbyte-identityGenerator = { group = "com.onixbyte", name = "identity-generator" }
-onixbyte-captcha = { group = "com.onixbyte", name = "captcha", version.ref = "onixbyteCaptcha" }
-onixbyte-regions = { group = "com.onixbyte", name = "regions4j", version.ref = "onixbyteRegions" }
-
-# Persistence & Database
-mybatis-starter-core = { group = "org.mybatis.spring.boot", name = "mybatis-spring-boot-starter", version.ref = "mybatisVersion" }
-spring-boot-starter-jpa = { group = "org.springframework.boot", name = "spring-boot-starter-data-jpa" }
-hypersistence-core = { group = "io.hypersistence", name = "hypersistence-utils-hibernate-63", version.ref = "hypersistenceVersion" }
-postgres-driver = { group = "org.postgresql", name = "postgresql", version.ref = "postgresDriverVersion" }
-h2-database = { group = "com.h2database", name = "h2", version.ref = "h2Version" }
-spring-boot-starter-redis = { group = "org.springframework.boot", name = "spring-boot-starter-data-redis", version.ref = "springBootVersion" }
-flyway-core = { group = "org.flywaydb", name = "flyway-core" }
-flyway-postgresql = { group = "org.flywaydb", name = "flyway-database-postgresql" }
-
-# Spring Boot Core & Web
-spring-boot-starter-web = { group = "org.springframework.boot", name = "spring-boot-starter-web" }
-spring-boot-starter-webFlux = { group = "org.springframework.boot", name = "spring-boot-starter-webflux" }
-spring-boot-starter-validation = { group = "org.springframework.boot", name = "spring-boot-starter-validation" }
-spring-boot-starter-cache = { group = "org.springframework.boot", name = "spring-boot-starter-cache" }
-spring-boot-configurationProcessor = { group = "org.springframework.boot", name = "spring-boot-configuration-processor" }
-spring-boot-actuator = { group = "org.springframework.boot", name = "spring-boot-starter-actuator" }
-
-# Security & Auth
-spring-boot-starter-security = { group = "org.springframework.boot", name = "spring-boot-starter-security" }
-jwt-core = { group = "com.auth0", name = "java-jwt", version.ref = "javaJwtVersion" }
-
-# Spring Doc
-spring-boot-starter-doc = { group = "org.springdoc", name = "springdoc-openapi-starter-webmvc-ui", version.ref = "springDocVersion" }
-
-# Cloud Services
-aws-sdk-bom = { group = "software.amazon.awssdk", name = "bom", version.ref = "awsSdkVersion" }
-aws-sdk-s3 = { group = "software.amazon.awssdk", name = "s3" }
-
-# Testing
-spring-boot-starter-test = { group = "org.springframework.boot", name = "spring-boot-starter-test", version.ref = "springBootVersion" }
-spring-security-test = { group = "org.springframework.security", name = "spring-security-test" }
-reactor-test = { group = "io.projectreactor", name = "reactor-test", version.ref = "reactorVersion" }
-junit-launcher = { group = "org.junit.platform", name = "junit-platform-launcher", version.ref = "junitPlatformVersion" }
-mybatis-starter-test = { group = "org.mybatis.spring.boot", name = "mybatis-spring-boot-starter-test", version.ref = "mybatisVersion" }
-
-[plugins]
-spring-boot = { id = "org.springframework.boot", version.ref = "springBootVersion" }
-spring-dependency-management = { id = "io.spring.dependency-management", version.ref = "springDependencyManagementVersion" }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 1b33c55..0000000
Binary files a/gradle/wrapper/gradle-wrapper.jar and /dev/null differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index aaaabb3..0000000
--- a/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,7 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.4-bin.zip
-networkTimeout=10000
-validateDistributionUrl=true
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
deleted file mode 100755
index 23d15a9..0000000
--- a/gradlew
+++ /dev/null
@@ -1,251 +0,0 @@
-#!/bin/sh
-
-#
-# Copyright © 2015-2021 the original authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-
-##############################################################################
-#
-#   Gradle start up script for POSIX generated by Gradle.
-#
-#   Important for running:
-#
-#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
-#       noncompliant, but you have some other compliant shell such as ksh or
-#       bash, then to run this script, type that shell name before the whole
-#       command line, like:
-#
-#           ksh Gradle
-#
-#       Busybox and similar reduced shells will NOT work, because this script
-#       requires all of these POSIX shell features:
-#         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
-#
-#   Important for patching:
-#
-#   (2) This script targets any POSIX shell, so it avoids extensions provided
-#       by Bash, Ksh, etc; in particular arrays are avoided.
-#
-#       The "traditional" practice of packing multiple parameters into a
-#       space-separated string is a well documented source of bugs and security
-#       problems, so this is (mostly) avoided, by progressively accumulating
-#       options in "$@", and eventually passing that to Java.
-#
-#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
-#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
-#       see the in-line comments for details.
-#
-#       There are tweaks for specific operating systems such as AIX, CygWin,
-#       Darwin, MinGW, and NonStop.
-#
-#   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
-#       within the Gradle project.
-#
-#       You can find Gradle at https://github.com/gradle/gradle/.
-#
-##############################################################################
-
-# Attempt to set APP_HOME
-
-# Resolve links: $0 may be a link
-app_path=$0
-
-# Need this for daisy-chained symlinks.
-while
-    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
-    [ -h "$app_path" ]
-do
-    ls=$( ls -ld "$app_path" )
-    link=${ls#*' -> '}
-    case $link in             #(
-      /*)   app_path=$link ;; #(
-      *)    app_path=$APP_HOME$link ;;
-    esac
-done
-
-# This is normally unused
-# shellcheck disable=SC2034
-APP_BASE_NAME=${0##*/}
-# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
-
-# Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD=maximum
-
-warn () {
-    echo "$*"
-} >&2
-
-die () {
-    echo
-    echo "$*"
-    echo
-    exit 1
-} >&2
-
-# OS specific support (must be 'true' or 'false').
-cygwin=false
-msys=false
-darwin=false
-nonstop=false
-case "$( uname )" in                #(
-  CYGWIN* )         cygwin=true  ;; #(
-  Darwin* )         darwin=true  ;; #(
-  MSYS* | MINGW* )  msys=true    ;; #(
-  NONSTOP* )        nonstop=true ;;
-esac
-
-CLASSPATH="\\\"\\\""
-
-
-# Determine the Java command to use to start the JVM.
-if [ -n "$JAVA_HOME" ] ; then
-    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
-        # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD=$JAVA_HOME/jre/sh/java
-    else
-        JAVACMD=$JAVA_HOME/bin/java
-    fi
-    if [ ! -x "$JAVACMD" ] ; then
-        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-else
-    JAVACMD=java
-    if ! command -v java >/dev/null 2>&1
-    then
-        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-
-Please set the JAVA_HOME variable in your environment to match the
-location of your Java installation."
-    fi
-fi
-
-# Increase the maximum file descriptors if we can.
-if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
-    case $MAX_FD in #(
-      max*)
-        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC2039,SC3045
-        MAX_FD=$( ulimit -H -n ) ||
-            warn "Could not query maximum file descriptor limit"
-    esac
-    case $MAX_FD in  #(
-      '' | soft) :;; #(
-      *)
-        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC2039,SC3045
-        ulimit -n "$MAX_FD" ||
-            warn "Could not set maximum file descriptor limit to $MAX_FD"
-    esac
-fi
-
-# Collect all arguments for the java command, stacking in reverse order:
-#   * args from the command line
-#   * the main class name
-#   * -classpath
-#   * -D...appname settings
-#   * --module-path (only if needed)
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
-
-# For Cygwin or MSYS, switch paths to Windows format before running java
-if "$cygwin" || "$msys" ; then
-    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
-
-    JAVACMD=$( cygpath --unix "$JAVACMD" )
-
-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    for arg do
-        if
-            case $arg in                                #(
-              -*)   false ;;                            # don't mess with options #(
-              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
-                    [ -e "$t" ] ;;                      #(
-              *)    false ;;
-            esac
-        then
-            arg=$( cygpath --path --ignore --mixed "$arg" )
-        fi
-        # Roll the args list around exactly as many times as the number of
-        # args, so each arg winds up back in the position where it started, but
-        # possibly modified.
-        #
-        # NB: a `for` loop captures its iteration list before it begins, so
-        # changing the positional parameters here affects neither the number of
-        # iterations, nor the values presented in `arg`.
-        shift                   # remove old arg
-        set -- "$@" "$arg"      # push replacement arg
-    done
-fi
-
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
-# Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
-#     and any embedded shellness will be escaped.
-#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
-#     treated as '${Hostname}' itself on the command line.
-
-set -- \
-        "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
-        "$@"
-
-# Stop when "xargs" is not available.
-if ! command -v xargs >/dev/null 2>&1
-then
-    die "xargs is not available"
-fi
-
-# Use "xargs" to parse quoted args.
-#
-# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
-#
-# In Bash we could simply go:
-#
-#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
-#   set -- "${ARGS[@]}" "$@"
-#
-# but POSIX shell has neither arrays nor command substitution, so instead we
-# post-process each arg (as a line of input to sed) to backslash-escape any
-# character that might be a shell metacharacter, then use eval to reverse
-# that process (while maintaining the separation between arguments), and wrap
-# the whole thing up as a single "set" statement.
-#
-# This will of course break if any of these variables contains a newline or
-# an unmatched quote.
-#
-
-eval "set -- $(
-        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
-        xargs -n1 |
-        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
-        tr '\n' ' '
-    )" '"$@"'
-
-exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
deleted file mode 100644
index db3a6ac..0000000
--- a/gradlew.bat
+++ /dev/null
@@ -1,94 +0,0 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-@rem SPDX-License-Identifier: Apache-2.0
-@rem
-
-@if "%DEBUG%"=="" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%"=="" set DIRNAME=.
-@rem This is normally unused
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if %ERRORLEVEL% equ 0 goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
diff --git a/server/.gitattributes b/server/.gitattributes
deleted file mode 100644
index 8af972c..0000000
--- a/server/.gitattributes
+++ /dev/null
@@ -1,3 +0,0 @@
-/gradlew text eol=lf
-*.bat text eol=crlf
-*.jar binary
diff --git a/server/.gitea/workflows/build-and-deploy.yml b/server/.gitea/workflows/build-and-deploy.yml
deleted file mode 100644
index caed485..0000000
--- a/server/.gitea/workflows/build-and-deploy.yml
+++ /dev/null
@@ -1,86 +0,0 @@
-name: Build and Deploy
-
-on:
-  release:
-    types: [published]
-
-env:
-  APP_NAME: delta-force-guide-server
-
-jobs:
-  build-and-release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up JDK 21 (Corretto)
-        uses: actions/setup-java@v4
-        with:
-          java-version: 21
-          distribution: corretto
-          cache: gradle
-
-      - name: Build with Gradle
-        run: >
-          ./gradlew bootJar -x test
-          -PartefactVersion="${{ gitea.event.release.tag_name }}"
-          -PbuildChannel=stable
-          -Pvendor=${{ vars.VENDOR }}
-
-      - name: Resolve JAR file path
-        id: jar
-        run: |
-          JAR_PATH=$(find build/libs -name '*.jar' | head -1)
-          echo "file=$JAR_PATH" >> "$GITHUB_OUTPUT"
-
-      - name: Upload JAR to Gitea Release
-        run: |
-          TAG="${{ gitea.event.release.tag_name }}"
-          FILE="${{ steps.jar.outputs.file }}"
-          ASSET_NAME="${APP_NAME}-${TAG}.jar"
-          curl -X POST \
-            -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
-            -H "Content-Type: multipart/form-data" \
-            -F "attachment=@${FILE};filename=${ASSET_NAME}" \
-            "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/releases/${{ gitea.event.release.id }}/assets?name=${ASSET_NAME}"
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Log in to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ vars.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
-
-      - name: Generate image tags
-        id: meta
-        run: |
-          DOCKERHUB_USER="${{ vars.DOCKER_HUB_USERNAME }}"
-          echo "tag_version=${DOCKERHUB_USER}/${APP_NAME}:${{ gitea.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
-          echo "tag_latest=${DOCKERHUB_USER}/${APP_NAME}:latest" >> "$GITHUB_OUTPUT"
-
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          file: Dockerfile.ci
-          build-args: |
-            JAR_FILE=${{ steps.jar.outputs.file }}
-            IMAGE_VERSION=${{ gitea.event.release.tag_name }}
-            IMAGE_VENDOR=${{ vars.VENDOR }}
-            BUILD_DATE=${{ gitea.event.release.published_at }}
-          push: true
-          tags: |
-            ${{ steps.meta.outputs.tag_version }}
-            ${{ steps.meta.outputs.tag_latest }}
-
-      - name: Push README to Docker Hub
-        uses: christian-korneck/update-container-description-action@v1
-        env:
-          DOCKER_USER: ${{ vars.DOCKER_HUB_USERNAME }}
-          DOCKER_PASS: ${{ secrets.DOCKER_HUB_TOKEN }}
-        with:
-          destination_container_repo: ${{ vars.DOCKER_HUB_USERNAME }}/${{ env.APP_NAME }}
-          provider: dockerhub
-          readme_file: README.md
diff --git a/server/.gitignore b/server/.gitignore
deleted file mode 100644
index e026c93..0000000
--- a/server/.gitignore
+++ /dev/null
@@ -1,162 +0,0 @@
-### macOS
-# General
-.DS_Store
-.AppleDouble
-.LSOverride
-
-# Thumbnails
-._*
-
-# Files that might appear in the root of a volume
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-.com.apple.timemachine.donotpresent
-
-# Directories potentially created on remote AFP share
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-
-### Linux
-*~
-
-# temporary files which can be created if a process still has a handle open of a deleted file
-.fuse_hidden*
-
-# Metadata left by Dolphin file manager, which comes with KDE Plasma
-.directory
-
-# Linux trash folder which might appear on any partition or disk
-.Trash-*
-
-# .nfs files are created when an open file is removed but is still being accessed
-.nfs*
-
-# Log files created by default by the nohup command
-nohup.out
-
-### Windows
-
-# Windows thumbnail cache files
-Thumbs.db
-Thumbs.db:encryptable
-ehthumbs.db
-ehthumbs_vista.db
-
-# Dump file
-*.stackdump
-
-# Folder config file
-[Dd]esktop.ini
-
-# Recycle Bin used on file shares
-$RECYCLE.BIN/
-
-# Windows Installer files
-*.cab
-*.msi
-*.msix
-*.msm
-*.msp
-
-# Windows shortcuts
-*.lnk
-
-### JetBrains IDE
-# Covers JetBrains IDEs: IntelliJ, GoLand, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
-# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
-
-# User-specific stuff
-.idea
-
-# Gradle and Maven with auto-import
-*.iml
-*.ipr
-
-# File-based project format
-*.iws
-
-# IntelliJ
-out/
-
-# JIRA plugin
-atlassian-ide-plugin.xml
-
-# Crashlytics plugin (for Android Studio and IntelliJ)
-com_crashlytics_export_strings.xml
-crashlytics.properties
-crashlytics-build.properties
-fabric.properties
-
-# Editor-based HTTP Client
-http-client.private.env.json
-
-### Server
-# Compiled class file
-*.class
-
-# Log file
-*.log
-
-# BlueJ files
-*.ctxt
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-*.jar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-replay_pid*
-
-# Config
-config/*.yml
-config/*.yaml
-config/*.properties
-
-# Tests
-test/
-
-### Gradle
-.gradle
-**/build/
-!**/src/**/build/
-
-!gradle/
-!gradle/wrapper
-!gradle/wrapper/gradle-wrapper.jar
-!gradle/wrapper/gradle-wrapper.properties
-gradle-app.setting
-.gradletasknamecache
-
-### Claude Code
-.claude/settings.local.json
-.claude/memory/
-.claude/plans/
-.claude/worktrees/
-.claude/scheduled_tasks.json
-
-# Eclipse Gradle plugin generated files
-# Eclipse Core
-.project
-# JDT-specific (Eclipse Java Development Tools)
-.classpath
-
-gradle.properties
-
-# frp config
-frpc.toml
diff --git a/server/CLAUDE.md b/server/CLAUDE.md
deleted file mode 100644
index 3e567dd..0000000
--- a/server/CLAUDE.md
+++ /dev/null
@@ -1,109 +0,0 @@
-# CLAUDE.md
-
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Coding Standards
-
-- **Style**: Follow the Google Java Coding Style as the foundation.
-- **Indentation**: Use 4 spaces — no tabs.
-- **Line length**: Maximum 100 characters per line.
-- **Comments**: All code comments must use British English spelling (e.g. "colour" not "color", "behaviour" not "behavior", "serialise" not "serialize", "analyse" not "analyze", "traveller" not "traveler").
-
-## Build & Test Commands
-
-```bash
-# Build the project (skip tests)
-./gradlew build -x test
-
-# Run all tests
-./gradlew test
-
-# Run a single test class
-./gradlew test --tests "com.onixbyte.deltaforceguide.service.PasswordEncoderTest"
-
-# Run a specific test method
-./gradlew test --tests "com.onixbyte.deltaforceguide.service.PasswordEncoderTest.generatePassword"
-
-# Build the full JAR
-./gradlew bootJar
-```
-
-The project uses Gradle with Java 21 (Amazon Corretto). Tests use JUnit 5 with the Spring Boot test framework, H2 in-memory database for test runtime, and Spring Security test support. Tests require an active `dev` profile.
-
-## Code Architecture
-
-**Delta Force Guide Server** — A REST API backend for managing Delta Force game firearm builds/modifications.
-
-### Package structure
-
-```
-com.onixbyte.deltaforceguide
-├── client/           # External service clients (TokenClient for JWT)
-├── config/           # Spring beans: Security, CORS, Cache/Redis, Jackson, MyBatis, Spring Data
-├── controller/       # REST controllers (Firearm, Modification, Tag, Auth)
-├── domain/
-│   ├── converter/    # JPA attribute converters (FirearmTypeConverter)
-│   ├── dto/          # Request/response records (FirearmRequest, ModificationResponse, etc.)
-│   └── entity/       # JPA entities (Firearm, Modification, User, Accessory, Tuning)
-├── enumeration/      # Enums (FirearmType)
-├── exeption/         # BizException (custom runtime exception with HTTP status)
-├── filter/           # TokenAuthenticationFilter (JWT auth via OncePerRequestFilter)
-├── manager/          # Thin @Transactional wrappers around repositories
-├── mapper/           # MyBatis mappers (configured but currently unused)
-├── properties/       # @ConfigurationProperties records (Cors, Token, Cookie)
-├── repository/       # Spring Data JPA repositories
-├── security/
-│   ├── authentication/  # Custom UsernamePasswordAuthentication impl
-│   └── provider/        # UsernamePasswordAuthenticationProvider
-├── service/          # Business logic layer (FirearmService, ModificationService, AuthService, etc.)
-├── shared/           # Constants and utility classes (CookieName, CredentialProvider, JacksonModules)
-└── utils/            # Helpers (DateTimeUtil)
-```
-
-### Key design decisions
-
-- **JPA + native queries**: Most CRUD uses Spring Data JPA. Native queries (in `ModificationRepository`) handle JSONB tag filtering with Postgres `@>` operator.
-- **Custom auth flow**: JWT tokens in httpOnly cookies (`AccessToken`). Spring Security with a custom `UsernamePasswordAuthenticationProvider` and `TokenAuthenticationFilter`. Tokens are auto-renewed within 5 min of expiry.
-- **JSONB storage**: `Modification.tags` and `Modification.accessories` (including nested `Tuning` objects) are stored as JSONB columns using Hypersistence Utils `JsonType`.
-- **Strict layering**: The call chain must follow `Controller → Service → Manager → Repository/Mapper`. Skipping layers (e.g. Controller calling Manager directly, Service calling Repository directly) is not permitted. Each layer has a distinct responsibility: Controller handles HTTP concerns, Service contains business logic, Manager manages `@Transactional` boundaries and data access coordination, Repository/Mapper handles raw data access.
-- **DTOs as Java records**: All request/response objects are immutable records with static `from()` factory methods for entity→DTO conversion.
-- **Flyway migrations**: SQL migrations in `src/main/resources/db/migration/` — V2 (init), V3 (bullet/damage fields), V4 (user), V5 (accessories JSONB column).
-
-### Data model
-
-- `firearm` table: id, name, type (int→FirearmType enum), level, calibre, fire_rate, armour_damage, body_damage, review
-- `modification` table: id, firearm_id (FK→firearm), name, code, tags (jsonb), accessories (jsonb), note, author, video_url
-- `app_user` table: id, username, email
-- `user_credential` table: user_id, provider, credential (hashed)
-
-### API endpoints
-
-| Path                          | Methods          | Auth                                 |
-|-------------------------------|------------------|--------------------------------------|
-| `/firearms`                   | GET, POST        | GET public, POST requires auth       |
-| `/firearms/{id}`              | GET, PUT, DELETE | GET public, PUT/DELETE requires auth |
-| `/modifications`              | GET, POST        | GET public, POST requires auth       |
-| `/modifications/{id}`         | GET, PUT, DELETE | GET public, PUT/DELETE requires auth |
-| `/modifications/batch`        | POST             | Requires auth                        |
-| `/modifications/batch-delete` | DELETE           | Requires auth                        |
-| `/tags`                       | GET              | Public                               |
-| `/auth/login`                 | POST             | Public                               |
-| `/auth/logout`                | POST             | Authenticated                        |
-
-### Commit convention
-
-Conventional commits: `feat:`, `chore:`, `fix:`. Messages are in English, present tense imperative style.
-
-### External dependencies
-
-- **DB**: PostgreSQL (via Flyway migrations), H2 in test
-- **Cache**: Redis (via Spring Cache + RedisTemplate with GenericJackson2JsonRedisSerializer)
-- **Auth**: java-jwt (auth0), BCrypt
-- **Docs**: springdoc-openapi (Swagger UI) on dev profile
-- **Onixbyte internal libs**: version-catalogue, tuple, common-toolbox, math-toolbox, identity-generator, captcha, regions
-- **AWS**: S3 SDK
-
-### Profiles
-
-- `dev`: Enables Swagger UI, connects to dev DB/Redis at `dfguide.onixbyte.cn`. Config in `config/application-dev.yaml`.
-- Default profile: Used for production, no Swagger, connects to production datasource.
diff --git a/server/LICENCE b/server/LICENCE
deleted file mode 100644
index 73c61fd..0000000
--- a/server/LICENCE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT Licence
-
-Copyright (c) 2026 OnixByte
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/server/README.md b/server/README.md
deleted file mode 100644
index 13455ae..0000000
--- a/server/README.md
+++ /dev/null
@@ -1,150 +0,0 @@
-# Delta Force Guide Server
-
-REST API backend for managing **Delta Force** game firearm builds and modifications. Provides endpoints to browse, create, and share weapon configurations including attachments, tuning setups, tags, and build reviews.
-
-
-## Tech Stack
-
-| Layer     | Technology                                                 |
-|-----------|------------------------------------------------------------|
-| Language  | Java 21 (Amazon Corretto)                                  |
-| Framework | Spring Boot 3.x (Web, Security, Data JPA, Cache, Actuator) |
-| Build     | Gradle (Kotlin DSL)                                        |
-| Database  | PostgreSQL (Flyway migrations, JSONB columns)              |
-| Cache     | Redis (2-hour TTL)                                         |
-| Auth      | Custom JWT via httpOnly cookies + BCrypt                   |
-| API Docs  | springdoc-openapi (Swagger UI, dev profile only)           |
-| Container | Multi-stage Docker image (Amazon Corretto 21 → Alpine)     |
-| CI/CD     | GitHub Actions — builds on release publish                 |
-
-
-## Quick Start
-
-### Prerequisites
-
-- JDK 21 (Amazon Corretto recommended)
-- PostgreSQL
-- Redis
-
-### Configure
-
-Copy and customise the development config:
-
-```bash
-cp config/application-prod.yaml.example \
-   config/application-dev.yaml
-```
-
-Fill in your datasource and Redis connection details, then place the production config at `config/`, then enable it by environment variable `SPRING_PROFILES_ACTIVE`.
-
-### Build
-
-```bash
-# Compile (skip tests)
-./gradlew build -x test
-
-# Run all tests
-./gradlew test
-
-# Build executable JAR
-./gradlew bootJar
-```
-
-### Run
-
-```bash
-SPRING_PROFILES_ACTIVE=prod java -jar build/libs/delta-force-guide-server-$version.jar
-```
-
-Swagger UI is available at `http://localhost:8080/swagger-ui.html` when the `dev` profile is active.
-
-## Data Model
-
-- **Firearm** — weapon base stats (name, type, level, calibre, fire rate, armour/body damage, review)
-- **Modification** — a build attached to a firearm, with name, code, tags (JSONB), accessories including nested tuning objects (JSONB), author notes, and video links
-- **App User** — registered user (username, email) with hashed credentials via BCrypt
-
-Tags and accessories are stored as PostgreSQL JSONB columns using [Hypersistence Utils](https://github.com/vladmihalcea/hypersistence-utils), enabling flexible per-build metadata and filtering with the `@>` operator.
-
-
-## Architecture
-
-```
-Controller  →  Service  →  Manager  →  Repository / Mapper
-   (HTTP)      (logic)     (@Transactional)  (data access)
-```
-
-The call chain is strictly enforced — skipping layers is not permitted. All request/response objects are Java records with static `from()` factory methods for entity-to-DTO conversion.
-
-
-## Docker
-
-```bash
-# Build image
-docker pull registry.onixbyte.cn/onixbyte/delta-force-guide-server:latest
-
-# Run container
-docker run -p 8080:8080 \
-  -v /path/to/config:/app/config \
-  -e SPRING_PROFILES_ACTIVE=$your_active_profiles
-  delta-force-guide-server
-```
-
-Pre-built images are published to **Self-hosted GitLab Container Registry** (`registry.onixbyte.cn/onixbyte/delta-force-guide-server`) on every release.
-
-
-## CI/CD
-
-GitLab CI triggers on **tags**. The pipeline:
-
-1. Builds the boot JAR with the release tag as the version
-2. Uploads the JAR as a release asset
-3. Builds and pushes a multi-arch Docker image to GHCR tagged with both `:latest` and `:<version>`
-
-No tests are run in CI by design — tests are expected to pass locally before a release is cut.
-
-
-## Profiles
-
-| Profile | Purpose                                                               |
-|---------|-----------------------------------------------------------------------|
-| `dev`   | Enables Swagger UI, connects to dev DB/Redis at `dfguide.onixbyte.cn` |
-| default | Production mode, no Swagger, uses production datasource               |
-
-
-## Project Structure
-
-```
-src/main/java/com/onixbyte/deltaforceguide/
-├── client/          External service HTTP clients
-├── config/          Spring bean definitions (Security, CORS, Cache, Jackson, MyBatis)
-├── controller/      REST controllers
-├── domain/
-│   ├── converter/   JPA attribute converters
-│   ├── dto/         Request/response records
-│   └── entity/      JPA entities
-├── enumeration/     Enums (FirearmType)
-├── exception/       Custom BizException with HTTP status mapping
-├── filter/          TokenAuthenticationFilter (JWT through OncePerRequestFilter)
-├── manager/         @Transactional wrappers around repositories
-├── mapper/          MyBatis mapper interfaces (reserved for future use)
-├── properties/      @ConfigurationProperties records
-├── repository/      Spring Data JPA repositories
-├── security/
-│   ├── authentication/  Custom UsernamePasswordAuthentication
-│   └── provider/        UsernamePasswordAuthenticationProvider
-├── service/         Business logic
-├── shared/          Constants and utility classes
-└── utils/           General-purpose helpers
-```
-
-
-## Versioning
-
-The application exposes its version at `/versions` (GET).
-
-
-## Licence
-
-This project is licensed under the [MIT Licence](LICENCE). Copyright &copy; 2026 OnixByte.
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java b/server/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java
deleted file mode 100644
index a23fb88..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-/**
- * Entry point for the Delta Force Guide Server application.
- *
- * @author zihluwang
- */
-@SpringBootApplication
-public class DeltaForceGuideApplication {
-
-    public static void main(String[] args) {
-        SpringApplication.run(DeltaForceGuideApplication.class, args);
-    }
-
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java b/server/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java
deleted file mode 100644
index a7ad3f1..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java
+++ /dev/null
@@ -1,75 +0,0 @@
-package com.onixbyte.deltaforceguide.client;
-
-import com.auth0.jwt.JWT;
-import com.auth0.jwt.JWTVerifier;
-import com.auth0.jwt.algorithms.Algorithm;
-import com.auth0.jwt.interfaces.DecodedJWT;
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.properties.TokenProperties;
-import com.onixbyte.deltaforceguide.utils.DateTimeUtil;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
-import java.time.LocalDateTime;
-
-/**
- * Client for generating and verifying JSON Web Tokens using the Auth0 java-jwt library.
- *
- * @author zihluwang
- */
-@Component
-public class TokenClient {
-
-    private final Algorithm algorithm;
-    private final TokenProperties tokenProperties;
-    private final JWTVerifier verifier;
-
-    /**
-     * Constructs a new TokenClient with the necessary algorithm and token properties.
-     *
-     * @param algorithm       the signing algorithm used to secure the JWT
-     * @param tokenProperties the configuration properties for the token, such as issuer and
-     *                        validity period
-     */
-    @Autowired
-    public TokenClient(
-            Algorithm algorithm,
-            TokenProperties tokenProperties,
-            JWTVerifier verifier
-    ) {
-        this.algorithm = algorithm;
-        this.tokenProperties = tokenProperties;
-        this.verifier = verifier;
-    }
-
-    /**
-     * Generate a JSON Web Token to the current user.
-     *
-     * @param user the current user for whom the token is being generated
-     * @return a JWT string
-     */
-    public String generateToken(User user) {
-        var issuedAt = LocalDateTime.now();
-        var expiresAt = issuedAt.plus(tokenProperties.validTime());
-
-        return JWT.create()
-                .withSubject(user.getUsername())
-                .withIssuer(tokenProperties.issuer())
-                .withIssuedAt(DateTimeUtil.asInstant(issuedAt))
-                .withExpiresAt(DateTimeUtil.asInstant(expiresAt))
-                .sign(algorithm);
-    }
-
-    /**
-     * Verify and decode token.
-     *
-     * @param token a JWT token
-     * @return information included in the given token
-     * @throws com.auth0.jwt.exceptions.JWTVerificationException if the token is invalid, such as
-     *                                                           expired, or not signed by
-     *                                                           specific server
-     */
-    public DecodedJWT verifyToken(String token) {
-        return verifier.verify(token);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
deleted file mode 100644
index 6bba2db..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
+++ /dev/null
@@ -1,35 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.interceptor.GitHubWebhookInterceptor;
-import com.onixbyte.deltaforceguide.interceptor.TrafficInterceptor;
-import com.onixbyte.deltaforceguide.properties.AppProperties;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-
-@Configuration
-@EnableConfigurationProperties(AppProperties.class)
-public class AppConfig implements WebMvcConfigurer {
-
-    private final TrafficInterceptor trafficInterceptor;
-
-    private final GitHubWebhookInterceptor gitHubWebhookInterceptor;
-
-    @Autowired
-    public AppConfig(
-            TrafficInterceptor trafficInterceptor,
-            GitHubWebhookInterceptor gitHubWebhookInterceptor
-    ) {
-        this.trafficInterceptor = trafficInterceptor;
-        this.gitHubWebhookInterceptor = gitHubWebhookInterceptor;
-    }
-
-    @Override
-    public void addInterceptors(InterceptorRegistry registry) {
-        registry.addInterceptor(trafficInterceptor);
-        registry.addInterceptor(gitHubWebhookInterceptor)
-                .addPathPatterns("/webhooks/github");
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
deleted file mode 100644
index 0502c4a..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.shared.JacksonRedisSerialiser;
-import org.springframework.cache.annotation.EnableCaching;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.data.redis.cache.RedisCacheConfiguration;
-import org.springframework.data.redis.cache.RedisCacheManager;
-import org.springframework.data.redis.connection.RedisConnectionFactory;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
-import org.springframework.data.redis.serializer.RedisSerializationContext;
-import org.springframework.data.redis.serializer.RedisSerializer;
-
-import java.time.Duration;
-
-/**
- * Configuration class for Redis-based caching components.
- * <p>
- * This configuration class provides beans for Redis cache management and template operations
- * within the Helix application. It configures custom serialisation strategies using
- * {@link GenericJackson2JsonRedisSerializer} for values and string serialisation for keys,
- * ensuring optimal performance and compatibility with JSON-based data structures.
- * <p>
- * The configuration includes:
- * <ul>
- *   <li>Custom {@link RedisCacheManager} with JSON serialisation support</li>
- *   <li>Configured {@link RedisTemplate} for direct Redis operations</li>
- * </ul>
- *
- * @author zihluwang
- * @see RedisCacheManager
- * @see RedisTemplate
- * @see GenericJackson2JsonRedisSerializer
- * @since 1.0.0
- */
-@Configuration
-@EnableCaching
-public class CacheConfig {
-
-    /**
-     * Creates a custom Redis cache manager with JSON serialisation support.
-     * <p>
-     * This method configures a {@link RedisCacheManager} that uses string serialisation for cache
-     * keys and {@link GenericJackson2JsonRedisSerializer} for cache values. This setup ensures that
-     * complex objects can be stored and retrieved from Redis cache whilst maintaining readability
-     * and compatibility with JSON-based systems.
-     *
-     * @param connectionFactory the Redis connection factory used to establish connections
-     * @return a configured {@link RedisCacheManager} with custom serialisation settings
-     * @see RedisCacheManager
-     * @see GenericJackson2JsonRedisSerializer
-     * @see RedisSerializationContext
-     */
-    @Bean
-    public RedisCacheManager cacheManager(
-            RedisConnectionFactory connectionFactory
-    ) {
-        var _keySerializer = RedisSerializer.string();
-
-        var cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
-                .serializeKeysWith(RedisSerializationContext.SerializationPair
-                        .fromSerializer(_keySerializer))
-                .serializeValuesWith(RedisSerializationContext.SerializationPair
-                        .fromSerializer(JacksonRedisSerialiser.INSTANCE))
-                .entryTtl(Duration.ofMinutes(90L));
-
-        return RedisCacheManager.RedisCacheManagerBuilder
-                .fromConnectionFactory(connectionFactory)
-                .cacheDefaults(cacheConfiguration)
-                .build();
-    }
-
-    /**
-     * Creates a Redis template for direct Redis operations with custom serialisation.
-     * <p>
-     * This method configures a {@link RedisTemplate} that uses string serialisation for keys
-     * and {@link GenericJackson2JsonRedisSerializer} for values. This template provides low-level
-     * access to Redis operations whilst ensuring consistent serialisation strategies across
-     * the application.
-     * <p>
-     * The template is fully configured and ready for use after bean creation.
-     *
-     * @param connectionFactory the Redis connection factory used to establish connections
-     * @return a fully configured {@link RedisTemplate} for Redis operations
-     * @see RedisTemplate
-     * @see GenericJackson2JsonRedisSerializer
-     * @see RedisSerializer
-     */
-    @Bean
-    public RedisTemplate<String, Object> redisTemplate(
-            RedisConnectionFactory connectionFactory
-    ) {
-        var redisTemplate = new RedisTemplate<String, Object>();
-        redisTemplate.setConnectionFactory(connectionFactory);
-        redisTemplate.setKeySerializer(RedisSerializer.string());
-        redisTemplate.setValueSerializer(JacksonRedisSerialiser.INSTANCE);
-        redisTemplate.afterPropertiesSet();
-        return redisTemplate;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
deleted file mode 100644
index 1e13243..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
+++ /dev/null
@@ -1,49 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.properties.CorsProperties;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.http.HttpMethod;
-import org.springframework.web.cors.CorsConfiguration;
-import org.springframework.web.cors.CorsConfigurationSource;
-import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
-
-import java.util.List;
-import java.util.stream.Stream;
-
-/**
- * Configuration for CORS (Cross-Origin Resource Sharing) policies.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableConfigurationProperties({CorsProperties.class})
-public class CorsConfig {
-
-    /**
-     * Creates the CORS configuration source with properties from configuration.
-     *
-     * @param properties the CORS configuration properties
-     * @return the CORS configuration source
-     */
-    @Bean
-    public CorsConfigurationSource corsConfigurationSource(
-            CorsProperties properties
-    ) {
-        var corsConfiguration = new CorsConfiguration();
-        corsConfiguration.setAllowCredentials(properties.allowCredentials());
-        corsConfiguration.setAllowedOrigins(List.of(properties.allowedOrigins()));
-        corsConfiguration.setAllowedHeaders(List.of(properties.allowedHeaders()));
-        corsConfiguration.setAllowedMethods(Stream.of(properties.allowedMethods())
-                .map(HttpMethod::name)
-                .toList());
-        corsConfiguration.setMaxAge(properties.maxAge());
-        corsConfiguration.setAllowPrivateNetwork(properties.allowPrivateNetwork());
-        corsConfiguration.setExposedHeaders(List.of(properties.exposedHeaders()));
-
-        var corsConfigurationSource = new UrlBasedCorsConfigurationSource();
-        corsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
-        return corsConfigurationSource;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java
deleted file mode 100644
index 893852a..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.filter.WebhookFilter;
-import org.springframework.boot.web.servlet.FilterRegistrationBean;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-public class FilterConfig {
-
-    @Bean
-    public FilterRegistrationBean<WebhookFilter> webhookFilterBean(WebhookFilter webhookFilter) {
-        var registrationBean = new FilterRegistrationBean<WebhookFilter>();
-
-        registrationBean.setFilter(webhookFilter);
-        registrationBean.addUrlPatterns("/webhooks/*");
-        registrationBean.setOrder(1);
-
-        return registrationBean;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
deleted file mode 100644
index 895bcd1..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.onixbyte.deltaforceguide.shared.JacksonModules;
-import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * Configuration for Jackson JSON serialisation and deserialisation settings.
- *
- * @author zihluwang
- */
-@Configuration
-public class JacksonConfig {
-
-    @Bean
-    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomiser() {
-        return (builder) -> {
-            builder.modules(JacksonModules.DATE_TIME_MODULE);
-            builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        };
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
deleted file mode 100644
index 0e2ae74..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import org.mybatis.spring.annotation.MapperScan;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * Configuration for MyBatis SQL mapping framework integration.
- *
- * @author zihluwang
- */
-@Configuration
-@MapperScan(basePackages = {"com.onixbyte.deltaforceguide.mapper"})
-public class MyBatisConfig {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java
deleted file mode 100644
index 9f47fe1..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import io.swagger.v3.oas.annotations.OpenAPIDefinition;
-import io.swagger.v3.oas.annotations.info.Contact;
-import io.swagger.v3.oas.annotations.info.Info;
-import io.swagger.v3.oas.annotations.info.License;
-import org.springframework.context.annotation.Configuration;
-
-@OpenAPIDefinition(
-        info = @Info(
-                title = "Delta Force Guide Server",
-                description = "API for managing Delta Force game firearm builds",
-                version = "1.3.4",
-                contact = @Contact(
-                        name = "Zihlu Wang",
-                        email = "zihlu.wang@onixbyte.com"
-                ),
-                license = @License(
-                        name = "MIT",
-                        url = "https://git.onixbyte.cn/onixbyte/delta-force-guide-server/-/raw/main/LICENCE"
-                )
-        )
-)
-@Configuration
-public class OpenApiConfiguration {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java
deleted file mode 100644
index b32a691..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java
+++ /dev/null
@@ -1,96 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.auth0.jwt.JWT;
-import com.auth0.jwt.JWTVerifier;
-import com.auth0.jwt.algorithms.Algorithm;
-import com.onixbyte.deltaforceguide.filter.TokenAuthenticationFilter;
-import com.onixbyte.deltaforceguide.properties.CookieProperties;
-import com.onixbyte.deltaforceguide.properties.TokenProperties;
-import com.onixbyte.deltaforceguide.security.provider.UsernamePasswordAuthenticationProvider;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.security.authentication.ProviderManager;
-import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
-import org.springframework.security.config.http.SessionCreationPolicy;
-import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.security.web.SecurityFilterChain;
-import org.springframework.security.web.access.ExceptionTranslationFilter;
-import org.springframework.web.cors.CorsConfigurationSource;
-
-/**
- * Spring Security configuration defining authentication, authorisation, and filter chains.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableWebSecurity
-@EnableMethodSecurity
-@EnableConfigurationProperties({TokenProperties.class, CookieProperties.class})
-public class SecurityConfig {
-
-    /**
-     * Configures the HTTP security filter chain including endpoint authorisation and JWT filter.
-     *
-     * @param http the HTTP security builder
-     * @return the configured security filter chain
-     */
-    @Bean
-    public SecurityFilterChain securityFilterChain(
-            HttpSecurity httpSecurity,
-            CorsConfigurationSource corsConfigurationSource,
-            TokenAuthenticationFilter tokenAuthenticationFilter
-    ) throws Exception {
-        return httpSecurity
-                .cors((cors) -> cors
-                        .configurationSource(corsConfigurationSource))
-                .csrf(AbstractHttpConfigurer::disable)
-                .sessionManagement((customiser) -> customiser
-                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
-                .authorizeHttpRequests((customiser) -> customiser
-                        .anyRequest().permitAll()
-                )
-                .addFilterAfter(tokenAuthenticationFilter, ExceptionTranslationFilter.class)
-                .build();
-    }
-
-    /**
-     * Provides the BCrypt password encoder for credential hashing.
-     * @return the BCrypt password encoder
-     */
-    @Bean
-    public PasswordEncoder passwordEncoder() {
-        return new BCryptPasswordEncoder();
-    }
-
-    /**
-     * Provides the authentication manager for the security configuration.
-     *
-     * @return the authentication manager
-     */
-    @Bean
-    public AuthenticationManager authenticationManager(
-            UsernamePasswordAuthenticationProvider usernamePasswordAuthenticationProvider
-    ) {
-        return new ProviderManager(
-                usernamePasswordAuthenticationProvider
-        );
-    }
-
-    @Bean
-    public Algorithm algorithm(TokenProperties properties) {
-        return Algorithm.HMAC256(properties.secret());
-    }
-
-    @Bean
-    public JWTVerifier verifier(Algorithm algorithm, TokenProperties tokenProperties) {
-        return JWT.require(algorithm)
-                .withIssuer(tokenProperties.issuer())
-                .build();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
deleted file mode 100644
index 1dfe3ff..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import org.springframework.context.annotation.Configuration;
-import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
-
-/**
- * Configuration for Spring Data JPA auditing and repository settings.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableJpaRepositories(basePackages = {"com.onixbyte.deltaforceguide.repository"})
-public class SpringDataConfig {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java b/server/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java
deleted file mode 100644
index d9c5db7..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.properties.GitHubWebhookProperties;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-@EnableConfigurationProperties({GitHubWebhookProperties.class})
-public class WebhookConfig {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java
deleted file mode 100644
index db0f42e..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.LoginRequest;
-import com.onixbyte.deltaforceguide.domain.dto.UserResponse;
-import com.onixbyte.deltaforceguide.client.TokenClient;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.AuthService;
-import com.onixbyte.deltaforceguide.service.CookieService;
-import com.onixbyte.deltaforceguide.shared.CookieName;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.ResponseEntity;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.time.Duration;
-import java.time.LocalDateTime;
-
-/**
- * REST controller for user authentication endpoints (login, logout).
- *
- * @author zihluwang
- */
-@Tag(name = "用户鉴权", description = "处理用户登录与退出功能")
-@RestController
-@RequestMapping("/auth")
-public class AuthController {
-
-    private final AuthService authService;
-    private final TokenClient tokenClient;
-    private final CookieService cookieService;
-
-    public AuthController(AuthService authService, TokenClient tokenClient, CookieService cookieService) {
-        this.authService = authService;
-        this.tokenClient = tokenClient;
-        this.cookieService = cookieService;
-    }
-
-    @Operation(description = "用户登录")
-    @PostMapping("/login")
-    public ResponseEntity<UserResponse> login(@Validated @RequestBody LoginRequest request) {
-        var user = authService.login(request);
-        var currentTime = LocalDateTime.now();
-        var accessToken = tokenClient.generateToken(user);
-        var accessTokenCookie = cookieService.buildCookie(CookieName.ACCESS_TOKEN, accessToken);
-        var cookieMaxAge = accessTokenCookie.getMaxAge();
-
-        return ResponseEntity.ok()
-                .header(HttpHeaders.SET_COOKIE, accessTokenCookie.toString())
-                .body(UserResponse.from(user, currentTime.plus(cookieMaxAge)));
-    }
-
-    @RequiresAuth
-    @Operation(description = "退出登录")
-    @PostMapping("/logout")
-    public ResponseEntity<Void> logout() {
-        var expiredCookie = cookieService.buildCookie(CookieName.ACCESS_TOKEN, "", Duration.ZERO);
-        return ResponseEntity.noContent()
-                .header(HttpHeaders.SET_COOKIE, expiredCookie.toString())
-                .build();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java
deleted file mode 100644
index 527e730..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.service.DailyPasswordService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-/**
- * REST controller for retrieving daily-generated passwords.
- *
- * @author zihluwang
- */
-@Tag(name = "每日密码", description = "获取每日密码信息")
-@RestController
-@RequestMapping("/daily-passwords")
-public class DailyPasswordController {
-
-    private final DailyPasswordService dailyPasswordService;
-
-    public DailyPasswordController(DailyPasswordService dailyPasswordService) {
-        this.dailyPasswordService = dailyPasswordService;
-    }
-
-    @Operation(description = "获取当日的每日密码数据，该数据将被缓存一天")
-    @GetMapping
-    public DailyPasswordResponse getDailyPassword() {
-        return dailyPasswordService.getDailyPassword();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java
deleted file mode 100644
index 4843c2d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java
+++ /dev/null
@@ -1,72 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.FirearmRequest;
-import com.onixbyte.deltaforceguide.domain.dto.FirearmResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.FirearmService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.validation.constraints.Max;
-import jakarta.validation.constraints.Min;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Sort;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.*;
-
-/**
- * REST controller for firearm CRUD operations.
- *
- * @author zihluwang
- */
-@Tag(name = "武器管理", description = "与武器有关的操作")
-@RestController
-@RequestMapping("/firearms")
-public class FirearmController {
-
-    private final FirearmService firearmService;
-
-    public FirearmController(FirearmService firearmService) {
-        this.firearmService = firearmService;
-    }
-
-    @Operation(description = "获取分页武器数据")
-    @Validated
-    @GetMapping
-    public PageResponse<FirearmResponse> pageQuery(
-            @RequestParam(defaultValue = "0") @Min(0) int page,
-            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
-            @RequestParam(defaultValue = "id") String sortBy,
-            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
-            @RequestParam(required = false) FirearmType type
-    ) {
-        return firearmService.pageQuery(type, PageRequest.of(page, size, Sort.by(direction, sortBy)));
-    }
-
-    @Operation(description = "获取指定武器的数据")
-    @GetMapping("/{id}")
-    public FirearmResponse queryById(@PathVariable Long id) {
-        return firearmService.queryById(id);
-    }
-
-    @RequiresAuth
-    @PostMapping
-    public FirearmResponse addFirearm(@Validated @RequestBody FirearmRequest request) {
-        return firearmService.addFirearm(request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "更新指定武器的数据")
-    @PutMapping("/{id}")
-    public FirearmResponse updateFirearm(@PathVariable Long id, @Validated @RequestBody FirearmRequest request) {
-        return firearmService.updateFirearm(id, request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "删除指定武器的数据")
-    @DeleteMapping("/{id}")
-    public void deleteFirearm(@PathVariable Long id) {
-        firearmService.deleteFirearm(id);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
deleted file mode 100644
index 580e1f9..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.GitHubIssueRequest;
-import com.onixbyte.deltaforceguide.service.WebhookService;
-import com.onixbyte.deltaforceguide.shared.GitHubWebhookHeader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-@RequestMapping("/webhooks/github")
-public class GitHubWebhookController {
-
-    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookController.class);
-
-    private final WebhookService webhookService;
-
-    public GitHubWebhookController(WebhookService webhookService) {
-        this.webhookService = webhookService;
-    }
-
-    @PostMapping
-    public ResponseEntity<Void> handleWebhook(
-            @RequestHeader(GitHubWebhookHeader.EVENT) String event,
-            @RequestBody GitHubIssueRequest request
-    ) {
-        if (!"issues".equals(event)) {
-            log.debug("Ignoring non-issue event: {}", event);
-            return ResponseEntity.ok().build();
-        }
-        if (!"opened".equals(request.action())) {
-            log.debug("Ignoring issue action: {}", request.action());
-            return ResponseEntity.ok().build();
-        }
-        webhookService.processIssueEvent(request);
-        return ResponseEntity.ok().build();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java
deleted file mode 100644
index 4edd154..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.ErrorResponse;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.ExceptionHandler;
-import org.springframework.web.bind.annotation.RestControllerAdvice;
-
-/**
- * Global exception handler that translates exceptions into standard error responses.
- *
- * @author zihluwang
- */
-@RestControllerAdvice
-public class GlobalExceptionHandler {
-
-    @ExceptionHandler(BizException.class)
-    public ResponseEntity<ErrorResponse> handleBizException(BizException exception) {
-        var status = exception.getStatus();
-        return ResponseEntity.status(status)
-                .body(new ErrorResponse(exception.getMessage()));
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java
deleted file mode 100644
index 7eaf94c..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.ModificationBatchCreateRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.ModificationService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.Max;
-import jakarta.validation.constraints.Min;
-import jakarta.validation.constraints.Positive;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Sort;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.PutMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.List;
-
-/**
- * REST controller for modification CRUD operations, including batch creation and deletion.
- *
- * @author zihluwang
- */
-@Tag(name = "改装管理", description = "对枪械改装的管理")
-@RestController
-@RequestMapping("/modifications")
-public class ModificationController {
-
-    private final ModificationService modificationService;
-
-    public ModificationController(ModificationService modificationService) {
-        this.modificationService = modificationService;
-    }
-
-    @Operation(description = "分页查询改装信息")
-    @Validated
-    @GetMapping
-    public PageResponse<ModificationResponse> pageQuery(
-            @RequestParam(defaultValue = "0") @Min(0) int page,
-            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
-            @RequestParam(required = false) @Positive Long firearmId,
-            @RequestParam(defaultValue = "id") String sortBy,
-            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
-            @RequestParam(required = false) List<String> tags
-    ) {
-        return modificationService.pageQuery(firearmId, tags, PageRequest.of(page, size, Sort.by(direction, sortBy)));
-    }
-
-    @Operation(description = "查询指定改装的信息")
-    @GetMapping("/{id}")
-    public ModificationResponse queryById(@PathVariable Long id) {
-        return modificationService.queryById(id);
-    }
-
-    @RequiresAuth
-    @Operation(description = "创建改装")
-    @PostMapping
-    public ModificationResponse create(@Valid @RequestBody ModificationRequest request) {
-        return modificationService.create(request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "批量创建改装")
-    @PostMapping("/batch")
-    public List<ModificationResponse> batchCreate(@Valid @RequestBody ModificationBatchCreateRequest request) {
-        return modificationService.batchCreate(request.modifications());
-    }
-
-    @RequiresAuth
-    @Operation(description = "修改指定改装")
-    @PutMapping("/{id}")
-    public ModificationResponse update(@PathVariable Long id, @Valid @RequestBody ModificationRequest request) {
-        return modificationService.update(id, request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "删除指定改装")
-    @DeleteMapping("/{id}")
-    public void delete(@PathVariable Long id) {
-        modificationService.delete(id);
-    }
-
-    @RequiresAuth
-    @Operation(description = "批量删除改装")
-    @DeleteMapping("/batch-delete")
-    @Validated
-    public void batchDelete(@RequestParam List<@Positive Long> ids) {
-        modificationService.batchDelete(ids);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java
deleted file mode 100644
index b9f4e59..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-import com.onixbyte.deltaforceguide.service.ModificationService;
-
-import java.util.List;
-
-/**
- * REST controller for retrieving available modification tags.
- *
- * @author zihluwang
- */
-@Tag(name = "标签管理", description = "管理标签信息")
-@RestController
-@RequestMapping("/tags")
-public class TagController {
-
-    private final ModificationService modificationService;
-
-    public TagController(ModificationService modificationService) {
-        this.modificationService = modificationService;
-    }
-
-    @Operation(description = "查询指定武器或所有武器的标签")
-    @GetMapping
-    public List<String> getTags(@RequestParam(required = false) Long firearmId) {
-        return modificationService.findAllTags(firearmId);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java b/server/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java
deleted file mode 100644
index 67a08ef..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.service.AppService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@Tag(name = "版本信息")
-@RestController
-@RequestMapping("/versions")
-public class VersionController {
-
-    private final AppService appService;
-
-    public VersionController(AppService appService) {
-        this.appService = appService;
-    }
-
-    @Operation(description = "获取当前应用版本号")
-    @GetMapping
-    public String getVersion() {
-        return appService.getVersion();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java
deleted file mode 100644
index 8108db3..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.converter;
-
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import jakarta.persistence.AttributeConverter;
-import jakarta.persistence.Converter;
-
-/**
- * JPA attribute converter that maps {@link FirearmType} enum to/from its integer database representation.
- *
- * @author zihluwang
- */
-@Converter
-public class FirearmTypeConverter implements AttributeConverter<FirearmType, Integer> {
-
-    @Override
-    public Integer convertToDatabaseColumn(FirearmType attribute) {
-        return attribute == null ? null : attribute.getCode();
-    }
-
-    @Override
-    public FirearmType convertToEntityAttribute(Integer dbData) {
-        return FirearmType.fromCode(dbData);
-    }
-}
-
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java
deleted file mode 100644
index b94b61c..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotBlank;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Request DTO for creating or updating an accessory attached to a modification.
- *
- * @author zihluwang
- */
-public record AccessoryRequest(
-        @NotBlank(message = "插槽名称不能为空")
-        String slotName,
-        @NotBlank(message = "配件名称不能为空")
-        String accessoryName,
-        List<@Valid TuningRequest> tunings
-) {
-    public List<TuningRequest> tunings() {
-        return tunings == null ? new ArrayList<>() : tunings;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java
deleted file mode 100644
index ade3eac..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-
-import java.util.List;
-
-/**
- * Response DTO for an accessory attached to a modification.
- *
- * @author zihluwang
- */
-public record AccessoryResponse(
-        String slotName,
-        String accessoryName,
-        List<TuningResponse> tunings
-) {
-    public static AccessoryResponse from(Accessory accessory) {
-        return new AccessoryResponse(
-                accessory.getSlotName(),
-                accessory.getAccessoryName(),
-                accessory.getTunings() == null
-                        ? List.of()
-                        : accessory.getTunings().stream().map(TuningResponse::from).toList()
-        );
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java
deleted file mode 100644
index edfa9c0..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * DTO representing a single daily-generated password for a map.
- *
- * @author zihluwang
- */
-public record DailyPassword(
-        String mapName,
-        String password
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java
deleted file mode 100644
index 5e3c12f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import java.time.LocalDateTime;
-import java.util.List;
-
-/**
- * DTO containing daily password data including update information and password list.
- *
- * @author zihluwang
- */
-public record DailyPasswordData(
-        String updateDate,
-        Integer totalCount,
-        List<DailyPassword> passwords,
-        String source,
-        LocalDateTime lastUpdated,
-        Long timestamp
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java
deleted file mode 100644
index 9af994f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * DTO holding metadata about the daily password source and update tracking.
- *
- * @author zihluwang
- */
-public record DailyPasswordMetadata(
-        String version,
-        String author
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java
deleted file mode 100644
index d3ce808..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * Response DTO wrapping daily password data with metadata.
- *
- * @author zihluwang
- */
-public record DailyPasswordResponse(
-        String status,
-        String message,
-        DailyPasswordData data,
-        DailyPasswordMetadata metadata
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java
deleted file mode 100644
index 11879fc..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * Standard error response body returned on API failures.
- *
- * @author zihluwang
- */
-public record ErrorResponse(
-        String message
-) {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java
deleted file mode 100644
index 02fb855..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-
-/**
- * Request DTO for creating or updating a firearm.
- *
- * @author zihluwang
- */
-public record FirearmRequest(
-        String name,
-        FirearmType type,
-        String level,
-        String calibre,
-        Integer fireRate,
-        Integer armourDamage,
-        Integer bodyDamage,
-        String review
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java
deleted file mode 100644
index 0e9eaba..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-
-/**
- * Response DTO for a firearm record, including associated modifications.
- *
- * @author zihluwang
- */
-public record FirearmResponse(
-        Long id,
-        String name,
-        FirearmType type,
-        String level,
-        String calibre,
-        Integer fireRate,
-        Integer armourDamage,
-        Integer bodyDamage,
-        String review
-) {
-    public static FirearmResponse from(Firearm firearm) {
-        return new FirearmResponse(
-                firearm.getId(),
-                firearm.getName(),
-                firearm.getType(),
-                firearm.getLevel(),
-                firearm.getCalibre(),
-                firearm.getFireRate(),
-                firearm.getArmourDamage(),
-                firearm.getBodyDamage(),
-                firearm.getReview()
-        );
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java
deleted file mode 100644
index 8c4e1a6..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubIssueRequest(
-        String action,
-        GitHubWebhookIssue issue,
-        GitHubWebhookRepository repository,
-        GitHubWebhookSender sender
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java
deleted file mode 100644
index 91263cc..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-import java.util.List;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookIssue(
-        String url,
-        Long id,
-        Long number,
-        String title,
-        String body,
-        List<GitHubWebhookLabel> labels
-) {
-
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java
deleted file mode 100644
index 33954ab..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookLabel(
-        String name
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java
deleted file mode 100644
index e3858d6..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookRepository(
-        String fullName
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java
deleted file mode 100644
index 416891e..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookSender(
-        String login
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java
deleted file mode 100644
index 106d533..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.NotBlank;
-
-/**
- * Login request containing principle (username/email) and credential (password).
- *
- * @author zihluwang
- */
-@Schema(description = "登录请求")
-public record LoginRequest(
-        @NotBlank(message = "登录名称不能为空")
-        @Schema(description = "用户名或电子邮箱", requiredMode = Schema.RequiredMode.REQUIRED)
-        String principle,
-        @NotBlank(message = "登录口令不能为空")
-        @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED)
-        String credential
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java
deleted file mode 100644
index c0aa59f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotEmpty;
-
-import java.util.List;
-
-/**
- * Request DTO for batch creation of modifications.
- *
- * @author zihluwang
- */
-public record ModificationBatchCreateRequest(
-        @NotEmpty(message = "批量创建列表不能为空")
-        List<@Valid ModificationRequest> modifications
-) {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java
deleted file mode 100644
index 4243895..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.constraints.NotEmpty;
-import jakarta.validation.constraints.Positive;
-
-import java.util.List;
-
-/**
- * Request DTO for batch deletion of modifications by ID.
- *
- * @author zihluwang
- */
-public record ModificationBatchDeleteRequest(
-        @NotEmpty(message = "批量删除ID列表不能为空")
-        List<@Positive(message = "ID必须为正数") Long> ids
-) {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java
deleted file mode 100644
index e4f6708..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-import jakarta.validation.constraints.Positive;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Request DTO for creating or updating a modification.
- *
- * @author zihluwang
- */
-public record ModificationRequest(
-        @NotNull(message = "武器ID不能为空")
-        @Positive(message = "武器ID必须为正数")
-        Long firearmId,
-        @NotBlank(message = "改装名称不能为空")
-        String name,
-        @NotBlank(message = "改装代码不能为空")
-        String code,
-        List<@NotBlank(message = "标签不能为空") String> tags,
-        List<@Valid AccessoryRequest> accessories,
-        String note,
-        String author,
-        String videoUrl
-) {
-    public List<String> tags() {
-        return tags == null ? new ArrayList<>() : tags;
-    }
-
-    public List<AccessoryRequest> accessories() {
-        return accessories == null ? new ArrayList<>() : accessories;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java
deleted file mode 100644
index aca6ef5..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-
-import java.util.List;
-
-/**
- * Response DTO for a modification record including accessories and tags.
- *
- * @author zihluwang
- */
-public record ModificationResponse(
-        Long id,
-        Long firearmId,
-        String name,
-        String code,
-        List<String> tags,
-        List<AccessoryResponse> accessories,
-        String note,
-        String author,
-        String videoUrl
-) {
-    public static ModificationResponse from(Modification modification) {
-        return new ModificationResponse(
-                modification.getId(),
-                modification.getFirearm().getId(),
-                modification.getName(),
-                modification.getCode(),
-                modification.getTags(),
-                modification.getAccessories() == null
-                        ? List.of()
-                        : modification.getAccessories().stream().map(AccessoryResponse::from).toList(),
-                modification.getNote(),
-                modification.getAuthor(),
-                modification.getVideoUrl()
-        );
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java
deleted file mode 100644
index 20738bd..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import org.springframework.data.domain.Page;
-
-import java.util.List;
-
-/**
- * Generic paginated response wrapper for list endpoints.
- *
- * @author zihluwang
- */
-public record PageResponse<T>(
-        List<T> items,
-        int page,
-        int size,
-        long totalElements,
-        int totalPages
-) {
-    public static <T> PageResponse<T> from(Page<T> source) {
-        return new PageResponse<>(
-                source.getContent(),
-                source.getNumber(),
-                source.getSize(),
-                source.getTotalElements(),
-                source.getTotalPages()
-        );
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java
deleted file mode 100644
index a180eb3..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-
-/**
- * Request DTO for a tuning adjustment on an accessory.
- *
- * @author zihluwang
- */
-public record TuningRequest(
-        @NotBlank(message = "调校项名称不能为空")
-        String tuningName,
-        @NotNull(message = "调校值不能为空")
-        Double tuningValue
-) {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java
deleted file mode 100644
index 405ecde..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-
-/**
- * Response DTO for a tuning adjustment on an accessory.
- *
- * @author zihluwang
- */
-public record TuningResponse(
-        String tuningName,
-        Double tuningValue
-) {
-    public static TuningResponse from(Tuning tuning) {
-        return new TuningResponse(
-                tuning.getTuningName(),
-                tuning.getTuningValue()
-        );
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java
deleted file mode 100644
index 4a2d82d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-
-import java.time.LocalDateTime;
-
-/**
- * Response DTO for a user account, including associated credentials.
- *
- * @author zihluwang
- */
-public record UserResponse(
-        Long id,
-        String username,
-        String email,
-        LocalDateTime expiration
-) {
-    public static UserResponse from(User user, LocalDateTime expiration) {
-        return new UserResponse(
-                user.getId(),
-                user.getUsername(),
-                user.getEmail(),
-                expiration
-        );
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
deleted file mode 100644
index cde914d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
+++ /dev/null
@@ -1,72 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Objects;
-
-/**
- * Entity representing an accessory attached to a modification, stored as JSONB.
- *
- * @author zihluwang
- */
-public class Accessory {
-
-    private String slotName;
-
-    private String accessoryName;
-
-    private List<Tuning> tunings = new ArrayList<>();
-
-    public Accessory() {
-    }
-
-    public String getSlotName() {
-        return slotName;
-    }
-
-    public void setSlotName(String slotName) {
-        this.slotName = slotName;
-    }
-
-    public String getAccessoryName() {
-        return accessoryName;
-    }
-
-    public void setAccessoryName(String accessoryName) {
-        this.accessoryName = accessoryName;
-    }
-
-    public List<Tuning> getTunings() {
-        return tunings;
-    }
-
-    public void setTunings(List<Tuning> tunings) {
-        this.tunings = tunings;
-    }
-
-    public void addTuning(Tuning tuning) {
-        this.tunings.add(tuning);
-    }
-
-    public void removeTuning(Tuning tuning) {
-        this.tunings.remove(tuning);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (!(o instanceof Accessory accessory)) {
-            return false;
-        }
-        return Objects.equals(slotName, accessory.slotName)
-                && Objects.equals(accessoryName, accessory.accessoryName)
-                && Objects.equals(tunings, accessory.tunings);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(slotName, accessoryName, tunings);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java
deleted file mode 100644
index c71cee7..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java
+++ /dev/null
@@ -1,232 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import com.onixbyte.deltaforceguide.domain.converter.FirearmTypeConverter;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import jakarta.persistence.CascadeType;
-import jakarta.persistence.Column;
-import jakarta.persistence.Convert;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-import jakarta.persistence.OneToMany;
-import jakarta.persistence.Table;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing a firearm in the Delta Force game.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "firearm")
-public class Firearm {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @Column(name = "name", nullable = false, length = 64)
-    private String name;
-
-    @Column(name = "type", nullable = false)
-    @Convert(converter = FirearmTypeConverter.class)
-    private FirearmType type;
-
-    @Column(name = "level", nullable = false)
-    private String level;
-
-    @Column(name = "review", columnDefinition = "TEXT")
-    private String review;
-
-    @Column(name = "calibre")
-    private String calibre;
-
-    @Column(name = "fire_rate")
-    private Integer fireRate;
-
-    @Column(name = "armour_damage")
-    private Integer armourDamage;
-
-    @Column(name = "body_damage")
-    private Integer bodyDamage;
-
-    @OneToMany(mappedBy = "firearm", cascade = CascadeType.ALL, orphanRemoval = true)
-    private List<Modification> modifications = new ArrayList<>();
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public FirearmType getType() {
-        return type;
-    }
-
-    public void setType(FirearmType type) {
-        this.type = type;
-    }
-
-    public String getLevel() {
-        return level;
-    }
-
-    public void setLevel(String level) {
-        this.level = level;
-    }
-
-    public String getReview() {
-        return review;
-    }
-
-    public void setReview(String review) {
-        this.review = review;
-    }
-
-    public String getCalibre() {
-        return calibre;
-    }
-
-    public void setCalibre(String calibre) {
-        this.calibre = calibre;
-    }
-
-    public Integer getFireRate() {
-        return fireRate;
-    }
-
-    public void setFireRate(Integer fireRate) {
-        this.fireRate = fireRate;
-    }
-
-    public Integer getArmourDamage() {
-        return armourDamage;
-    }
-
-    public void setArmourDamage(Integer armourDamage) {
-        this.armourDamage = armourDamage;
-    }
-
-    public Integer getBodyDamage() {
-        return bodyDamage;
-    }
-
-    public void setBodyDamage(Integer bodyDamage) {
-        this.bodyDamage = bodyDamage;
-    }
-
-    public List<Modification> getModifications() {
-        return modifications;
-    }
-
-    public void setModifications(List<Modification> modifications) {
-        this.modifications = modifications;
-    }
-
-    public void addModification(Modification modification) {
-        this.modifications.add(modification);
-        modification.setFirearm(this);
-    }
-
-    public void removeModification(Modification modification) {
-        this.modifications.remove(modification);
-        modification.setFirearm(null);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private String name;
-        private FirearmType type;
-        private String level;
-        private String review;
-        private String calibre;
-        private Integer fireRate;
-        private Integer armourDamage;
-        private Integer bodyDamage;
-        private List<Modification> modifications;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder name(String name) {
-            this.name = name;
-            return this;
-        }
-
-        public Builder type(FirearmType type) {
-            this.type = type;
-            return this;
-        }
-
-        public Builder level(String level) {
-            this.level = level;
-            return this;
-        }
-
-        public Builder review(String review) {
-            this.review = review;
-            return this;
-        }
-
-        public Builder calibre(String calibre) {
-            this.calibre = calibre;
-            return this;
-        }
-
-        public Builder fireRate(Integer fireRate) {
-            this.fireRate = fireRate;
-            return this;
-        }
-
-        public Builder armourDamage(Integer armourDamage) {
-            this.armourDamage = armourDamage;
-            return this;
-        }
-
-        public Builder bodyDamage(Integer bodyDamage) {
-            this.bodyDamage = bodyDamage;
-            return this;
-        }
-
-        public Builder modifications(List<Modification> modifications) {
-            this.modifications = modifications;
-            return this;
-        }
-
-        public Firearm build() {
-            Firearm firearm = new Firearm();
-            firearm.id = this.id;
-            firearm.name = this.name;
-            firearm.type = this.type;
-            firearm.level = this.level;
-            firearm.review = this.review;
-            firearm.calibre = this.calibre;
-            firearm.fireRate = this.fireRate;
-            firearm.armourDamage = this.armourDamage;
-            firearm.bodyDamage = this.bodyDamage;
-            firearm.modifications = this.modifications == null ? new ArrayList<>() : this.modifications;
-            return firearm;
-        }
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
deleted file mode 100644
index a1942f7..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
+++ /dev/null
@@ -1,211 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import io.hypersistence.utils.hibernate.type.json.JsonType;
-import jakarta.persistence.*;
-import org.hibernate.annotations.Type;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing a firearm modification or build configuration.
- *
- * @author zihluwang
- */
-@Entity
-@Table(
-    name = "modification",
-    indexes = {
-        @Index(name = "idx_modification_firearm_id", columnList = "firearm_id")
-    }
-)
-public class Modification {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @ManyToOne(fetch = FetchType.LAZY, optional = false)
-    @JoinColumn(name = "firearm_id", nullable = false, foreignKey = @ForeignKey(name = "fk_modification_firearm"))
-    private Firearm firearm;
-
-    @Column(name = "name", nullable = false, length = 64)
-    private String name;
-
-    @Column(name = "code", nullable = false, length = 64)
-    private String code;
-
-    @Type(JsonType.class)
-    @Column(name = "tags", columnDefinition = "jsonb")
-    private List<String> tags = new ArrayList<>();
-
-    @Type(JsonType.class)
-    @Column(name = "accessories", columnDefinition = "jsonb")
-    private List<Accessory> accessories = new ArrayList<>();
-
-    @Column(name = "note", columnDefinition = "TEXT")
-    private String note;
-
-    @Column(name = "author", length = 64)
-    private String author;
-
-    @Column(name = "video_url", length = 512)
-    private String videoUrl;
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public Firearm getFirearm() {
-        return firearm;
-    }
-
-    public void setFirearm(Firearm firearm) {
-        this.firearm = firearm;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getCode() {
-        return code;
-    }
-
-    public void setCode(String code) {
-        this.code = code;
-    }
-
-    public List<String> getTags() {
-        return tags;
-    }
-
-    public void setTags(List<String> tags) {
-        this.tags = tags;
-    }
-
-    public List<Accessory> getAccessories() {
-        return accessories;
-    }
-
-    public void setAccessories(List<Accessory> accessories) {
-        this.accessories = accessories;
-    }
-
-    public void addAccessory(Accessory modificationAccessory) {
-        this.accessories.add(modificationAccessory);
-    }
-
-    public void removeAccessory(Accessory modificationAccessory) {
-        this.accessories.remove(modificationAccessory);
-    }
-
-    public String getNote() {
-        return note;
-    }
-
-    public void setNote(String note) {
-        this.note = note;
-    }
-
-    public String getAuthor() {
-        return author;
-    }
-
-    public void setAuthor(String author) {
-        this.author = author;
-    }
-
-    public String getVideoUrl() {
-        return videoUrl;
-    }
-
-    public void setVideoUrl(String videoUrl) {
-        this.videoUrl = videoUrl;
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private Firearm firearm;
-        private String name;
-        private String code;
-        private List<String> tags;
-        private List<Accessory> accessories;
-        private String note;
-        private String author;
-        private String videoUrl;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder firearm(Firearm firearm) {
-            this.firearm = firearm;
-            return this;
-        }
-
-        public Builder name(String name) {
-            this.name = name;
-            return this;
-        }
-
-        public Builder code(String code) {
-            this.code = code;
-            return this;
-        }
-
-        public Builder tags(List<String> tags) {
-            this.tags = tags;
-            return this;
-        }
-
-        public Builder accessories(List<Accessory> accessories) {
-            this.accessories = accessories;
-            return this;
-        }
-
-        public Builder note(String note) {
-            this.note = note;
-            return this;
-        }
-
-        public Builder author(String author) {
-            this.author = author;
-            return this;
-        }
-
-        public Builder videoUrl(String videoUrl) {
-            this.videoUrl = videoUrl;
-            return this;
-        }
-
-        public Modification build() {
-            Modification modification = new Modification();
-            modification.id = this.id;
-            modification.firearm = this.firearm;
-            modification.name = this.name;
-            modification.code = this.code;
-            modification.tags = this.tags == null ? new ArrayList<>() : this.tags;
-            modification.accessories = this.accessories == null ? new ArrayList<>() : this.accessories;
-            modification.note = this.note;
-            modification.author = this.author;
-            modification.videoUrl = this.videoUrl;
-            return modification;
-        }
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
deleted file mode 100644
index a4eb1f1..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import java.util.Objects;
-
-/**
- * Entity representing a tuning adjustment for an accessory, stored as JSONB within Accessory.
- *
- * @author zihluwang
- */
-public class Tuning {
-
-    private String tuningName;
-    private Double tuningValue;
-
-    public Tuning() {
-    }
-
-    public String getTuningName() {
-        return tuningName;
-    }
-
-    public void setTuningName(String tuningName) {
-        this.tuningName = tuningName;
-    }
-
-    public Double getTuningValue() {
-        return tuningValue;
-    }
-
-    public void setTuningValue(Double tuningValue) {
-        this.tuningValue = tuningValue;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (!(o instanceof Tuning tuning)) {
-            return false;
-        }
-        return Objects.equals(tuningName, tuning.tuningName)
-                && Objects.equals(tuningValue, tuning.tuningValue);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(tuningName, tuningValue);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java
deleted file mode 100644
index d696b2d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java
+++ /dev/null
@@ -1,119 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.CascadeType;
-import jakarta.persistence.Column;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-import jakarta.persistence.OneToMany;
-import jakarta.persistence.Table;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing an application user with authentication credentials.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "app_user")
-public class User {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @Column(name = "username", nullable = false)
-    private String username;
-
-    @Column(name = "email", nullable = false)
-    private String email;
-
-    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
-    private List<UserCredential> credentials = new ArrayList<>();
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    public void setUsername(String username) {
-        this.username = username;
-    }
-
-    public String getEmail() {
-        return email;
-    }
-
-    public void setEmail(String email) {
-        this.email = email;
-    }
-
-    public List<UserCredential> getCredentials() {
-        return credentials;
-    }
-
-    public void setCredentials(List<UserCredential> credentials) {
-        this.credentials = credentials;
-    }
-
-    public void addCredential(UserCredential credential) {
-        this.credentials.add(credential);
-        credential.setUser(this);
-    }
-
-    public void removeCredential(UserCredential credential) {
-        this.credentials.remove(credential);
-        credential.setUser(null);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private String username;
-        private String email;
-        private List<UserCredential> credentials;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder username(String username) {
-            this.username = username;
-            return this;
-        }
-
-        public Builder email(String email) {
-            this.email = email;
-            return this;
-        }
-
-        public Builder credentials(List<UserCredential> credentials) {
-            this.credentials = credentials;
-            return this;
-        }
-
-        public User build() {
-            User user = new User();
-            user.id = this.id;
-            user.username = this.username;
-            user.email = this.email;
-            user.credentials = this.credentials == null ? new ArrayList<>() : this.credentials;
-            return user;
-        }
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java
deleted file mode 100644
index 2ecdd37..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java
+++ /dev/null
@@ -1,143 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.Column;
-import jakarta.persistence.AttributeOverride;
-import jakarta.persistence.AttributeOverrides;
-import jakarta.persistence.EmbeddedId;
-import jakarta.persistence.Entity;
-import jakarta.persistence.FetchType;
-import jakarta.persistence.ForeignKey;
-import jakarta.persistence.JoinColumn;
-import jakarta.persistence.MapsId;
-import jakarta.persistence.ManyToOne;
-import jakarta.persistence.Table;
-
-/**
- * Entity representing a user credential linked to an authentication provider.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "app_user_credential")
-public class UserCredential {
-
-	@EmbeddedId
-	@AttributeOverrides({
-		@AttributeOverride(name = "userId", column = @Column(name = "user_id")),
-		@AttributeOverride(name = "provider", column = @Column(name = "provider"))
-	})
-	private UserCredentialId id = new UserCredentialId();
-
-	@MapsId("userId")
-	@ManyToOne(fetch = FetchType.LAZY, optional = false)
-	@JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_user_credential_user"))
-	private User user;
-
-	@Column(name = "credential", nullable = false)
-	private String credential;
-
-	public UserCredentialId getId() {
-		return id;
-	}
-
-	public void setId(UserCredentialId id) {
-		this.id = id;
-	}
-
-	public User getUser() {
-		return user;
-	}
-
-	public void setUser(User user) {
-		this.user = user;
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setUserId(user == null ? null : user.getId());
-	}
-
-	public Long getUserId() {
-		return id == null ? null : id.getUserId();
-	}
-
-	public void setUserId(Long userId) {
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setUserId(userId);
-	}
-
-	public String getProvider() {
-		return id == null ? null : id.getProvider();
-	}
-
-	public void setProvider(String provider) {
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setProvider(provider);
-	}
-
-	public String getCredential() {
-		return credential;
-	}
-
-	public void setCredential(String credential) {
-		this.credential = credential;
-	}
-
-	public static Builder builder() {
-		return new Builder();
-	}
-
-	public static class Builder {
-
-		private UserCredentialId id;
-		private User user;
-		private Long userId;
-		private String provider;
-		private String credential;
-
-		public Builder id(UserCredentialId id) {
-			this.id = id;
-			return this;
-		}
-
-		public Builder user(User user) {
-			this.user = user;
-			return this;
-		}
-
-		public Builder userId(Long userId) {
-			this.userId = userId;
-			return this;
-		}
-
-		public Builder provider(String provider) {
-			this.provider = provider;
-			return this;
-		}
-
-		public Builder credential(String credential) {
-			this.credential = credential;
-			return this;
-		}
-
-		public UserCredential build() {
-			UserCredential userCredential = new UserCredential();
-			userCredential.id = this.id == null ? new UserCredentialId() : this.id;
-			userCredential.user = this.user;
-			if (this.user != null) {
-				userCredential.id.setUserId(this.user.getId());
-			}
-			if (this.userId != null) {
-				userCredential.id.setUserId(this.userId);
-			}
-			if (this.provider != null) {
-				userCredential.id.setProvider(this.provider);
-			}
-			userCredential.credential = this.credential;
-			return userCredential;
-		}
-	}
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java b/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java
deleted file mode 100644
index 1e25f45..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.Embeddable;
-
-import java.io.Serializable;
-import java.util.Objects;
-
-/**
- * Composite key for the UserCredential entity, combining user ID and provider.
- *
- * @author zihluwang
- */
-@Embeddable
-public class UserCredentialId implements Serializable {
-
-    private Long userId;
-
-    private String provider;
-
-    public Long getUserId() {
-        return userId;
-    }
-
-    public void setUserId(Long userId) {
-        this.userId = userId;
-    }
-
-    public String getProvider() {
-        return provider;
-    }
-
-    public void setProvider(String provider) {
-        this.provider = provider;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        UserCredentialId that = (UserCredentialId) o;
-        return Objects.equals(userId, that.userId) && Objects.equals(provider, that.provider);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(userId, provider);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long userId;
-        private String provider;
-
-        public Builder userId(Long userId) {
-            this.userId = userId;
-            return this;
-        }
-
-        public Builder provider(String provider) {
-            this.provider = provider;
-            return this;
-        }
-
-        public UserCredentialId build() {
-            UserCredentialId id = new UserCredentialId();
-            id.userId = this.userId;
-            id.provider = this.provider;
-            return id;
-        }
-    }
-}
-
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java b/server/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java
deleted file mode 100644
index 77bdbdb..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.onixbyte.deltaforceguide.enumeration;
-
-/**
- * Enumeration of firearm types in the Delta Force game.
- * Each type is associated with an integer code used for database persistence.
- *
- * @author zihluwang
- */
-public enum FirearmType {
-
-    RIFLE(0),
-    SUB_MACHINE_GUN(1),
-    SHOTGUN(2),
-    LIGHT_MACHINE_GUN(3),
-    DESIGNATED_MARKSMAN_RIFLE(4),
-    SNIPER_RIFLE(5),
-    PISTOL(6),
-    SPECIAL(7);
-
-    private final int code;
-
-    FirearmType(int code) {
-        this.code = code;
-    }
-
-    public int getCode() {
-        return code;
-    }
-
-    /**
-     * Resolve a FirearmType from its integer code.
-     *
-      * @param code the integer code, may be null
-     * @return the corresponding FirearmType, or null if the code is null
-     * @throws IllegalArgumentException if the code does not match any known type
-     */
-    public static FirearmType fromCode(Integer code) {
-        if (code == null) {
-            return null;
-        }
-
-        for (FirearmType type : values()) {
-            if (type.code == code) {
-                return type;
-            }
-        }
-
-        throw new IllegalArgumentException("Unknown FirearmType code: " + code);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java b/server/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java
deleted file mode 100644
index d1b7ff2..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.onixbyte.deltaforceguide.exeption;
-
-import org.springframework.http.HttpStatus;
-
-/**
- * Custom runtime exception that carries an HTTP status code for API error responses.
- *
- * @author zihluwang
- */
-public class BizException extends RuntimeException {
-
-    /**
-     * The HTTP status code associated with this business exception.
-     * <p>
-     * This status code indicates the appropriate HTTP response status that should be returned to
-     * clients when this exception occurs. It enables consistent error handling across
-     * REST API endpoints.
-     */
-    private final HttpStatus status;
-
-    public BizException(String message) {
-        super(message);
-        this.status = HttpStatus.INTERNAL_SERVER_ERROR;
-    }
-
-    public BizException(HttpStatus status, String message) {
-        super(message);
-        this.status = status;
-    }
-
-    /**
-     * Returns the HTTP status code associated with this business exception.
-     *
-     * @return the HTTP status code that should be used in the error response
-     */
-    public HttpStatus getStatus() {
-        return status;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java b/server/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java
deleted file mode 100644
index e2068a6..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java
+++ /dev/null
@@ -1,113 +0,0 @@
-package com.onixbyte.deltaforceguide.filter;
-
-import com.auth0.jwt.exceptions.JWTVerificationException;
-import com.onixbyte.deltaforceguide.client.TokenClient;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import com.onixbyte.deltaforceguide.service.CookieService;
-import jakarta.servlet.FilterChain;
-import jakarta.servlet.ServletException;
-import jakarta.servlet.http.Cookie;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.core.context.SecurityContextHolder;
-import org.springframework.stereotype.Component;
-import org.springframework.web.filter.OncePerRequestFilter;
-import org.springframework.web.servlet.HandlerExceptionResolver;
-import org.springframework.web.util.WebUtils;
-
-import java.io.IOException;
-import java.time.Duration;
-import java.time.Instant;
-import java.util.Objects;
-import java.util.Optional;
-
-/**
- * Servlet filter that extracts and validates JWT tokens from httpOnly cookies for each request.
- *
- * @author zihluwang
- */
-@Component
-public class TokenAuthenticationFilter extends OncePerRequestFilter {
-
-    private final static Logger log = LoggerFactory.getLogger(TokenAuthenticationFilter.class);
-    private static final Duration ACCESS_TOKEN_RENEW_THRESHOLD = Duration.ofMinutes(5);
-
-    private final UserManager userManager;
-    private final TokenClient tokenClient;
-    private final CookieService cookieService;
-    private final HandlerExceptionResolver handlerExceptionResolver;
-
-    public TokenAuthenticationFilter(
-            UserManager userManager,
-            TokenClient tokenClient,
-            CookieService cookieService,
-            HandlerExceptionResolver handlerExceptionResolver
-    ) {
-        this.userManager = userManager;
-        this.tokenClient = tokenClient;
-        this.cookieService = cookieService;
-        this.handlerExceptionResolver = handlerExceptionResolver;
-    }
-
-    /**
-     * Extracts JWT from httpOnly cookie, validates it, and sets the security context.
-     *
-     * @param request the HTTP request
-     * @param response the HTTP response
-     * @param filterChain the filter chain
-     */
-    @Override
-    protected void doFilterInternal(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull FilterChain filterChain
-    ) throws ServletException, IOException {
-        var token = Optional.ofNullable(WebUtils.getCookie(request, "AccessToken"))
-                .map(Cookie::getValue)
-                .orElse(null);
-        if (Objects.isNull(token) || token.isBlank()) {
-            filterChain.doFilter(request, response);
-            return;
-        }
-
-        try {
-            var decodedToken = tokenClient.verifyToken(token);
-            var username = decodedToken.getSubject();
-
-            var userWrapper = userManager.findByUsername(username);
-            if (userWrapper.isEmpty()) {
-                throw new BizException(HttpStatus.UNAUTHORIZED, "登录已过期，请重新登录");
-            }
-
-            var user = userWrapper.get();
-            var authentication = UsernamePasswordAuthentication.authenticated(user);
-            SecurityContextHolder.getContext().setAuthentication(authentication);
-
-            if (shouldRenew(decodedToken.getExpiresAt().toInstant())) {
-                var renewedToken = tokenClient.generateToken(user);
-                var renewedTokenCookie = cookieService.buildCookie("AccessToken", renewedToken);
-                response.addHeader(HttpHeaders.SET_COOKIE, renewedTokenCookie.toString());
-            }
-
-            filterChain.doFilter(request, response);
-        } catch (JWTVerificationException e) {
-            log.error("JWT verification failed.", e);
-            handlerExceptionResolver.resolveException(request, response, null,
-                    new BizException(HttpStatus.UNAUTHORIZED, "登录已过期，请重新登录"));
-        } catch (BizException e) {
-            handlerExceptionResolver.resolveException(request, response, null, e);
-        }
-    }
-
-    private boolean shouldRenew(Instant expiresAt) {
-        return Duration.between(Instant.now(), expiresAt).compareTo(ACCESS_TOKEN_RENEW_THRESHOLD) < 0;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java b/server/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java
deleted file mode 100644
index ddfd071..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package com.onixbyte.deltaforceguide.filter;
-
-import com.onixbyte.deltaforceguide.wrapper.RepeatedlyReadRequestWrapper;
-import jakarta.servlet.*;
-import jakarta.servlet.http.HttpServletRequest;
-import org.springframework.stereotype.Component;
-
-import java.io.IOException;
-
-@Component
-public class WebhookFilter implements Filter {
-    @Override
-    public void doFilter(
-            ServletRequest request,
-            ServletResponse response,
-            FilterChain chain
-    ) throws IOException, ServletException {
-        var httpRequest = (HttpServletRequest) request;
-        var wrappedRequest = new RepeatedlyReadRequestWrapper(httpRequest);
-        chain.doFilter(wrappedRequest, response);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java b/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java
deleted file mode 100644
index c1b552a..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java
+++ /dev/null
@@ -1,83 +0,0 @@
-package com.onixbyte.deltaforceguide.interceptor;
-
-import com.onixbyte.crypto.util.CryptoUtil;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.WebhookManager;
-import com.onixbyte.deltaforceguide.shared.GitHubWebhookHeader;
-import com.onixbyte.deltaforceguide.wrapper.RepeatedlyReadRequestWrapper;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Component;
-import org.springframework.web.servlet.HandlerInterceptor;
-
-import java.nio.charset.StandardCharsets;
-import java.security.InvalidKeyException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-/**
- * Verifies GitHub webhook requests by validating the {@code X-Hub-Signature-256}
- * header against the configured secret using HMAC-SHA256.
- *
- * <p>Verification is skipped when no secret is configured. The signature format is
- * {@code sha256=<hex-digest>} as documented by GitHub.
- */
-@Component
-public class GitHubWebhookInterceptor implements HandlerInterceptor {
-
-    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookInterceptor.class);
-
-    private final WebhookManager webhookManager;
-
-    public GitHubWebhookInterceptor(WebhookManager webhookManager) {
-        this.webhookManager = webhookManager;
-    }
-
-    @Override
-    public boolean preHandle(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull Object handler
-    ) {
-        if (!(request instanceof RepeatedlyReadRequestWrapper req)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR,
-                    "Request body is not readable");
-        }
-
-        var secret = webhookManager.secret();
-        if (secret == null || secret.isBlank()) {
-            log.debug("No GitHub webhook secret configured, skipping signature verification");
-            return true;
-        }
-
-        var signatureHeader = req.getHeader(GitHubWebhookHeader.SIGNATURE_256);
-        if (signatureHeader == null || signatureHeader.isBlank()) {
-            log.warn("Missing {} header from ip={}",
-                    GitHubWebhookHeader.SIGNATURE_256, request.getRemoteAddr());
-            throw new BizException(HttpStatus.UNAUTHORIZED,
-                    "Missing webhook signature header");
-        }
-
-        var body = req.getBodyString();
-        try {
-            var computed = "sha256=" + CryptoUtil.hmacSha256(body, secret);
-
-            if (!MessageDigest.isEqual(
-                    computed.getBytes(StandardCharsets.UTF_8),
-                    signatureHeader.getBytes(StandardCharsets.UTF_8))) {
-                log.warn("Invalid webhook signature from ip={}", request.getRemoteAddr());
-                throw new BizException(HttpStatus.UNAUTHORIZED, "Invalid webhook signature");
-            }
-
-            return true;
-        } catch (NoSuchAlgorithmException | InvalidKeyException e) {
-            log.error("Failed to compute HMAC-SHA256", e);
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR,
-                    "Failed to verify webhook signature");
-        }
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java b/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java
deleted file mode 100644
index c7aac50..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.onixbyte.deltaforceguide.interceptor;
-
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-import org.springframework.web.servlet.HandlerInterceptor;
-
-@Component
-public class TrafficInterceptor implements HandlerInterceptor {
-
-    private static final Logger log = LoggerFactory.getLogger(TrafficInterceptor.class);
-
-    @Override
-    public boolean preHandle(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull Object handler
-    ) {
-        var ip = resolveClientIp(request);
-        var method = request.getMethod();
-        var uri = request.getRequestURI();
-        var query = request.getQueryString();
-        var contentType = request.getContentType();
-        var contentLength = request.getContentLength();
-        var userAgent = request.getHeader("User-Agent");
-
-        log.debug("Request method={}, uri={}, query={}, ip={}, content-type={}, content-length={}, user-agent={}",
-                method, uri, query, ip, contentType, contentLength, userAgent);
-        return true;
-    }
-
-    private String resolveClientIp(HttpServletRequest request) {
-        var xForwardedFor = request.getHeader("X-Forwarded-For");
-        if (xForwardedFor != null && !xForwardedFor.isBlank()) {
-            return xForwardedFor.split(",")[0].trim();
-        }
-        var xRealIp = request.getHeader("X-Real-IP");
-        if (xRealIp != null && !xRealIp.isBlank()) {
-            return xRealIp.trim();
-        }
-        return request.getRemoteAddr();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java
deleted file mode 100644
index 378fe9b..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.AppProperties;
-import org.springframework.stereotype.Component;
-
-@Component
-public class AppManager {
-
-    private final AppProperties appProperties;
-
-    public AppManager(AppProperties appProperties) {
-        this.appProperties = appProperties;
-    }
-
-    /**
-     * Retrieves the application version.
-     *
-     * @return the version string of this application
-     */
-    public String getVersion() {
-        return "v%s-%s by @%s".formatted(
-                appProperties.version(),
-                appProperties.channel(),
-                appProperties.vendor()
-        );
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java
deleted file mode 100644
index f6ef16f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.CookieProperties;
-import org.springframework.boot.web.server.Cookie;
-import org.springframework.stereotype.Component;
-
-import java.time.Duration;
-
-/**
- * Manager providing cookie construction operations with configurable properties.
- *
- * @author zihluwang
- */
-@Component
-public class CookieManager {
-
-    private final CookieProperties cookieProperties;
-
-    public CookieManager(CookieProperties cookieProperties) {
-        this.cookieProperties = cookieProperties;
-    }
-
-    public Boolean getHttpOnly() {
-        return cookieProperties.httpOnly();
-    }
-
-    public Boolean getSecure() {
-        return cookieProperties.secure();
-    }
-
-    public Cookie.SameSite getSameSite() {
-        return cookieProperties.sameSite();
-    }
-
-    public String getPath() {
-        return cookieProperties.path();
-    }
-
-    public Duration getMaxAge() {
-        return cookieProperties.maxAge();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java
deleted file mode 100644
index 6b6ac59..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java
+++ /dev/null
@@ -1,85 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.shared.JacksonModules;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
-import org.springframework.stereotype.Component;
-import org.springframework.web.client.RestClient;
-
-import java.time.Duration;
-import java.time.LocalDate;
-import java.util.Objects;
-
-/**
- * Manager for daily password data access and caching coordination.
- *
- * @author zihluwang
- */
-@Component
-public class DailyPasswordManager {
-
-    private static final String CACHE_KEY_PREFIX = "daily-password:";
-
-    private final RestClient restClient;
-    private final RedisTemplate<String, Object> redisTemplate;
-
-    @Autowired
-    public DailyPasswordManager(
-            RestClient.Builder restClientBuilder,
-            RedisTemplate<String, Object> redisTemplate
-    ) {
-        var snakeCaseMapper = new ObjectMapper();
-        snakeCaseMapper.setPropertyNamingStrategy(
-                PropertyNamingStrategies.SnakeCaseStrategy.INSTANCE);
-        snakeCaseMapper.configure(
-                DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        snakeCaseMapper.registerModule(JacksonModules.DATE_TIME_MODULE);
-
-        this.restClient = restClientBuilder
-                .baseUrl("https://tmini.net/api")
-                .messageConverters(converters -> {
-                    converters.removeIf(
-                            MappingJackson2HttpMessageConverter.class::isInstance);
-                    converters.add(
-                            new MappingJackson2HttpMessageConverter(snakeCaseMapper));
-                })
-                .build();
-        this.redisTemplate = redisTemplate;
-    }
-
-    /**
-     * Retrieves the daily password from cache or generates a new one.
-     * @return the daily password response
-     */
-    public DailyPasswordResponse getDailyPassword() {
-        var key = CACHE_KEY_PREFIX + LocalDate.now();
-
-        var cached = redisTemplate.opsForValue().get(key);
-        if (cached != null) {
-            return (DailyPasswordResponse) cached;
-        }
-
-        var response = restClient.get()
-                .uri((uriBuilder) -> uriBuilder
-                        .path("/sjzmm")
-                        .queryParam("ckey", "")
-                        .queryParam("type", "json")
-                        .build())
-                .retrieve()
-                .body(DailyPasswordResponse.class);
-
-        if (Objects.isNull(response)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "暂无每日密码数据。");
-        }
-
-        redisTemplate.opsForValue().set(key, response, Duration.ofDays(1L));
-        return response;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java
deleted file mode 100644
index f7defab..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java
+++ /dev/null
@@ -1,130 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-import com.onixbyte.deltaforceguide.domain.dto.AccessoryRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.TuningRequest;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import com.onixbyte.deltaforceguide.repository.ModificationRepository;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Component;
-import org.springframework.transaction.annotation.Transactional;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Map;
-
-@Component
-public class ModificationManager {
-
-    private final ModificationRepository modificationRepository;
-    private final FirearmRepository firearmRepository;
-
-    public ModificationManager(
-            ModificationRepository modificationRepository,
-            FirearmRepository firearmRepository
-    ) {
-        this.modificationRepository = modificationRepository;
-        this.firearmRepository = firearmRepository;
-    }
-
-    @Transactional
-    public ModificationResponse create(ModificationRequest request) {
-        var firearm = firearmRepository.findById(request.firearmId())
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND,
-                        "Firearm not found: " + request.firearmId()));
-        var modification = toEntity(request, firearm);
-        return ModificationResponse.from(modificationRepository.save(modification));
-    }
-
-    @Transactional
-    public List<ModificationResponse> batchCreate(List<ModificationRequest> requests) {
-        var firearmIds = requests.stream()
-                .map(ModificationRequest::firearmId)
-                .collect(java.util.stream.Collectors.toCollection(LinkedHashSet::new));
-
-        Map<Long, Firearm> firearmMap = new HashMap<>();
-        firearmRepository.findAllById(firearmIds)
-                .forEach(firearm -> firearmMap.put(firearm.getId(), firearm));
-
-        if (firearmMap.size() != firearmIds.size()) {
-            var missing = firearmIds.stream()
-                    .filter((id) -> !firearmMap.containsKey(id))
-                    .toList();
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
-                    "Firearm not found: " + missing);
-        }
-
-        var modifications = requests.stream()
-                .map(req -> toEntity(req, firearmMap.get(req.firearmId())))
-                .toList();
-        return modificationRepository.saveAll(modifications)
-                .stream()
-                .map(ModificationResponse::from)
-                .toList();
-    }
-
-    public Long resolveFirearmId(Long firearmId, String firearmName) {
-        if (firearmId != null) {
-            return firearmId;
-        }
-        if (firearmName == null || firearmName.isBlank()) {
-            return null;
-        }
-        var matches = firearmRepository.findByName(firearmName);
-        if (matches.isEmpty()) {
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
-                    "Firearm not found by name: " + firearmName);
-        }
-        return matches.getFirst().getId();
-    }
-
-    private Modification toEntity(ModificationRequest request, Firearm firearm) {
-        return Modification.builder()
-                .firearm(firearm)
-                .name(request.name())
-                .code(request.code())
-                .tags(request.tags())
-                .accessories(toAccessories(request.accessories()))
-                .note(request.note())
-                .author(request.author())
-                .videoUrl(request.videoUrl())
-                .build();
-    }
-
-    private List<Accessory> toAccessories(List<AccessoryRequest> requests) {
-        if (requests == null) {
-            return new ArrayList<>();
-        }
-        return requests.stream().map(this::toAccessory).toList();
-    }
-
-    private Accessory toAccessory(AccessoryRequest request) {
-        var accessory = new Accessory();
-        accessory.setSlotName(request.slotName());
-        accessory.setAccessoryName(request.accessoryName());
-        accessory.setTunings(toTunings(request.tunings()));
-        return accessory;
-    }
-
-    private List<Tuning> toTunings(List<TuningRequest> requests) {
-        if (requests == null) {
-            return new ArrayList<>();
-        }
-        return requests.stream().map(this::toTuning).toList();
-    }
-
-    private Tuning toTuning(TuningRequest request) {
-        var tuning = new Tuning();
-        tuning.setTuningName(request.tuningName());
-        tuning.setTuningValue(request.tuningValue());
-        return tuning;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java
deleted file mode 100644
index d77c687..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.repository.UserCredentialRepository;
-import org.springframework.stereotype.Component;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Manager for user credential persistence and authentication data access.
- *
- * @author zihluwang
- */
-@Component
-public class UserCredentialManager {
-
-    private final UserCredentialRepository userCredentialRepository;
-
-    public UserCredentialManager(UserCredentialRepository userCredentialRepository) {
-        this.userCredentialRepository = userCredentialRepository;
-    }
-
-    /**
-     * Finds all credentials belonging to a specific user.
-     *
-     * @param userId the user ID
-     * @return list of matching credentials
-     */
-    public List<UserCredential> findAllByUserId(Long userId) {
-        return userCredentialRepository.findAllByUserId(userId);
-    }
-
-    /**
-     * Finds a credential for a specific user and provider combination.
-     *
-     * @param userId the user ID
-     * @param provider the authentication provider
-     * @return the matching credential, if found
-     */
-    public Optional<UserCredential> findByUserIdAndProvider(Long userId, String provider) {
-        return userCredentialRepository.findByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Persists a new or updated credential.
-     *
-     * @param userCredential the credential to save
-     * @return the saved credential
-     */
-    public UserCredential save(UserCredential userCredential) {
-        return userCredentialRepository.save(userCredential);
-    }
-
-    /**
-     * Deletes a credential for a specific user and provider.
-     *
-     * @param userId the user ID
-     * @param provider the authentication provider
-     */
-    public void deleteByUserIdAndProvider(Long userId, String provider) {
-        userCredentialRepository.deleteByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Deletes all credentials belonging to a user.
-     *
-     * @param userId the user ID
-     */
-    public void deleteAllByUserId(Long userId) {
-        userCredentialRepository.deleteAllByUserId(userId);
-    }
-}
-
-
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java
deleted file mode 100644
index d63c0f7..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.repository.UserRepository;
-import org.springframework.stereotype.Component;
-import org.springframework.transaction.annotation.Transactional;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Manager for user entity persistence and query operations.
- *
- * @author zihluwang
- */
-@Component
-public class UserManager {
-
-    private final UserRepository userRepository;
-
-    public UserManager(UserRepository userRepository) {
-        this.userRepository = userRepository;
-    }
-
-    /**
-     * Finds a user by their ID.
-     *
-     * @param id the user ID
-     * @return the matching user, if found
-     */
-    public Optional<User> findById(Long id) {
-        return userRepository.findById(id);
-    }
-
-    /**
-     * Retrieves all registered users.
-     * @return list of all users
-     */
-    public List<User> findAll() {
-        return userRepository.findAll();
-    }
-
-    /**
-     * Finds a user by their username.
-     *
-     * @param username the username to search for
-     * @return the matching user, if found
-     */
-    public Optional<User> findByUsername(String username) {
-        return userRepository.findByUsername(username);
-    }
-
-    @Transactional(readOnly = true)
-    public Optional<User> findByEmail(String email) {
-        return userRepository.findByEmail(email);
-    }
-
-    /**
-     * Persists a new or updated user.
-     *
-     * @param user the user to save
-     * @return the saved user
-     */
-    public User save(User user) {
-        return userRepository.save(user);
-    }
-
-    /**
-     * Deletes a user by their ID.
-     *
-     * @param id the user ID to delete
-     */
-    public void deleteById(Long id) {
-        userRepository.deleteById(id);
-    }
-
-    /**
-     * Finds a user by their username or email address.
-     *
-     * @param principal the username or email to search for
-     * @return the matching user, if found
-     */
-    public Optional<User> findByUsernameOrEmail(String principal) {
-        return userRepository.findByUsernameOrEmail(principal);
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java b/server/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java
deleted file mode 100644
index 21c5b52..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.GitHubWebhookProperties;
-import org.springframework.stereotype.Component;
-
-import java.util.List;
-
-@Component
-public class WebhookManager {
-
-    private final GitHubWebhookProperties gitHubWebhookProperties;
-
-    public WebhookManager(GitHubWebhookProperties gitHubWebhookProperties) {
-        this.gitHubWebhookProperties = gitHubWebhookProperties;
-    }
-
-    public String secret() {
-        return gitHubWebhookProperties.secret();
-    }
-
-    public List<String> allowedUsers() {
-        return gitHubWebhookProperties.allowedUsers();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java b/server/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java
deleted file mode 100644
index b13bca2..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-@ConfigurationProperties(prefix = "app.common")
-public record AppProperties(
-        String version,
-        String channel,
-        String vendor
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java b/server/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java
deleted file mode 100644
index 0cfde08..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.boot.context.properties.bind.DefaultValue;
-import org.springframework.boot.web.server.Cookie;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for HTTP cookies used in authentication, prefixed with "app.cookie".
- *
- * @param httpOnly  whether the cookie is httpOnly
- * @param secure    whether the cookie is secure
- * @param path      the cookie path
- * @param maxAge    the maximum age of the cookie
- * @param sameSite  the SameSite policy for the cookie
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.cookie")
-public record CookieProperties(
-        @DefaultValue("true") Boolean httpOnly,
-        @DefaultValue("true") Boolean secure,
-        @DefaultValue("/") String path,
-        @DefaultValue("PT2H") Duration maxAge,
-        @DefaultValue("LAX") Cookie.SameSite sameSite
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java b/server/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
deleted file mode 100644
index 193640f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.boot.context.properties.bind.DefaultValue;
-import org.springframework.http.HttpMethod;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for CORS settings, prefixed with "app.cors".
- *
- * @param allowedHeaders      headers allowed in CORS requests
- * @param allowedMethods      HTTP methods allowed in CORS requests
- * @param allowedOrigins      origins permitted to make cross-origin requests
- * @param allowCredentials    whether credentials are allowed in CORS requests
- * @param allowPrivateNetwork whether private network access is permitted
- * @param maxAge              how long the CORS preflight response may be cached
- * @param exposedHeaders      headers exposed to the client in CORS responses
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.cors")
-public record CorsProperties(
-        @DefaultValue({"Content-Type", "Authorization"})
-        String[] allowedHeaders,
-        @DefaultValue({"GET", "POST", "PUT", "PATCH", "DELETE"})
-        HttpMethod[] allowedMethods,
-        String[] allowedOrigins,
-        boolean allowCredentials,
-        boolean allowPrivateNetwork,
-        @DefaultValue("PT2H")
-        Duration maxAge,
-        @DefaultValue({"Content-Type", "Authorization"})
-        String[] exposedHeaders
-) {
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java b/server/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java
deleted file mode 100644
index 673051a..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-import java.util.List;
-
-@ConfigurationProperties(prefix = "app.webhook.github")
-public record GitHubWebhookProperties(
-        String secret,
-        List<String> allowedUsers
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java b/server/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java
deleted file mode 100644
index 74c693c..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for JWT token generation and validation, prefixed with "app.jwt".
- *
- * @param issuer    the JWT issuer claim
- * @param secret    the signing secret for JWT tokens
- * @param validTime the duration for which a token remains valid
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.jwt")
-public record TokenProperties(
-        String issuer,
-        String secret,
-        Duration validTime
-) {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java b/server/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java
deleted file mode 100644
index 46c84b9..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-
-/**
- * Spring Data JPA repository for {@link Firearm} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface FirearmRepository extends JpaRepository<Firearm, Long> {
-
-	Page<Firearm> findAllByType(FirearmType type, Pageable pageable);
-
-	List<Firearm> findByName(String name);
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java b/server/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java
deleted file mode 100644
index 3d9fcc0..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import org.jspecify.annotations.NonNull;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link Modification} entity operations,
- * including native JSONB tag filtering for Postgres.
- *
- * @author zihluwang
- */
-@Repository
-public interface ModificationRepository extends JpaRepository<Modification, Long> {
-
-    @EntityGraph(attributePaths = {"firearm"})
-    Page<Modification> findAllBy(Pageable pageable);
-
-    @EntityGraph(attributePaths = {"firearm"})
-    Page<Modification> findAllByFirearm_Id(Long firearmId, Pageable pageable);
-
-    @Override
-    @EntityGraph(attributePaths = {"firearm"})
-    @NonNull
-    Optional<Modification> findById(@NonNull Long id);
-
-    /**
-     * Page query modifications with optional firearm and JSONB tag filtering.
-     *
-     * @param firearmId optional firearm ID filter (nullable)
-     * @param tagsJson  optional JSON array of tags to match via Postgres {@code @>} operator (nullable)
-     * @param pageable  pagination information
-     * @return a page of matching modifications
-     */
-    @Query(value = """
-            SELECT * FROM modification m
-            WHERE (:firearmId IS NULL OR m.firearm_id = :firearmId)
-              AND (CAST(:tagsJson AS text) IS NULL OR cast(m.tags as jsonb) @> cast(CAST(:tagsJson AS text) as jsonb))
-            """,
-            countQuery = """
-            SELECT count(*) FROM modification m
-            WHERE (:firearmId IS NULL OR m.firearm_id = :firearmId)
-              AND (CAST(:tagsJson AS text) IS NULL OR cast(m.tags as jsonb) @> cast(CAST(:tagsJson AS text) as jsonb))
-            """,
-            nativeQuery = true)
-    Page<Modification> pageQueryByFirearmAndTags(@Param("firearmId") Long firearmId, @Param("tagsJson") String tagsJson, Pageable pageable);
-
-    /**
-     * Retrieve all distinct tag values from modifications, optionally filtered by firearm.
-     *
-     * @param firearmId optional firearm ID filter (nullable)
-     * @return list of distinct tag strings
-     */
-    @Query(value = "SELECT DISTINCT jsonb_array_elements_text(cast(tags as jsonb)) FROM modification WHERE (:firearmId IS NULL OR firearm_id = :firearmId)", nativeQuery = true)
-    List<String> findAllTags(@Param("firearmId") Long firearmId);
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java b/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java
deleted file mode 100644
index 53776e3..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.domain.entity.UserCredentialId;
-import org.springframework.data.jpa.repository.Modifying;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link UserCredential} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface UserCredentialRepository extends JpaRepository<UserCredential, UserCredentialId> {
-
-    /**
-     * Find all credentials belonging to a given user.
-     *
-     * @param userId the user ID
-     * @return list of matching credentials
-     */
-    @EntityGraph(attributePaths = {"user"})
-    @Query("""
-            select uc
-            from UserCredential uc
-            where uc.user.id = :userId
-            """)
-    List<UserCredential> findAllByUserId(@Param("userId") Long userId);
-
-    /**
-     * Find a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider identifier
-     * @return an optional containing the matching credential, or empty if not found
-     */
-    @EntityGraph(attributePaths = {"user"})
-    @Query("""
-            select uc
-            from UserCredential uc
-            where uc.user.id = :userId
-              and uc.id.provider = :provider
-            """)
-    Optional<UserCredential> findByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
-
-    /**
-     * Delete a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider identifier
-     */
-    @Modifying
-    @Query("""
-            delete from UserCredential uc
-            where uc.user.id = :userId
-              and uc.id.provider = :provider
-            """)
-    void deleteByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
-
-    /**
-     * Delete all credentials for a given user.
-     *
-     * @param userId the user ID
-     */
-    @Modifying
-    @Query("""
-            delete from UserCredential uc
-            where uc.user.id = :userId
-            """)
-    void deleteAllByUserId(@Param("userId") Long userId);
-}
-
-
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java b/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java
deleted file mode 100644
index 7a0a363..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import org.jspecify.annotations.NonNull;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link User} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface UserRepository extends JpaRepository<User, Long> {
-
-    @Override
-    @EntityGraph(attributePaths = {"credentials"})
-    @NonNull
-    Optional<User> findById(@NonNull Long id);
-
-    @EntityGraph(attributePaths = {"credentials"})
-    Optional<User> findByUsername(String username);
-
-    @EntityGraph(attributePaths = {"credentials"})
-    Optional<User> findByEmail(String email);
-
-    boolean existsByUsername(String username);
-
-    boolean existsByEmail(String email);
-
-    /**
-     * Find a user by either username or email.
-     *
-     * @param principal the username or email to search for
-     * @return an optional containing the matching user, or empty if not found
-     */
-    @EntityGraph(attributePaths = {"credentials"})
-    @Query("""
-            select u
-            from User u
-            where u.username = :principal
-               or u.email = :principal
-            """)
-    Optional<User> findByUsernameOrEmail(@Param("principal") String principal);
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java b/server/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java
deleted file mode 100644
index 9b6b014..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.onixbyte.deltaforceguide.security.annotation;
-
-import org.springframework.security.access.prepost.PreAuthorize;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Annotation to mark controller endpoints that require authentication.
- *
- * @author zihluwang
- */
-@Target({ElementType.METHOD, ElementType.TYPE})
-@Retention(RetentionPolicy.RUNTIME)
-@PreAuthorize("isAuthenticated()")
-public @interface RequiresAuth {
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java b/server/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java
deleted file mode 100644
index 9bd2ae3..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.security.authentication;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.CredentialsContainer;
-import org.springframework.security.core.GrantedAuthority;
-
-import java.util.Collection;
-import java.util.List;
-
-/**
- * Custom authentication token for username/password-based login flows.
- *
- * @author zihluwang
- */
-public class UsernamePasswordAuthentication implements Authentication, CredentialsContainer {
-    private final String username;
-    private String password;
-    private boolean authenticated;
-    private User user;
-
-    private UsernamePasswordAuthentication(String username, String password, boolean authenticated, User user) {
-        this.username = username;
-        this.password = password;
-        this.authenticated = authenticated;
-        this.user = user;
-    }
-
-    public static UsernamePasswordAuthentication unauthenticated(String username, String password) {
-        return new UsernamePasswordAuthentication(username, password, false, null);
-    }
-
-    public static UsernamePasswordAuthentication authenticated(User user) {
-        return new UsernamePasswordAuthentication(user.getUsername(), null, true, user);
-    }
-
-    @Override
-    public Collection<? extends GrantedAuthority> getAuthorities() {
-        return List.of();
-    }
-
-    @Override
-    public String getCredentials() {
-        return password;
-    }
-
-    @Override
-    public User getDetails() {
-        return user;
-    }
-
-    @Override
-    public String getPrincipal() {
-        return username;
-    }
-
-    @Override
-    public boolean isAuthenticated() {
-        return authenticated;
-    }
-
-    @Override
-    public void setAuthenticated(boolean authenticated) throws IllegalArgumentException {
-        this.authenticated = authenticated;
-    }
-
-    @Override
-    public String getName() {
-        return username;
-    }
-
-    @Override
-    public void eraseCredentials() {
-        this.password = null;
-    }
-
-    public void setDetails(User user) {
-        this.user = user;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java b/server/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java
deleted file mode 100644
index 01e6baa..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java
+++ /dev/null
@@ -1,100 +0,0 @@
-package com.onixbyte.deltaforceguide.security.provider;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import com.onixbyte.deltaforceguide.repository.UserCredentialRepository;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import com.onixbyte.deltaforceguide.shared.CredentialProvider;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.domain.Example;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.authentication.AuthenticationProvider;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.AuthenticationException;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.stereotype.Component;
-
-/**
- * Authentication provider that validates username/password credentials against stored BCrypt hashes.
- *
- * @author zihluwang
- */
-@Component
-public class UsernamePasswordAuthenticationProvider implements AuthenticationProvider {
-
-    private static final Logger log = LoggerFactory.getLogger(UsernamePasswordAuthenticationProvider.class);
-    private final UserManager userManager;
-    private final PasswordEncoder passwordEncoder;
-    private final UserCredentialRepository userCredentialRepository;
-
-    @Autowired
-    public UsernamePasswordAuthenticationProvider(
-            UserManager userManager,
-            PasswordEncoder passwordEncoder,
-            UserCredentialRepository userCredentialRepository
-    ) {
-        this.userManager = userManager;
-        this.passwordEncoder = passwordEncoder;
-        this.userCredentialRepository = userCredentialRepository;
-    }
-
-    /**
-     * Validates the username/password credentials against stored BCrypt hashes.
-     *
-     * @param authentication the authentication request object
-     * @return a fully authenticated object including user details
-     */
-    @Override
-    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
-        if (!(authentication instanceof UsernamePasswordAuthentication usernamePasswordAuthentication)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "用户认证失败，请稍后再试。");
-        }
-
-        // get userContainer from database
-        var userContainer = userManager.findByUsernameOrEmail(usernamePasswordAuthentication.getPrincipal());
-        if (userContainer.isEmpty()) {
-            log.error("User {} is trying to authenticate but no userContainer found.", usernamePasswordAuthentication.getPrincipal());
-            throw new BizException(HttpStatus.UNAUTHORIZED, "用户名或密码错误。");
-        }
-
-        var user = userContainer.get();
-
-        var userCredentialExample = new UserCredential();
-        userCredentialExample.setUserId(user.getId());
-        userCredentialExample.setProvider(CredentialProvider.LOCAL);
-
-        // get userContainer credentials from database
-        var userCredentials = userCredentialRepository.findOne(Example.of(userCredentialExample))
-                .orElseThrow(() -> new BizException(HttpStatus.UNAUTHORIZED, "您还没有配置密码，请联系管理员处理。"));
-
-        // validate password
-        if (!passwordEncoder.matches(usernamePasswordAuthentication.getCredentials(), userCredentials.getCredential())) {
-            log.error("User {} is trying to authenticate but password is incorrect.", usernamePasswordAuthentication.getPrincipal());
-            throw new BizException(HttpStatus.UNAUTHORIZED, "用户名或密码错误。");
-        }
-
-        // erase credentials
-        usernamePasswordAuthentication.eraseCredentials();
-
-        // set values
-        usernamePasswordAuthentication.setAuthenticated(true);
-        usernamePasswordAuthentication.setDetails(user);
-
-        return usernamePasswordAuthentication;
-    }
-
-    /**
-     * Checks if this provider supports the given authentication type.
-     *
-     * @param authentication the authentication class to check
-     * @return true if this provider supports the given type
-     */
-    @Override
-    public boolean supports(Class<?> authentication) {
-        return UsernamePasswordAuthentication.class.isAssignableFrom(authentication);
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java
deleted file mode 100644
index 68f50bd..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.manager.AppManager;
-import org.springframework.stereotype.Service;
-
-@Service
-public class AppService {
-
-    private final AppManager appManager;
-
-    public AppService(AppManager appManager) {
-        this.appManager = appManager;
-    }
-
-    public String getVersion() {
-        return appManager.getVersion();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java
deleted file mode 100644
index da41902..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.LoginRequest;
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.stereotype.Service;
-
-/**
- * Service handling user authentication, login, and session management.
- *
- * @author zihluwang
- */
-@Service
-public class AuthService {
-
-    private static final Logger log = LoggerFactory.getLogger(AuthService.class);
-    private final AuthenticationManager authenticationManager;
-
-    public AuthService(AuthenticationManager authenticationManager) {
-        this.authenticationManager = authenticationManager;
-    }
-
-    /**
-     * Authenticates a user with the given login credentials.
-     * <p>
-     * Delegates authentication to Spring Security's {@link AuthenticationManager} and verifies
-     * that the result is of the expected {@link UsernamePasswordAuthentication} type.
-     *
-     * @param request the login credentials containing principle and password
-     * @return the authenticated {@link User}
-     * @throws BizException if authentication fails or the result type is unexpected
-     */
-    public User login(LoginRequest request) {
-        var _authentication = authenticationManager.authenticate(UsernamePasswordAuthentication
-                .unauthenticated(request.principle(), request.credential()));
-        if (!(_authentication instanceof UsernamePasswordAuthentication authentication)) {
-            log.error(
-                    "Type mismatched, required type is UsernamePasswordAuthentication but got {}.",
-                    _authentication.getClass()
-            );
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "登录服务异常，请稍后再试。");
-        }
-
-        return authentication.getDetails();
-    }
-
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java
deleted file mode 100644
index eb93086..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java
+++ /dev/null
@@ -1,67 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.manager.CookieManager;
-import org.springframework.http.ResponseCookie;
-import org.springframework.stereotype.Service;
-
-import java.time.Duration;
-
-/**
- * Service for building HTTP cookies with configurable properties.
- *
- * @author zihluwang
- */
-@Service
-public class CookieService {
-
-    private final CookieManager cookieManager;
-
-    public CookieService(CookieManager cookieManager) {
-        this.cookieManager = cookieManager;
-    }
-
-    /**
-     * Builds a response cookie with the default max age from configuration.
-     *
-     * @param cookieName the cookie name
-     * @param value      the cookie value
-     * @return a configured ResponseCookie
-     */
-    public ResponseCookie buildCookie(String cookieName, String value) {
-        return buildCookieInternal(cookieName, value, cookieManager.getMaxAge());
-    }
-
-    /**
-     * Builds a response cookie with a custom valid duration.
-     *
-     * @param cookieName    the cookie name
-     * @param value         the cookie value
-     * @param validDuration the cookie's max age
-     * @return a configured ResponseCookie
-     */
-    public ResponseCookie buildCookie(String cookieName, String value, Duration validDuration) {
-        return buildCookieInternal(cookieName, value, validDuration);
-    }
-
-    /**
-     * Creates a response cookie builder with specified name, value and valid duration.
-     *
-     * @param name   name of the cookie
-     * @param value  value of the cookie
-     * @param maxAge valid duration of the cookie
-     * @return cookie builder
-     */
-    protected ResponseCookie buildCookieInternal(
-            String name,
-            String value,
-            Duration maxAge
-    ) {
-        return ResponseCookie.from(name, value)
-                .secure(cookieManager.getSecure())
-                .maxAge(maxAge)
-                .httpOnly(cookieManager.getHttpOnly())
-                .path(cookieManager.getPath())
-                .sameSite(cookieManager.getSameSite().attributeValue())
-                .build();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java
deleted file mode 100644
index fa2118d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.manager.DailyPasswordManager;
-import org.springframework.stereotype.Service;
-
-/**
- * Service for generating and caching daily rotation passwords.
- *
- * @author zihluwang
- */
-@Service
-public class DailyPasswordService {
-
-    private final DailyPasswordManager dailyPasswordManager;
-
-    public DailyPasswordService(DailyPasswordManager dailyPasswordManager) {
-        this.dailyPasswordManager = dailyPasswordManager;
-    }
-
-    /**
-     * Retrieves the daily password for the current day.
-     * @return the daily password response
-     */
-    public DailyPasswordResponse getDailyPassword() {
-        return dailyPasswordManager.getDailyPassword();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java
deleted file mode 100644
index 5f5098b..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java
+++ /dev/null
@@ -1,111 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.FirearmRequest;
-import com.onixbyte.deltaforceguide.domain.dto.FirearmResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-/**
- * Service handling firearm business logic including CRUD operations and queries.
- *
- * @author zihluwang
- */
-@Service
-public class FirearmService {
-
-    private final FirearmRepository firearmRepository;
-
-    public FirearmService(FirearmRepository firearmRepository) {
-        this.firearmRepository = firearmRepository;
-    }
-
-    /**
-     * Queries firearms with optional type filter and pagination.
-     *
-     * @param type optional firearm type filter
-     * @param pageable pagination parameters
-     * @return a paginated response of firearm records
-     */
-    public PageResponse<FirearmResponse> pageQuery(FirearmType type, Pageable pageable) {
-        Page<Firearm> page = type == null
-                ? firearmRepository.findAll(pageable)
-                : firearmRepository.findAllByType(type, pageable);
-
-        return PageResponse.from(page.map(FirearmResponse::from));
-    }
-
-    /**
-     * Finds a firearm by its ID.
-     *
-     * @param id the firearm ID
-     * @return the firearm response
-     */
-    public FirearmResponse queryById(Long id) {
-        return firearmRepository.findById(id)
-                .map(FirearmResponse::from)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-    }
-
-    /**
-     * Creates a new firearm from the provided request data.
-     *
-     * @param request the firearm creation request
-     * @return the created firearm response
-     */
-    public FirearmResponse addFirearm(FirearmRequest request) {
-        var firearm = firearmRepository.save(Firearm.builder()
-                .name(request.name())
-                .type(request.type())
-                .level(request.level())
-                .calibre(request.calibre())
-                .fireRate(request.fireRate())
-                .armourDamage(request.armourDamage())
-                .bodyDamage(request.bodyDamage())
-                .review(request.review())
-                .build());
-        
-        return FirearmResponse.from(firearm);
-    }
-
-    /**
-     * Updates an existing firearm identified by ID.
-     *
-     * @param id the firearm ID
-     * @param request the updated firearm data
-     * @return the updated firearm response
-     */
-    public FirearmResponse updateFirearm(Long id, FirearmRequest request) {
-        var firearm = firearmRepository.findById(id)
-                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-
-        firearm.setName(request.name());
-        firearm.setType(request.type());
-        firearm.setLevel(request.level());
-        firearm.setCalibre(request.calibre());
-        firearm.setFireRate(request.fireRate());
-        firearm.setArmourDamage(request.armourDamage());
-        firearm.setBodyDamage(request.bodyDamage());
-        firearm.setReview(request.review());
-
-        return FirearmResponse.from(firearmRepository.save(firearm));
-    }
-
-    /**
-     * Deletes a firearm by its ID.
-     *
-     * @param id the firearm ID to delete
-     */
-    public void deleteFirearm(Long id) {
-        Firearm firearm = firearmRepository.findById(id)
-                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-        firearmRepository.delete(firearm);
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java
deleted file mode 100644
index 9b97e8f..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java
+++ /dev/null
@@ -1,219 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.AccessoryRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.domain.dto.TuningRequest;
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-import com.onixbyte.deltaforceguide.manager.ModificationManager;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import com.onixbyte.deltaforceguide.repository.ModificationRepository;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.ArrayList;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-
-/**
- * Service handling modification business logic including CRUD, batch operations, and tag filtering.
- *
- * @author zihluwang
- */
-@Service
-public class ModificationService {
-
-    private final ModificationRepository modificationRepository;
-    private final FirearmRepository firearmRepository;
-    private final ModificationManager modificationManager;
-    private final ObjectMapper objectMapper;
-
-    public ModificationService(
-            ModificationRepository modificationRepository,
-            FirearmRepository firearmRepository,
-            ModificationManager modificationManager,
-            ObjectMapper objectMapper
-    ) {
-        this.modificationRepository = modificationRepository;
-        this.firearmRepository = firearmRepository;
-        this.modificationManager = modificationManager;
-        this.objectMapper = objectMapper;
-    }
-
-    /**
-     * Queries modifications with optional firearm and tag filters.
-     *
-     * @param firearmId optional firearm ID filter
-     * @param tags optional tag list filter
-     * @param pageable pagination parameters
-     * @return a paginated response of modification records
-     */
-    public PageResponse<ModificationResponse> pageQuery(Long firearmId, List<String> tags, Pageable pageable) {
-        String tagsJson = null;
-        if (tags != null && !tags.isEmpty()) {
-            try {
-                tagsJson = objectMapper.writeValueAsString(tags);
-            } catch (JsonProcessingException e) {
-                throw new RuntimeException("Failed to serialize tags", e);
-            }
-        }
-        
-        Page<Modification> page;
-        if (tagsJson != null || firearmId != null) {
-            page = modificationRepository.pageQueryByFirearmAndTags(firearmId, tagsJson, pageable);
-        } else {
-            page = modificationRepository.findAllBy(pageable);
-        }
-
-        return PageResponse.from(page.map(ModificationResponse::from));
-    }
-
-    /**
-     * Finds a modification by its ID.
-     *
-     * @param id the modification ID
-     * @return the modification response
-     */
-    public ModificationResponse queryById(Long id) {
-        return modificationRepository.findById(id)
-                .map(ModificationResponse::from)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-    }
-
-    /**
-     * Finds all unique tags across modifications, optionally scoped to a firearm.
-     *
-     * @param firearmId optional firearm ID to scope the tag search
-     * @return list of unique tag strings
-     */
-    public List<String> findAllTags(Long firearmId) {
-        return modificationRepository.findAllTags(firearmId);
-    }
-
-    /**
-     * Creates a new modification for a given firearm.
-     *
-     * @param request the modification creation request
-     * @return the created modification response
-     */
-    public ModificationResponse create(ModificationRequest request) {
-        return modificationManager.create(request);
-    }
-
-    /**
-     * Creates multiple modifications in a single batch operation.
-     *
-     * @param requests list of modification creation requests
-     * @return list of created modification responses
-     */
-    public List<ModificationResponse> batchCreate(List<ModificationRequest> requests) {
-        return modificationManager.batchCreate(requests);
-    }
-
-    /**
-     * Updates an existing modification identified by ID.
-     *
-     * @param id the modification ID
-     * @param request the updated modification data
-     * @return the updated modification response
-     */
-    public ModificationResponse update(Long id, ModificationRequest request) {
-        Modification modification = modificationRepository.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-        Firearm firearm = firearmRepository.findById(request.firearmId())
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Firearm not found: " + request.firearmId()));
-
-        modification.setFirearm(firearm);
-        modification.setName(request.name());
-        modification.setCode(request.code());
-        modification.setTags(safeTags(request.tags()));
-        modification.setAccessories(toAccessories(request.accessories()));
-        modification.setNote(request.note());
-        modification.setAuthor(request.author());
-        modification.setVideoUrl(request.videoUrl());
-
-        return ModificationResponse.from(modificationRepository.save(modification));
-    }
-
-    /**
-     * Deletes a modification by its ID.
-     *
-     * @param id the modification ID to delete
-     */
-    public void delete(Long id) {
-        Modification modification = modificationRepository.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-        modificationRepository.delete(modification);
-    }
-
-    /**
-     * Deletes multiple modifications in a single batch operation.
-     *
-     * @param ids list of modification IDs to delete
-     */
-    public void batchDelete(List<Long> ids) {
-        Set<Long> uniqueIds = new LinkedHashSet<>(ids);
-        List<Modification> modifications = modificationRepository.findAllById(uniqueIds);
-
-        if (modifications.size() != uniqueIds.size()) {
-            Set<Long> foundIds = modifications.stream()
-                    .map(Modification::getId)
-                    .collect(java.util.stream.Collectors.toSet());
-            List<Long> missingIds = uniqueIds.stream()
-                    .filter(id -> !foundIds.contains(id))
-                    .toList();
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + missingIds);
-        }
-
-        modificationRepository.deleteAllInBatch(modifications);
-    }
-
-    private List<String> safeTags(List<String> tags) {
-        return tags == null ? new ArrayList<>() : tags;
-    }
-
-    private List<Accessory> toAccessories(List<AccessoryRequest> accessoryRequests) {
-        if (accessoryRequests == null) {
-            return new ArrayList<>();
-        }
-
-        return accessoryRequests.stream()
-                .map(this::toAccessory)
-                .toList();
-    }
-
-    private Accessory toAccessory(AccessoryRequest request) {
-        Accessory accessory = new Accessory();
-        accessory.setSlotName(request.slotName());
-        accessory.setAccessoryName(request.accessoryName());
-        accessory.setTunings(toTunings(request.tunings()));
-        return accessory;
-    }
-
-    private List<Tuning> toTunings(List<TuningRequest> tuningRequests) {
-        if (tuningRequests == null) {
-            return new ArrayList<>();
-        }
-
-        return tuningRequests.stream()
-                .map(this::toTuning)
-                .toList();
-    }
-
-    private Tuning toTuning(TuningRequest request) {
-        Tuning tuning = new Tuning();
-        tuning.setTuningName(request.tuningName());
-        tuning.setTuningValue(request.tuningValue());
-        return tuning;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java
deleted file mode 100644
index 700e26d..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java
+++ /dev/null
@@ -1,155 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.manager.UserCredentialManager;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.List;
-
-/**
- * Service for user account management and profile operations.
- *
- * @author zihluwang
- */
-@Service
-public class UserService {
-
-    private final UserManager userManager;
-    private final UserCredentialManager userCredentialManager;
-
-    public UserService(UserManager userManager, UserCredentialManager userCredentialManager) {
-        this.userManager = userManager;
-        this.userCredentialManager = userCredentialManager;
-    }
-
-    /**
-     * Retrieves all registered users.
-     *
-     * @return list of all users
-     */
-    public List<User> findAll() {
-        return userManager.findAll();
-    }
-
-    /**
-     * Finds a user by their ID.
-     *
-     * @param id the user ID
-     * @return the user
-     */
-    public User queryById(Long id) {
-        return userManager.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + id));
-    }
-
-    /**
-     * Finds a user by their username.
-     *
-     * @param username the username to search for
-     * @return the user
-     */
-    public User queryByUsername(String username) {
-        return userManager.findByUsername(username)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + username));
-    }
-
-    /**
-     * Creates a new user account.
-     *
-     * @param user the user entity to persist
-     * @return the saved user entity
-     */
-    public User create(User user) {
-        return userManager.save(user);
-    }
-
-    /**
-     * Updates an existing user account.
-     *
-     * @param user the user entity with updated fields
-     * @return the saved user entity
-     */
-    public User update(User user) {
-        if (user.getId() == null || userManager.findById(user.getId()).isEmpty()) {
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + user.getId());
-        }
-        return userManager.save(user);
-    }
-
-    /**
-     * Finds all credentials associated with a user.
-     *
-     * @param userId the user ID
-     * @return list of user credentials
-     */
-    public List<UserCredential> findCredentials(Long userId) {
-        ensureUserExists(userId);
-        return userCredentialManager.findAllByUserId(userId);
-    }
-
-    /**
-     * Queries a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider
-     * @return the matching credential
-     */
-    public UserCredential queryCredential(Long userId, String provider) {
-        ensureUserExists(userId);
-        return userCredentialManager.findByUserIdAndProvider(userId, provider)
-                .orElseThrow(() -> new ResponseStatusException(
-                        HttpStatus.NOT_FOUND,
-                        "User credential not found: userId=" + userId + ", provider=" + provider));
-    }
-
-    /**
-     * Creates or updates a credential for a user and provider.
-     *
-     * @param userId     the user ID
-     * @param provider   the authentication provider
-     * @param credential the credential value
-     * @return the saved credential
-     */
-    public UserCredential upsertCredential(Long userId, String provider, String credential) {
-        User user = ensureUserExists(userId);
-        UserCredential userCredential = userCredentialManager.findByUserIdAndProvider(userId, provider)
-                .orElseGet(UserCredential::new);
-        userCredential.setUser(user);
-        userCredential.setProvider(provider);
-        userCredential.setCredential(credential);
-        return userCredentialManager.save(userCredential);
-    }
-
-    /**
-     * Deletes a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider
-     */
-    public void deleteCredential(Long userId, String provider) {
-        ensureUserExists(userId);
-        userCredentialManager.deleteByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Deletes a user and all associated credentials.
-     *
-     * @param id the user ID to delete
-     */
-    public void deleteById(Long id) {
-        ensureUserExists(id);
-        userCredentialManager.deleteAllByUserId(id);
-        userManager.deleteById(id);
-    }
-
-    private User ensureUserExists(Long userId) {
-        return userManager.findById(userId)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + userId));
-    }
-}
-
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java b/server/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
deleted file mode 100644
index e864a77..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
+++ /dev/null
@@ -1,219 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.*;
-import com.onixbyte.deltaforceguide.manager.ModificationManager;
-import com.onixbyte.deltaforceguide.manager.WebhookManager;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import org.yaml.snakeyaml.Yaml;
-
-import java.time.Duration;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.regex.Pattern;
-
-@Service
-public class WebhookService {
-
-    private static final Logger log = LoggerFactory.getLogger(WebhookService.class);
-    private static final String TRIGGER_LABEL = "weapon-mod";
-    private static final Duration DEDUP_TTL = Duration.ofHours(12);
-    private static final Pattern YAML_FENCE =
-            Pattern.compile("```ya?ml\\s*\\R(.*?)```", Pattern.DOTALL);
-
-    private final ModificationManager modificationManager;
-    private final RedisTemplate<String, Object> redisTemplate;
-    private final WebhookManager webhookManager;
-    private final Yaml yaml;
-
-    public WebhookService(
-            ModificationManager modificationManager,
-            RedisTemplate<String, Object> redisTemplate,
-            WebhookManager webhookManager
-    ) {
-        this.modificationManager = modificationManager;
-        this.redisTemplate = redisTemplate;
-        this.webhookManager = webhookManager;
-        this.yaml = new Yaml();
-    }
-
-    public void processIssueEvent(GitHubIssueRequest request) {
-        var issue = request.issue();
-        var repository = request.repository();
-        var sender = request.sender();
-
-        if (!isAllowedSender(sender)) {
-            log.info("Issue #{} sender={} not in allowed-users, skipping",
-                    issue.number(), sender != null ? sender.login() : "null");
-            return;
-        }
-
-        if (!hasTriggerLabel(issue.labels())) {
-            log.debug("Issue #{} lacks trigger label, skipping", issue.number());
-            return;
-        }
-
-        var dedupKey = "github:webhook:processed:%s:%d"
-                .formatted(repository.fullName(), issue.number());
-        var acquired = redisTemplate.opsForValue()
-                .setIfAbsent(dedupKey, "1", DEDUP_TTL);
-        if (acquired == null || !acquired) {
-            log.info("Issue #{} already processed, skipping", issue.number());
-            return;
-        }
-
-        var parsedYaml = extractYaml(issue.body());
-        if (parsedYaml == null) {
-            log.warn("No YAML block found in issue #{} body", issue.number());
-            return;
-        }
-
-        var data = yaml.<Map<String, Object>>load(parsedYaml);
-        if (data == null) {
-            log.warn("Empty YAML block in issue #{}", issue.number());
-            return;
-        }
-
-        if (data.containsKey("modifications")) {
-            processBatch(issue.number(), data);
-        } else {
-            processSingle(issue.number(), data);
-        }
-    }
-
-    private void processSingle(Long issueNumber, Map<String, Object> data) {
-        var request = mapToRequest(data);
-        log.info("Creating modification from issue #{}: name={}", issueNumber, request.name());
-        modificationManager.create(request);
-    }
-
-    @SuppressWarnings("unchecked")
-    private void processBatch(Long issueNumber, Map<String, Object> data) {
-        var list = (List<Map<String, Object>>) data.get("modifications");
-        if (list == null || list.isEmpty()) {
-            log.warn("Empty modifications list in issue #{}", issueNumber);
-            return;
-        }
-        var requests = list.stream()
-                .map(this::mapToRequest)
-                .toList();
-        log.info("Batch creating {} modifications from issue #{}", requests.size(), issueNumber);
-        modificationManager.batchCreate(requests);
-    }
-
-    private ModificationRequest mapToRequest(Map<String, Object> data) {
-        Long firearmId = modificationManager.resolveFirearmId(
-                toLong(data.get("firearmId")),
-                (String) data.get("firearmName"));
-        if (firearmId == null) {
-            throw new BizException(HttpStatus.BAD_REQUEST,
-                    "YAML must contain firearmId or firearmName");
-        }
-        String name = (String) data.get("name");
-        String code = (String) data.get("code");
-        List<String> tags = toStringList(data.get("tags"));
-        List<AccessoryRequest> accessories = mapAccessories(data.get("accessories"));
-        String note = (String) data.get("note");
-        String author = (String) data.get("author");
-        String videoUrl = (String) data.get("videoUrl");
-
-        return new ModificationRequest(firearmId, name, code, tags, accessories,
-                note, author, videoUrl);
-    }
-
-    private List<AccessoryRequest> mapAccessories(Object raw) {
-        if (!(raw instanceof List<?> list)) {
-            return new ArrayList<>();
-        }
-        var result = new ArrayList<AccessoryRequest>();
-        for (var item : list) {
-            if (item instanceof Map<?, ?> map) {
-                result.add(new AccessoryRequest(
-                        (String) map.get("slotName"),
-                        (String) map.get("accessoryName"),
-                        mapTunings(map.get("tunings"))
-                ));
-            }
-        }
-        return result;
-    }
-
-    private List<TuningRequest> mapTunings(Object raw) {
-        if (!(raw instanceof List<?> list)) {
-            return new ArrayList<>();
-        }
-        var result = new ArrayList<TuningRequest>();
-        for (var item : list) {
-            if (item instanceof Map<?, ?> map) {
-                result.add(new TuningRequest(
-                        (String) map.get("tuningName"),
-                        toDouble(map.get("tuningValue"))
-                ));
-            }
-        }
-        return result;
-    }
-
-    private List<String> toStringList(Object raw) {
-        if (raw instanceof List<?> list) {
-            return list.stream()
-                    .filter(String.class::isInstance)
-                    .map(String.class::cast)
-                    .toList();
-        }
-        return new ArrayList<>();
-    }
-
-    private boolean isAllowedSender(
-            GitHubWebhookSender sender
-    ) {
-        var allowedUsers = webhookManager.allowedUsers();
-        if (allowedUsers == null || allowedUsers.isEmpty()) {
-            return true;
-        }
-        if (sender == null || sender.login() == null) {
-            return false;
-        }
-        return allowedUsers.contains(sender.login());
-    }
-
-    private boolean hasTriggerLabel(List<GitHubWebhookLabel> labels) {
-        if (labels == null) {
-            return false;
-        }
-        return labels.stream().anyMatch(label -> TRIGGER_LABEL.equals(label.name()));
-    }
-
-    private String extractYaml(String body) {
-        if (body == null) {
-            return null;
-        }
-        var matcher = YAML_FENCE.matcher(body);
-        return matcher.find() ? matcher.group(1) : null;
-    }
-
-    private Long toLong(Object value) {
-        if (value instanceof Number num) {
-            return num.longValue();
-        }
-        if (value instanceof String s) {
-            return Long.parseLong(s);
-        }
-        return null;
-    }
-
-    private Double toDouble(Object value) {
-        if (value instanceof Number num) {
-            return num.doubleValue();
-        }
-        if (value instanceof String s) {
-            return Double.parseDouble(s);
-        }
-        return null;
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java
deleted file mode 100644
index 26f0112..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * Constants for HTTP cookie names used for authentication tokens.
- *
- * @author zihluwang
- */
-public class CookieName {
-
-    public static final String ACCESS_TOKEN = "AccessToken";
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java
deleted file mode 100644
index 9488536..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * Constants for supported authentication provider identifiers.
- *
- * @author zihluwang
- */
-public class CredentialProvider {
-
-    public static final String LOCAL = "LOCAL";
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
deleted file mode 100644
index 134408b..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import java.time.format.DateTimeFormatter;
-
-/**
- * Utility class providing predefined {@link DateTimeFormatter} instances for common date and
- * time patterns. These formatters can be used to parse and format {@code java.time} objects
- * consistently throughout an application.
- *
- * @author zihluwang
- */
-public class DateTimeFormatters {
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing full date and time with seconds, using
-     * the pattern "yyyy-MM-dd HH:mm:ss".
-     * <p>
-     * Example: "{@code 2023-10-27 15:30:45}"
-     */
-    public static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing dates only, using the
-     * pattern "yyyy-MM-dd".
-     * <p>
-     * Example: "{@code 2023-10-27}"
-     */
-    public static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing times only, using the
-     * pattern "HH:mm:ss".
-     * <p>
-     * Example: "{@code 15:30:45}"
-     */
-    public static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing year and month only, using the
-     * pattern "yyyy-MM".
-     * <p>
-     * Example: "{@code 2023-10}"
-     */
-    public static final DateTimeFormatter YEAR_MONTH_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM");
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java
deleted file mode 100644
index 05b9d58..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * This class lists the header names that GitHub sends in webhook requests.
- *
- * @author siujamo
- */
-public class GitHubWebhookHeader {
-
-    /**
-     * The unique identifier of the webhook.
-     */
-    public static final String HOOK_ID = "X-GitHub-Hook-ID";
-
-    /**
-     * The name of the event that triggered the delivery.
-     */
-    public static final String EVENT = "X-GitHub-Event";
-
-    /**
-     * A globally unique identifier (GUID) to identify the event.
-     */
-    public static final String DELIVERY = "X-GitHub-Delivery";
-
-    /**
-     * This header is sent if the webhook is configured with a {@code secret}. This is the HMAC hex
-     * digest of the request body, and is generated using the SHA-1 hash function and the secret as
-     * the HMAC {@code key}. {@code X-Hub-Signature} is provided for compatibility with
-     * existing integrations. We recommend that you use the more secure
-     * {@code X-Hub-Signature-256} instead.
-     */
-    public static final String SIGNATURE = "X-Hub-Signature";
-
-    /**
-     * This header is sent if the webhook is configured with a {@code secret}. This is the HMAC hex
-     * digest of the request body, and is generated using the SHA-256 hash function and the
-     * {@code secret} as the HMAC key. For more information, see <a href="https://docs.github.com/en/webhooks/using-webhooks/securing-your-webhooks"
-     * >Validating webhook deliveries</a>.
-     */
-    public static final String SIGNATURE_256 = "X-Hub-Signature-256";
-
-    /**
-     * This header will always have the prefix {@code GitHub-Hookshot/}.
-     */
-    public static final String USER_AGENT = "User-Agent";
-
-    /**
-     * The type of resource where the webhook was created.
-     */
-    public static final String INSTALLATION_TARGET_TYPE = "X-GitHub-Hook-Installation-Target-Type";
-
-    /**
-     * The unique identifier of the resource where the webhook was created.
-     */
-    public static final String INSTALLATION_TARGET_ID = "X-GitHub-Hook-Installation-Target-ID";
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
deleted file mode 100644
index ae47823..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
-
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.time.LocalTime;
-
-/**
- * Shared Jackson {@link com.fasterxml.jackson.databind.Module} instances for custom date/time
- * serialisation and deserialisation across the application.
- *
- * @author zihluwang
- */
-public class JacksonModules {
-
-    public static final SimpleModule DATE_TIME_MODULE = initialiseDateTimeModule();
-
-    private static SimpleModule initialiseDateTimeModule() {
-        var javaTimeModule = new JavaTimeModule();
-        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatters.DATE_TIME_FORMATTER));
-        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatters.DATE_TIME_FORMATTER));
-
-        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatters.DATE_FORMATTER));
-        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatters.DATE_FORMATTER));
-
-        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatters.TIME_FORMATTER));
-        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatters.TIME_FORMATTER));
-
-        return javaTimeModule;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java b/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
deleted file mode 100644
index 4e50c38..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
-
-/**
- * Singleton serialiser for Redis cache operations using
- * {@link GenericJackson2JsonRedisSerializer} with JavaTime module support.
- *
- * @author zihluwang
- */
-public class JacksonRedisSerialiser {
-
-    public static final GenericJackson2JsonRedisSerializer INSTANCE = initialiseSerializer();
-
-    private static GenericJackson2JsonRedisSerializer initialiseSerializer() {
-        var serializer = new GenericJackson2JsonRedisSerializer();
-
-        serializer.configure((configurer) -> {
-            configurer.registerModule(new JavaTimeModule());
-            configurer.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        });
-
-        return serializer;
-    }
-}
-
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java b/server/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java
deleted file mode 100644
index 1d576a5..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.utils;
-
-import java.time.Instant;
-import java.time.LocalDateTime;
-import java.time.ZoneId;
-
-/**
- * Utility class for date and time operations using system-default time zone.
- *
- * @author zihluwang
- */
-public class DateTimeUtil {
-
-    /**
-     * Convert a {@link LocalDateTime} to an {@link Instant} using the system-default time zone.
-     *
-     * @param ldt the local date-time to convert
-     * @return the corresponding instant
-     */
-    public static Instant asInstant(LocalDateTime ldt) {
-        return ldt.atZone(ZoneId.systemDefault())
-                .toInstant();
-    }
-}
diff --git a/server/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java b/server/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java
deleted file mode 100644
index ee31c22..0000000
--- a/server/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package com.onixbyte.deltaforceguide.wrapper;
-
-import jakarta.servlet.ReadListener;
-import jakarta.servlet.ServletInputStream;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletRequestWrapper;
-import org.springframework.util.StreamUtils;
-import java.io.BufferedReader;
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
-
-public class RepeatedlyReadRequestWrapper extends HttpServletRequestWrapper {
-
-    private final byte[] body;
-
-    public RepeatedlyReadRequestWrapper(HttpServletRequest request) throws IOException {
-        super(request);
-        this.body = StreamUtils.copyToByteArray(request.getInputStream());
-    }
-
-    @Override
-    public ServletInputStream getInputStream() {
-        final var byteArrayInputStream = new ByteArrayInputStream(body);
-        return new ServletInputStream() {
-            @Override
-            public boolean isFinished() {
-                return byteArrayInputStream.available() == 0;
-            }
-
-            @Override
-            public boolean isReady() {
-                return true;
-            }
-
-            @Override
-            public void setReadListener(ReadListener readListener) {
-            }
-
-            @Override
-            public int read() throws IOException {
-                return byteArrayInputStream.read();
-            }
-        };
-    }
-
-    @Override
-    public BufferedReader getReader() throws IOException {
-        return new BufferedReader(new InputStreamReader(this.getInputStream(), StandardCharsets.UTF_8));
-    }
-
-    public String getBodyString() {
-        return new String(body, StandardCharsets.UTF_8);
-    }
-}
diff --git a/settings.gradle.kts b/settings.gradle.kts
deleted file mode 100644
index 2b10ea5..0000000
--- a/settings.gradle.kts
+++ /dev/null
@@ -1,14 +0,0 @@
-pluginManagement {
-    repositories {
-        gradlePluginPortal()
-        mavenCentral()
-    }
-}
-
-dependencyResolutionManagement {
-    repositories {
-        mavenCentral()
-    }
-}
-
-rootProject.name = "delta-force-guide-server"
diff --git a/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java b/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java
deleted file mode 100644
index a23fb88..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/DeltaForceGuideApplication.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-/**
- * Entry point for the Delta Force Guide Server application.
- *
- * @author zihluwang
- */
-@SpringBootApplication
-public class DeltaForceGuideApplication {
-
-    public static void main(String[] args) {
-        SpringApplication.run(DeltaForceGuideApplication.class, args);
-    }
-
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java b/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java
deleted file mode 100644
index a7ad3f1..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/client/TokenClient.java
+++ /dev/null
@@ -1,75 +0,0 @@
-package com.onixbyte.deltaforceguide.client;
-
-import com.auth0.jwt.JWT;
-import com.auth0.jwt.JWTVerifier;
-import com.auth0.jwt.algorithms.Algorithm;
-import com.auth0.jwt.interfaces.DecodedJWT;
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.properties.TokenProperties;
-import com.onixbyte.deltaforceguide.utils.DateTimeUtil;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
-import java.time.LocalDateTime;
-
-/**
- * Client for generating and verifying JSON Web Tokens using the Auth0 java-jwt library.
- *
- * @author zihluwang
- */
-@Component
-public class TokenClient {
-
-    private final Algorithm algorithm;
-    private final TokenProperties tokenProperties;
-    private final JWTVerifier verifier;
-
-    /**
-     * Constructs a new TokenClient with the necessary algorithm and token properties.
-     *
-     * @param algorithm       the signing algorithm used to secure the JWT
-     * @param tokenProperties the configuration properties for the token, such as issuer and
-     *                        validity period
-     */
-    @Autowired
-    public TokenClient(
-            Algorithm algorithm,
-            TokenProperties tokenProperties,
-            JWTVerifier verifier
-    ) {
-        this.algorithm = algorithm;
-        this.tokenProperties = tokenProperties;
-        this.verifier = verifier;
-    }
-
-    /**
-     * Generate a JSON Web Token to the current user.
-     *
-     * @param user the current user for whom the token is being generated
-     * @return a JWT string
-     */
-    public String generateToken(User user) {
-        var issuedAt = LocalDateTime.now();
-        var expiresAt = issuedAt.plus(tokenProperties.validTime());
-
-        return JWT.create()
-                .withSubject(user.getUsername())
-                .withIssuer(tokenProperties.issuer())
-                .withIssuedAt(DateTimeUtil.asInstant(issuedAt))
-                .withExpiresAt(DateTimeUtil.asInstant(expiresAt))
-                .sign(algorithm);
-    }
-
-    /**
-     * Verify and decode token.
-     *
-     * @param token a JWT token
-     * @return information included in the given token
-     * @throws com.auth0.jwt.exceptions.JWTVerificationException if the token is invalid, such as
-     *                                                           expired, or not signed by
-     *                                                           specific server
-     */
-    public DecodedJWT verifyToken(String token) {
-        return verifier.verify(token);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
deleted file mode 100644
index 6bba2db..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/AppConfig.java
+++ /dev/null
@@ -1,35 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.interceptor.GitHubWebhookInterceptor;
-import com.onixbyte.deltaforceguide.interceptor.TrafficInterceptor;
-import com.onixbyte.deltaforceguide.properties.AppProperties;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-
-@Configuration
-@EnableConfigurationProperties(AppProperties.class)
-public class AppConfig implements WebMvcConfigurer {
-
-    private final TrafficInterceptor trafficInterceptor;
-
-    private final GitHubWebhookInterceptor gitHubWebhookInterceptor;
-
-    @Autowired
-    public AppConfig(
-            TrafficInterceptor trafficInterceptor,
-            GitHubWebhookInterceptor gitHubWebhookInterceptor
-    ) {
-        this.trafficInterceptor = trafficInterceptor;
-        this.gitHubWebhookInterceptor = gitHubWebhookInterceptor;
-    }
-
-    @Override
-    public void addInterceptors(InterceptorRegistry registry) {
-        registry.addInterceptor(trafficInterceptor);
-        registry.addInterceptor(gitHubWebhookInterceptor)
-                .addPathPatterns("/webhooks/github");
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
deleted file mode 100644
index 0502c4a..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/CacheConfig.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.shared.JacksonRedisSerialiser;
-import org.springframework.cache.annotation.EnableCaching;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.data.redis.cache.RedisCacheConfiguration;
-import org.springframework.data.redis.cache.RedisCacheManager;
-import org.springframework.data.redis.connection.RedisConnectionFactory;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
-import org.springframework.data.redis.serializer.RedisSerializationContext;
-import org.springframework.data.redis.serializer.RedisSerializer;
-
-import java.time.Duration;
-
-/**
- * Configuration class for Redis-based caching components.
- * <p>
- * This configuration class provides beans for Redis cache management and template operations
- * within the Helix application. It configures custom serialisation strategies using
- * {@link GenericJackson2JsonRedisSerializer} for values and string serialisation for keys,
- * ensuring optimal performance and compatibility with JSON-based data structures.
- * <p>
- * The configuration includes:
- * <ul>
- *   <li>Custom {@link RedisCacheManager} with JSON serialisation support</li>
- *   <li>Configured {@link RedisTemplate} for direct Redis operations</li>
- * </ul>
- *
- * @author zihluwang
- * @see RedisCacheManager
- * @see RedisTemplate
- * @see GenericJackson2JsonRedisSerializer
- * @since 1.0.0
- */
-@Configuration
-@EnableCaching
-public class CacheConfig {
-
-    /**
-     * Creates a custom Redis cache manager with JSON serialisation support.
-     * <p>
-     * This method configures a {@link RedisCacheManager} that uses string serialisation for cache
-     * keys and {@link GenericJackson2JsonRedisSerializer} for cache values. This setup ensures that
-     * complex objects can be stored and retrieved from Redis cache whilst maintaining readability
-     * and compatibility with JSON-based systems.
-     *
-     * @param connectionFactory the Redis connection factory used to establish connections
-     * @return a configured {@link RedisCacheManager} with custom serialisation settings
-     * @see RedisCacheManager
-     * @see GenericJackson2JsonRedisSerializer
-     * @see RedisSerializationContext
-     */
-    @Bean
-    public RedisCacheManager cacheManager(
-            RedisConnectionFactory connectionFactory
-    ) {
-        var _keySerializer = RedisSerializer.string();
-
-        var cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
-                .serializeKeysWith(RedisSerializationContext.SerializationPair
-                        .fromSerializer(_keySerializer))
-                .serializeValuesWith(RedisSerializationContext.SerializationPair
-                        .fromSerializer(JacksonRedisSerialiser.INSTANCE))
-                .entryTtl(Duration.ofMinutes(90L));
-
-        return RedisCacheManager.RedisCacheManagerBuilder
-                .fromConnectionFactory(connectionFactory)
-                .cacheDefaults(cacheConfiguration)
-                .build();
-    }
-
-    /**
-     * Creates a Redis template for direct Redis operations with custom serialisation.
-     * <p>
-     * This method configures a {@link RedisTemplate} that uses string serialisation for keys
-     * and {@link GenericJackson2JsonRedisSerializer} for values. This template provides low-level
-     * access to Redis operations whilst ensuring consistent serialisation strategies across
-     * the application.
-     * <p>
-     * The template is fully configured and ready for use after bean creation.
-     *
-     * @param connectionFactory the Redis connection factory used to establish connections
-     * @return a fully configured {@link RedisTemplate} for Redis operations
-     * @see RedisTemplate
-     * @see GenericJackson2JsonRedisSerializer
-     * @see RedisSerializer
-     */
-    @Bean
-    public RedisTemplate<String, Object> redisTemplate(
-            RedisConnectionFactory connectionFactory
-    ) {
-        var redisTemplate = new RedisTemplate<String, Object>();
-        redisTemplate.setConnectionFactory(connectionFactory);
-        redisTemplate.setKeySerializer(RedisSerializer.string());
-        redisTemplate.setValueSerializer(JacksonRedisSerialiser.INSTANCE);
-        redisTemplate.afterPropertiesSet();
-        return redisTemplate;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
deleted file mode 100644
index 1e13243..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/CorsConfig.java
+++ /dev/null
@@ -1,49 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.properties.CorsProperties;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.http.HttpMethod;
-import org.springframework.web.cors.CorsConfiguration;
-import org.springframework.web.cors.CorsConfigurationSource;
-import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
-
-import java.util.List;
-import java.util.stream.Stream;
-
-/**
- * Configuration for CORS (Cross-Origin Resource Sharing) policies.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableConfigurationProperties({CorsProperties.class})
-public class CorsConfig {
-
-    /**
-     * Creates the CORS configuration source with properties from configuration.
-     *
-     * @param properties the CORS configuration properties
-     * @return the CORS configuration source
-     */
-    @Bean
-    public CorsConfigurationSource corsConfigurationSource(
-            CorsProperties properties
-    ) {
-        var corsConfiguration = new CorsConfiguration();
-        corsConfiguration.setAllowCredentials(properties.allowCredentials());
-        corsConfiguration.setAllowedOrigins(List.of(properties.allowedOrigins()));
-        corsConfiguration.setAllowedHeaders(List.of(properties.allowedHeaders()));
-        corsConfiguration.setAllowedMethods(Stream.of(properties.allowedMethods())
-                .map(HttpMethod::name)
-                .toList());
-        corsConfiguration.setMaxAge(properties.maxAge());
-        corsConfiguration.setAllowPrivateNetwork(properties.allowPrivateNetwork());
-        corsConfiguration.setExposedHeaders(List.of(properties.exposedHeaders()));
-
-        var corsConfigurationSource = new UrlBasedCorsConfigurationSource();
-        corsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
-        return corsConfigurationSource;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java
deleted file mode 100644
index 893852a..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/FilterConfig.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.filter.WebhookFilter;
-import org.springframework.boot.web.servlet.FilterRegistrationBean;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-public class FilterConfig {
-
-    @Bean
-    public FilterRegistrationBean<WebhookFilter> webhookFilterBean(WebhookFilter webhookFilter) {
-        var registrationBean = new FilterRegistrationBean<WebhookFilter>();
-
-        registrationBean.setFilter(webhookFilter);
-        registrationBean.addUrlPatterns("/webhooks/*");
-        registrationBean.setOrder(1);
-
-        return registrationBean;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
deleted file mode 100644
index 895bcd1..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/JacksonConfig.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.onixbyte.deltaforceguide.shared.JacksonModules;
-import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * Configuration for Jackson JSON serialisation and deserialisation settings.
- *
- * @author zihluwang
- */
-@Configuration
-public class JacksonConfig {
-
-    @Bean
-    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomiser() {
-        return (builder) -> {
-            builder.modules(JacksonModules.DATE_TIME_MODULE);
-            builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        };
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
deleted file mode 100644
index 0e2ae74..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/MyBatisConfig.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import org.mybatis.spring.annotation.MapperScan;
-import org.springframework.context.annotation.Configuration;
-
-/**
- * Configuration for MyBatis SQL mapping framework integration.
- *
- * @author zihluwang
- */
-@Configuration
-@MapperScan(basePackages = {"com.onixbyte.deltaforceguide.mapper"})
-public class MyBatisConfig {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java b/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java
deleted file mode 100644
index 9f47fe1..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/OpenApiConfiguration.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import io.swagger.v3.oas.annotations.OpenAPIDefinition;
-import io.swagger.v3.oas.annotations.info.Contact;
-import io.swagger.v3.oas.annotations.info.Info;
-import io.swagger.v3.oas.annotations.info.License;
-import org.springframework.context.annotation.Configuration;
-
-@OpenAPIDefinition(
-        info = @Info(
-                title = "Delta Force Guide Server",
-                description = "API for managing Delta Force game firearm builds",
-                version = "1.3.4",
-                contact = @Contact(
-                        name = "Zihlu Wang",
-                        email = "zihlu.wang@onixbyte.com"
-                ),
-                license = @License(
-                        name = "MIT",
-                        url = "https://git.onixbyte.cn/onixbyte/delta-force-guide-server/-/raw/main/LICENCE"
-                )
-        )
-)
-@Configuration
-public class OpenApiConfiguration {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java
deleted file mode 100644
index b32a691..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/SecurityConfig.java
+++ /dev/null
@@ -1,96 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.auth0.jwt.JWT;
-import com.auth0.jwt.JWTVerifier;
-import com.auth0.jwt.algorithms.Algorithm;
-import com.onixbyte.deltaforceguide.filter.TokenAuthenticationFilter;
-import com.onixbyte.deltaforceguide.properties.CookieProperties;
-import com.onixbyte.deltaforceguide.properties.TokenProperties;
-import com.onixbyte.deltaforceguide.security.provider.UsernamePasswordAuthenticationProvider;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.security.authentication.ProviderManager;
-import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
-import org.springframework.security.config.http.SessionCreationPolicy;
-import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.security.web.SecurityFilterChain;
-import org.springframework.security.web.access.ExceptionTranslationFilter;
-import org.springframework.web.cors.CorsConfigurationSource;
-
-/**
- * Spring Security configuration defining authentication, authorisation, and filter chains.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableWebSecurity
-@EnableMethodSecurity
-@EnableConfigurationProperties({TokenProperties.class, CookieProperties.class})
-public class SecurityConfig {
-
-    /**
-     * Configures the HTTP security filter chain including endpoint authorisation and JWT filter.
-     *
-     * @param http the HTTP security builder
-     * @return the configured security filter chain
-     */
-    @Bean
-    public SecurityFilterChain securityFilterChain(
-            HttpSecurity httpSecurity,
-            CorsConfigurationSource corsConfigurationSource,
-            TokenAuthenticationFilter tokenAuthenticationFilter
-    ) throws Exception {
-        return httpSecurity
-                .cors((cors) -> cors
-                        .configurationSource(corsConfigurationSource))
-                .csrf(AbstractHttpConfigurer::disable)
-                .sessionManagement((customiser) -> customiser
-                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
-                .authorizeHttpRequests((customiser) -> customiser
-                        .anyRequest().permitAll()
-                )
-                .addFilterAfter(tokenAuthenticationFilter, ExceptionTranslationFilter.class)
-                .build();
-    }
-
-    /**
-     * Provides the BCrypt password encoder for credential hashing.
-     * @return the BCrypt password encoder
-     */
-    @Bean
-    public PasswordEncoder passwordEncoder() {
-        return new BCryptPasswordEncoder();
-    }
-
-    /**
-     * Provides the authentication manager for the security configuration.
-     *
-     * @return the authentication manager
-     */
-    @Bean
-    public AuthenticationManager authenticationManager(
-            UsernamePasswordAuthenticationProvider usernamePasswordAuthenticationProvider
-    ) {
-        return new ProviderManager(
-                usernamePasswordAuthenticationProvider
-        );
-    }
-
-    @Bean
-    public Algorithm algorithm(TokenProperties properties) {
-        return Algorithm.HMAC256(properties.secret());
-    }
-
-    @Bean
-    public JWTVerifier verifier(Algorithm algorithm, TokenProperties tokenProperties) {
-        return JWT.require(algorithm)
-                .withIssuer(tokenProperties.issuer())
-                .build();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
deleted file mode 100644
index 1dfe3ff..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/SpringDataConfig.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import org.springframework.context.annotation.Configuration;
-import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
-
-/**
- * Configuration for Spring Data JPA auditing and repository settings.
- *
- * @author zihluwang
- */
-@Configuration
-@EnableJpaRepositories(basePackages = {"com.onixbyte.deltaforceguide.repository"})
-public class SpringDataConfig {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java b/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java
deleted file mode 100644
index d9c5db7..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/config/WebhookConfig.java
+++ /dev/null
@@ -1,10 +0,0 @@
-package com.onixbyte.deltaforceguide.config;
-
-import com.onixbyte.deltaforceguide.properties.GitHubWebhookProperties;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-@EnableConfigurationProperties({GitHubWebhookProperties.class})
-public class WebhookConfig {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java
deleted file mode 100644
index db0f42e..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/AuthController.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.LoginRequest;
-import com.onixbyte.deltaforceguide.domain.dto.UserResponse;
-import com.onixbyte.deltaforceguide.client.TokenClient;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.AuthService;
-import com.onixbyte.deltaforceguide.service.CookieService;
-import com.onixbyte.deltaforceguide.shared.CookieName;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.ResponseEntity;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.time.Duration;
-import java.time.LocalDateTime;
-
-/**
- * REST controller for user authentication endpoints (login, logout).
- *
- * @author zihluwang
- */
-@Tag(name = "用户鉴权", description = "处理用户登录与退出功能")
-@RestController
-@RequestMapping("/auth")
-public class AuthController {
-
-    private final AuthService authService;
-    private final TokenClient tokenClient;
-    private final CookieService cookieService;
-
-    public AuthController(AuthService authService, TokenClient tokenClient, CookieService cookieService) {
-        this.authService = authService;
-        this.tokenClient = tokenClient;
-        this.cookieService = cookieService;
-    }
-
-    @Operation(description = "用户登录")
-    @PostMapping("/login")
-    public ResponseEntity<UserResponse> login(@Validated @RequestBody LoginRequest request) {
-        var user = authService.login(request);
-        var currentTime = LocalDateTime.now();
-        var accessToken = tokenClient.generateToken(user);
-        var accessTokenCookie = cookieService.buildCookie(CookieName.ACCESS_TOKEN, accessToken);
-        var cookieMaxAge = accessTokenCookie.getMaxAge();
-
-        return ResponseEntity.ok()
-                .header(HttpHeaders.SET_COOKIE, accessTokenCookie.toString())
-                .body(UserResponse.from(user, currentTime.plus(cookieMaxAge)));
-    }
-
-    @RequiresAuth
-    @Operation(description = "退出登录")
-    @PostMapping("/logout")
-    public ResponseEntity<Void> logout() {
-        var expiredCookie = cookieService.buildCookie(CookieName.ACCESS_TOKEN, "", Duration.ZERO);
-        return ResponseEntity.noContent()
-                .header(HttpHeaders.SET_COOKIE, expiredCookie.toString())
-                .build();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java
deleted file mode 100644
index 527e730..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/DailyPasswordController.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.service.DailyPasswordService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-/**
- * REST controller for retrieving daily-generated passwords.
- *
- * @author zihluwang
- */
-@Tag(name = "每日密码", description = "获取每日密码信息")
-@RestController
-@RequestMapping("/daily-passwords")
-public class DailyPasswordController {
-
-    private final DailyPasswordService dailyPasswordService;
-
-    public DailyPasswordController(DailyPasswordService dailyPasswordService) {
-        this.dailyPasswordService = dailyPasswordService;
-    }
-
-    @Operation(description = "获取当日的每日密码数据，该数据将被缓存一天")
-    @GetMapping
-    public DailyPasswordResponse getDailyPassword() {
-        return dailyPasswordService.getDailyPassword();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java
deleted file mode 100644
index 4843c2d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/FirearmController.java
+++ /dev/null
@@ -1,72 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.FirearmRequest;
-import com.onixbyte.deltaforceguide.domain.dto.FirearmResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.FirearmService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.validation.constraints.Max;
-import jakarta.validation.constraints.Min;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Sort;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.*;
-
-/**
- * REST controller for firearm CRUD operations.
- *
- * @author zihluwang
- */
-@Tag(name = "武器管理", description = "与武器有关的操作")
-@RestController
-@RequestMapping("/firearms")
-public class FirearmController {
-
-    private final FirearmService firearmService;
-
-    public FirearmController(FirearmService firearmService) {
-        this.firearmService = firearmService;
-    }
-
-    @Operation(description = "获取分页武器数据")
-    @Validated
-    @GetMapping
-    public PageResponse<FirearmResponse> pageQuery(
-            @RequestParam(defaultValue = "0") @Min(0) int page,
-            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
-            @RequestParam(defaultValue = "id") String sortBy,
-            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
-            @RequestParam(required = false) FirearmType type
-    ) {
-        return firearmService.pageQuery(type, PageRequest.of(page, size, Sort.by(direction, sortBy)));
-    }
-
-    @Operation(description = "获取指定武器的数据")
-    @GetMapping("/{id}")
-    public FirearmResponse queryById(@PathVariable Long id) {
-        return firearmService.queryById(id);
-    }
-
-    @RequiresAuth
-    @PostMapping
-    public FirearmResponse addFirearm(@Validated @RequestBody FirearmRequest request) {
-        return firearmService.addFirearm(request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "更新指定武器的数据")
-    @PutMapping("/{id}")
-    public FirearmResponse updateFirearm(@PathVariable Long id, @Validated @RequestBody FirearmRequest request) {
-        return firearmService.updateFirearm(id, request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "删除指定武器的数据")
-    @DeleteMapping("/{id}")
-    public void deleteFirearm(@PathVariable Long id) {
-        firearmService.deleteFirearm(id);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
deleted file mode 100644
index 580e1f9..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/GitHubWebhookController.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.GitHubIssueRequest;
-import com.onixbyte.deltaforceguide.service.WebhookService;
-import com.onixbyte.deltaforceguide.shared.GitHubWebhookHeader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-@RequestMapping("/webhooks/github")
-public class GitHubWebhookController {
-
-    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookController.class);
-
-    private final WebhookService webhookService;
-
-    public GitHubWebhookController(WebhookService webhookService) {
-        this.webhookService = webhookService;
-    }
-
-    @PostMapping
-    public ResponseEntity<Void> handleWebhook(
-            @RequestHeader(GitHubWebhookHeader.EVENT) String event,
-            @RequestBody GitHubIssueRequest request
-    ) {
-        if (!"issues".equals(event)) {
-            log.debug("Ignoring non-issue event: {}", event);
-            return ResponseEntity.ok().build();
-        }
-        if (!"opened".equals(request.action())) {
-            log.debug("Ignoring issue action: {}", request.action());
-            return ResponseEntity.ok().build();
-        }
-        webhookService.processIssueEvent(request);
-        return ResponseEntity.ok().build();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java b/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java
deleted file mode 100644
index 4edd154..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/GlobalExceptionHandler.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.ErrorResponse;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.ExceptionHandler;
-import org.springframework.web.bind.annotation.RestControllerAdvice;
-
-/**
- * Global exception handler that translates exceptions into standard error responses.
- *
- * @author zihluwang
- */
-@RestControllerAdvice
-public class GlobalExceptionHandler {
-
-    @ExceptionHandler(BizException.class)
-    public ResponseEntity<ErrorResponse> handleBizException(BizException exception) {
-        var status = exception.getStatus();
-        return ResponseEntity.status(status)
-                .body(new ErrorResponse(exception.getMessage()));
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java
deleted file mode 100644
index 7eaf94c..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/ModificationController.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.domain.dto.ModificationBatchCreateRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.security.annotation.RequiresAuth;
-import com.onixbyte.deltaforceguide.service.ModificationService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.Max;
-import jakarta.validation.constraints.Min;
-import jakarta.validation.constraints.Positive;
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Sort;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.PutMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.List;
-
-/**
- * REST controller for modification CRUD operations, including batch creation and deletion.
- *
- * @author zihluwang
- */
-@Tag(name = "改装管理", description = "对枪械改装的管理")
-@RestController
-@RequestMapping("/modifications")
-public class ModificationController {
-
-    private final ModificationService modificationService;
-
-    public ModificationController(ModificationService modificationService) {
-        this.modificationService = modificationService;
-    }
-
-    @Operation(description = "分页查询改装信息")
-    @Validated
-    @GetMapping
-    public PageResponse<ModificationResponse> pageQuery(
-            @RequestParam(defaultValue = "0") @Min(0) int page,
-            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
-            @RequestParam(required = false) @Positive Long firearmId,
-            @RequestParam(defaultValue = "id") String sortBy,
-            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
-            @RequestParam(required = false) List<String> tags
-    ) {
-        return modificationService.pageQuery(firearmId, tags, PageRequest.of(page, size, Sort.by(direction, sortBy)));
-    }
-
-    @Operation(description = "查询指定改装的信息")
-    @GetMapping("/{id}")
-    public ModificationResponse queryById(@PathVariable Long id) {
-        return modificationService.queryById(id);
-    }
-
-    @RequiresAuth
-    @Operation(description = "创建改装")
-    @PostMapping
-    public ModificationResponse create(@Valid @RequestBody ModificationRequest request) {
-        return modificationService.create(request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "批量创建改装")
-    @PostMapping("/batch")
-    public List<ModificationResponse> batchCreate(@Valid @RequestBody ModificationBatchCreateRequest request) {
-        return modificationService.batchCreate(request.modifications());
-    }
-
-    @RequiresAuth
-    @Operation(description = "修改指定改装")
-    @PutMapping("/{id}")
-    public ModificationResponse update(@PathVariable Long id, @Valid @RequestBody ModificationRequest request) {
-        return modificationService.update(id, request);
-    }
-
-    @RequiresAuth
-    @Operation(description = "删除指定改装")
-    @DeleteMapping("/{id}")
-    public void delete(@PathVariable Long id) {
-        modificationService.delete(id);
-    }
-
-    @RequiresAuth
-    @Operation(description = "批量删除改装")
-    @DeleteMapping("/batch-delete")
-    @Validated
-    public void batchDelete(@RequestParam List<@Positive Long> ids) {
-        modificationService.batchDelete(ids);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java
deleted file mode 100644
index b9f4e59..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/TagController.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-import com.onixbyte.deltaforceguide.service.ModificationService;
-
-import java.util.List;
-
-/**
- * REST controller for retrieving available modification tags.
- *
- * @author zihluwang
- */
-@Tag(name = "标签管理", description = "管理标签信息")
-@RestController
-@RequestMapping("/tags")
-public class TagController {
-
-    private final ModificationService modificationService;
-
-    public TagController(ModificationService modificationService) {
-        this.modificationService = modificationService;
-    }
-
-    @Operation(description = "查询指定武器或所有武器的标签")
-    @GetMapping
-    public List<String> getTags(@RequestParam(required = false) Long firearmId) {
-        return modificationService.findAllTags(firearmId);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java b/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java
deleted file mode 100644
index 67a08ef..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/controller/VersionController.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.controller;
-
-import com.onixbyte.deltaforceguide.service.AppService;
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@Tag(name = "版本信息")
-@RestController
-@RequestMapping("/versions")
-public class VersionController {
-
-    private final AppService appService;
-
-    public VersionController(AppService appService) {
-        this.appService = appService;
-    }
-
-    @Operation(description = "获取当前应用版本号")
-    @GetMapping
-    public String getVersion() {
-        return appService.getVersion();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java b/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java
deleted file mode 100644
index 8108db3..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/converter/FirearmTypeConverter.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.converter;
-
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import jakarta.persistence.AttributeConverter;
-import jakarta.persistence.Converter;
-
-/**
- * JPA attribute converter that maps {@link FirearmType} enum to/from its integer database representation.
- *
- * @author zihluwang
- */
-@Converter
-public class FirearmTypeConverter implements AttributeConverter<FirearmType, Integer> {
-
-    @Override
-    public Integer convertToDatabaseColumn(FirearmType attribute) {
-        return attribute == null ? null : attribute.getCode();
-    }
-
-    @Override
-    public FirearmType convertToEntityAttribute(Integer dbData) {
-        return FirearmType.fromCode(dbData);
-    }
-}
-
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java
deleted file mode 100644
index b94b61c..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryRequest.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotBlank;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Request DTO for creating or updating an accessory attached to a modification.
- *
- * @author zihluwang
- */
-public record AccessoryRequest(
-        @NotBlank(message = "插槽名称不能为空")
-        String slotName,
-        @NotBlank(message = "配件名称不能为空")
-        String accessoryName,
-        List<@Valid TuningRequest> tunings
-) {
-    public List<TuningRequest> tunings() {
-        return tunings == null ? new ArrayList<>() : tunings;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java
deleted file mode 100644
index ade3eac..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/AccessoryResponse.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-
-import java.util.List;
-
-/**
- * Response DTO for an accessory attached to a modification.
- *
- * @author zihluwang
- */
-public record AccessoryResponse(
-        String slotName,
-        String accessoryName,
-        List<TuningResponse> tunings
-) {
-    public static AccessoryResponse from(Accessory accessory) {
-        return new AccessoryResponse(
-                accessory.getSlotName(),
-                accessory.getAccessoryName(),
-                accessory.getTunings() == null
-                        ? List.of()
-                        : accessory.getTunings().stream().map(TuningResponse::from).toList()
-        );
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java
deleted file mode 100644
index edfa9c0..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPassword.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * DTO representing a single daily-generated password for a map.
- *
- * @author zihluwang
- */
-public record DailyPassword(
-        String mapName,
-        String password
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java
deleted file mode 100644
index 5e3c12f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordData.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import java.time.LocalDateTime;
-import java.util.List;
-
-/**
- * DTO containing daily password data including update information and password list.
- *
- * @author zihluwang
- */
-public record DailyPasswordData(
-        String updateDate,
-        Integer totalCount,
-        List<DailyPassword> passwords,
-        String source,
-        LocalDateTime lastUpdated,
-        Long timestamp
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java
deleted file mode 100644
index 9af994f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordMetadata.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * DTO holding metadata about the daily password source and update tracking.
- *
- * @author zihluwang
- */
-public record DailyPasswordMetadata(
-        String version,
-        String author
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java
deleted file mode 100644
index d3ce808..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/DailyPasswordResponse.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * Response DTO wrapping daily password data with metadata.
- *
- * @author zihluwang
- */
-public record DailyPasswordResponse(
-        String status,
-        String message,
-        DailyPasswordData data,
-        DailyPasswordMetadata metadata
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java
deleted file mode 100644
index 11879fc..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ErrorResponse.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-/**
- * Standard error response body returned on API failures.
- *
- * @author zihluwang
- */
-public record ErrorResponse(
-        String message
-) {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java
deleted file mode 100644
index 02fb855..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmRequest.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-
-/**
- * Request DTO for creating or updating a firearm.
- *
- * @author zihluwang
- */
-public record FirearmRequest(
-        String name,
-        FirearmType type,
-        String level,
-        String calibre,
-        Integer fireRate,
-        Integer armourDamage,
-        Integer bodyDamage,
-        String review
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java
deleted file mode 100644
index 0e9eaba..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/FirearmResponse.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-
-/**
- * Response DTO for a firearm record, including associated modifications.
- *
- * @author zihluwang
- */
-public record FirearmResponse(
-        Long id,
-        String name,
-        FirearmType type,
-        String level,
-        String calibre,
-        Integer fireRate,
-        Integer armourDamage,
-        Integer bodyDamage,
-        String review
-) {
-    public static FirearmResponse from(Firearm firearm) {
-        return new FirearmResponse(
-                firearm.getId(),
-                firearm.getName(),
-                firearm.getType(),
-                firearm.getLevel(),
-                firearm.getCalibre(),
-                firearm.getFireRate(),
-                firearm.getArmourDamage(),
-                firearm.getBodyDamage(),
-                firearm.getReview()
-        );
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java
deleted file mode 100644
index 8c4e1a6..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubIssueRequest.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubIssueRequest(
-        String action,
-        GitHubWebhookIssue issue,
-        GitHubWebhookRepository repository,
-        GitHubWebhookSender sender
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java
deleted file mode 100644
index 91263cc..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookIssue.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-import java.util.List;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookIssue(
-        String url,
-        Long id,
-        Long number,
-        String title,
-        String body,
-        List<GitHubWebhookLabel> labels
-) {
-
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java
deleted file mode 100644
index 33954ab..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookLabel.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookLabel(
-        String name
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java
deleted file mode 100644
index e3858d6..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookRepository.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookRepository(
-        String fullName
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java
deleted file mode 100644
index 416891e..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/GitHubWebhookSender.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.databind.annotation.JsonNaming;
-
-@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
-@JsonIgnoreProperties(ignoreUnknown = true)
-public record GitHubWebhookSender(
-        String login
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java
deleted file mode 100644
index 106d533..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/LoginRequest.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.NotBlank;
-
-/**
- * Login request containing principle (username/email) and credential (password).
- *
- * @author zihluwang
- */
-@Schema(description = "登录请求")
-public record LoginRequest(
-        @NotBlank(message = "登录名称不能为空")
-        @Schema(description = "用户名或电子邮箱", requiredMode = Schema.RequiredMode.REQUIRED)
-        String principle,
-        @NotBlank(message = "登录口令不能为空")
-        @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED)
-        String credential
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java
deleted file mode 100644
index c0aa59f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchCreateRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotEmpty;
-
-import java.util.List;
-
-/**
- * Request DTO for batch creation of modifications.
- *
- * @author zihluwang
- */
-public record ModificationBatchCreateRequest(
-        @NotEmpty(message = "批量创建列表不能为空")
-        List<@Valid ModificationRequest> modifications
-) {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java
deleted file mode 100644
index 4243895..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationBatchDeleteRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.constraints.NotEmpty;
-import jakarta.validation.constraints.Positive;
-
-import java.util.List;
-
-/**
- * Request DTO for batch deletion of modifications by ID.
- *
- * @author zihluwang
- */
-public record ModificationBatchDeleteRequest(
-        @NotEmpty(message = "批量删除ID列表不能为空")
-        List<@Positive(message = "ID必须为正数") Long> ids
-) {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java
deleted file mode 100644
index e4f6708..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationRequest.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-import jakarta.validation.constraints.Positive;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Request DTO for creating or updating a modification.
- *
- * @author zihluwang
- */
-public record ModificationRequest(
-        @NotNull(message = "武器ID不能为空")
-        @Positive(message = "武器ID必须为正数")
-        Long firearmId,
-        @NotBlank(message = "改装名称不能为空")
-        String name,
-        @NotBlank(message = "改装代码不能为空")
-        String code,
-        List<@NotBlank(message = "标签不能为空") String> tags,
-        List<@Valid AccessoryRequest> accessories,
-        String note,
-        String author,
-        String videoUrl
-) {
-    public List<String> tags() {
-        return tags == null ? new ArrayList<>() : tags;
-    }
-
-    public List<AccessoryRequest> accessories() {
-        return accessories == null ? new ArrayList<>() : accessories;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java
deleted file mode 100644
index aca6ef5..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/ModificationResponse.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-
-import java.util.List;
-
-/**
- * Response DTO for a modification record including accessories and tags.
- *
- * @author zihluwang
- */
-public record ModificationResponse(
-        Long id,
-        Long firearmId,
-        String name,
-        String code,
-        List<String> tags,
-        List<AccessoryResponse> accessories,
-        String note,
-        String author,
-        String videoUrl
-) {
-    public static ModificationResponse from(Modification modification) {
-        return new ModificationResponse(
-                modification.getId(),
-                modification.getFirearm().getId(),
-                modification.getName(),
-                modification.getCode(),
-                modification.getTags(),
-                modification.getAccessories() == null
-                        ? List.of()
-                        : modification.getAccessories().stream().map(AccessoryResponse::from).toList(),
-                modification.getNote(),
-                modification.getAuthor(),
-                modification.getVideoUrl()
-        );
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java
deleted file mode 100644
index 20738bd..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/PageResponse.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import org.springframework.data.domain.Page;
-
-import java.util.List;
-
-/**
- * Generic paginated response wrapper for list endpoints.
- *
- * @author zihluwang
- */
-public record PageResponse<T>(
-        List<T> items,
-        int page,
-        int size,
-        long totalElements,
-        int totalPages
-) {
-    public static <T> PageResponse<T> from(Page<T> source) {
-        return new PageResponse<>(
-                source.getContent(),
-                source.getNumber(),
-                source.getSize(),
-                source.getTotalElements(),
-                source.getTotalPages()
-        );
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java
deleted file mode 100644
index a180eb3..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningRequest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.NotNull;
-
-/**
- * Request DTO for a tuning adjustment on an accessory.
- *
- * @author zihluwang
- */
-public record TuningRequest(
-        @NotBlank(message = "调校项名称不能为空")
-        String tuningName,
-        @NotNull(message = "调校值不能为空")
-        Double tuningValue
-) {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java
deleted file mode 100644
index 405ecde..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/TuningResponse.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-
-/**
- * Response DTO for a tuning adjustment on an accessory.
- *
- * @author zihluwang
- */
-public record TuningResponse(
-        String tuningName,
-        Double tuningValue
-) {
-    public static TuningResponse from(Tuning tuning) {
-        return new TuningResponse(
-                tuning.getTuningName(),
-                tuning.getTuningValue()
-        );
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java b/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java
deleted file mode 100644
index 4a2d82d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/dto/UserResponse.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.dto;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-
-import java.time.LocalDateTime;
-
-/**
- * Response DTO for a user account, including associated credentials.
- *
- * @author zihluwang
- */
-public record UserResponse(
-        Long id,
-        String username,
-        String email,
-        LocalDateTime expiration
-) {
-    public static UserResponse from(User user, LocalDateTime expiration) {
-        return new UserResponse(
-                user.getId(),
-                user.getUsername(),
-                user.getEmail(),
-                expiration
-        );
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
deleted file mode 100644
index cde914d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Accessory.java
+++ /dev/null
@@ -1,72 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Objects;
-
-/**
- * Entity representing an accessory attached to a modification, stored as JSONB.
- *
- * @author zihluwang
- */
-public class Accessory {
-
-    private String slotName;
-
-    private String accessoryName;
-
-    private List<Tuning> tunings = new ArrayList<>();
-
-    public Accessory() {
-    }
-
-    public String getSlotName() {
-        return slotName;
-    }
-
-    public void setSlotName(String slotName) {
-        this.slotName = slotName;
-    }
-
-    public String getAccessoryName() {
-        return accessoryName;
-    }
-
-    public void setAccessoryName(String accessoryName) {
-        this.accessoryName = accessoryName;
-    }
-
-    public List<Tuning> getTunings() {
-        return tunings;
-    }
-
-    public void setTunings(List<Tuning> tunings) {
-        this.tunings = tunings;
-    }
-
-    public void addTuning(Tuning tuning) {
-        this.tunings.add(tuning);
-    }
-
-    public void removeTuning(Tuning tuning) {
-        this.tunings.remove(tuning);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (!(o instanceof Accessory accessory)) {
-            return false;
-        }
-        return Objects.equals(slotName, accessory.slotName)
-                && Objects.equals(accessoryName, accessory.accessoryName)
-                && Objects.equals(tunings, accessory.tunings);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(slotName, accessoryName, tunings);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java
deleted file mode 100644
index c71cee7..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Firearm.java
+++ /dev/null
@@ -1,232 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import com.onixbyte.deltaforceguide.domain.converter.FirearmTypeConverter;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import jakarta.persistence.CascadeType;
-import jakarta.persistence.Column;
-import jakarta.persistence.Convert;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-import jakarta.persistence.OneToMany;
-import jakarta.persistence.Table;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing a firearm in the Delta Force game.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "firearm")
-public class Firearm {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @Column(name = "name", nullable = false, length = 64)
-    private String name;
-
-    @Column(name = "type", nullable = false)
-    @Convert(converter = FirearmTypeConverter.class)
-    private FirearmType type;
-
-    @Column(name = "level", nullable = false)
-    private String level;
-
-    @Column(name = "review", columnDefinition = "TEXT")
-    private String review;
-
-    @Column(name = "calibre")
-    private String calibre;
-
-    @Column(name = "fire_rate")
-    private Integer fireRate;
-
-    @Column(name = "armour_damage")
-    private Integer armourDamage;
-
-    @Column(name = "body_damage")
-    private Integer bodyDamage;
-
-    @OneToMany(mappedBy = "firearm", cascade = CascadeType.ALL, orphanRemoval = true)
-    private List<Modification> modifications = new ArrayList<>();
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public FirearmType getType() {
-        return type;
-    }
-
-    public void setType(FirearmType type) {
-        this.type = type;
-    }
-
-    public String getLevel() {
-        return level;
-    }
-
-    public void setLevel(String level) {
-        this.level = level;
-    }
-
-    public String getReview() {
-        return review;
-    }
-
-    public void setReview(String review) {
-        this.review = review;
-    }
-
-    public String getCalibre() {
-        return calibre;
-    }
-
-    public void setCalibre(String calibre) {
-        this.calibre = calibre;
-    }
-
-    public Integer getFireRate() {
-        return fireRate;
-    }
-
-    public void setFireRate(Integer fireRate) {
-        this.fireRate = fireRate;
-    }
-
-    public Integer getArmourDamage() {
-        return armourDamage;
-    }
-
-    public void setArmourDamage(Integer armourDamage) {
-        this.armourDamage = armourDamage;
-    }
-
-    public Integer getBodyDamage() {
-        return bodyDamage;
-    }
-
-    public void setBodyDamage(Integer bodyDamage) {
-        this.bodyDamage = bodyDamage;
-    }
-
-    public List<Modification> getModifications() {
-        return modifications;
-    }
-
-    public void setModifications(List<Modification> modifications) {
-        this.modifications = modifications;
-    }
-
-    public void addModification(Modification modification) {
-        this.modifications.add(modification);
-        modification.setFirearm(this);
-    }
-
-    public void removeModification(Modification modification) {
-        this.modifications.remove(modification);
-        modification.setFirearm(null);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private String name;
-        private FirearmType type;
-        private String level;
-        private String review;
-        private String calibre;
-        private Integer fireRate;
-        private Integer armourDamage;
-        private Integer bodyDamage;
-        private List<Modification> modifications;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder name(String name) {
-            this.name = name;
-            return this;
-        }
-
-        public Builder type(FirearmType type) {
-            this.type = type;
-            return this;
-        }
-
-        public Builder level(String level) {
-            this.level = level;
-            return this;
-        }
-
-        public Builder review(String review) {
-            this.review = review;
-            return this;
-        }
-
-        public Builder calibre(String calibre) {
-            this.calibre = calibre;
-            return this;
-        }
-
-        public Builder fireRate(Integer fireRate) {
-            this.fireRate = fireRate;
-            return this;
-        }
-
-        public Builder armourDamage(Integer armourDamage) {
-            this.armourDamage = armourDamage;
-            return this;
-        }
-
-        public Builder bodyDamage(Integer bodyDamage) {
-            this.bodyDamage = bodyDamage;
-            return this;
-        }
-
-        public Builder modifications(List<Modification> modifications) {
-            this.modifications = modifications;
-            return this;
-        }
-
-        public Firearm build() {
-            Firearm firearm = new Firearm();
-            firearm.id = this.id;
-            firearm.name = this.name;
-            firearm.type = this.type;
-            firearm.level = this.level;
-            firearm.review = this.review;
-            firearm.calibre = this.calibre;
-            firearm.fireRate = this.fireRate;
-            firearm.armourDamage = this.armourDamage;
-            firearm.bodyDamage = this.bodyDamage;
-            firearm.modifications = this.modifications == null ? new ArrayList<>() : this.modifications;
-            return firearm;
-        }
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
deleted file mode 100644
index a1942f7..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Modification.java
+++ /dev/null
@@ -1,211 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import io.hypersistence.utils.hibernate.type.json.JsonType;
-import jakarta.persistence.*;
-import org.hibernate.annotations.Type;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing a firearm modification or build configuration.
- *
- * @author zihluwang
- */
-@Entity
-@Table(
-    name = "modification",
-    indexes = {
-        @Index(name = "idx_modification_firearm_id", columnList = "firearm_id")
-    }
-)
-public class Modification {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @ManyToOne(fetch = FetchType.LAZY, optional = false)
-    @JoinColumn(name = "firearm_id", nullable = false, foreignKey = @ForeignKey(name = "fk_modification_firearm"))
-    private Firearm firearm;
-
-    @Column(name = "name", nullable = false, length = 64)
-    private String name;
-
-    @Column(name = "code", nullable = false, length = 64)
-    private String code;
-
-    @Type(JsonType.class)
-    @Column(name = "tags", columnDefinition = "jsonb")
-    private List<String> tags = new ArrayList<>();
-
-    @Type(JsonType.class)
-    @Column(name = "accessories", columnDefinition = "jsonb")
-    private List<Accessory> accessories = new ArrayList<>();
-
-    @Column(name = "note", columnDefinition = "TEXT")
-    private String note;
-
-    @Column(name = "author", length = 64)
-    private String author;
-
-    @Column(name = "video_url", length = 512)
-    private String videoUrl;
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public Firearm getFirearm() {
-        return firearm;
-    }
-
-    public void setFirearm(Firearm firearm) {
-        this.firearm = firearm;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getCode() {
-        return code;
-    }
-
-    public void setCode(String code) {
-        this.code = code;
-    }
-
-    public List<String> getTags() {
-        return tags;
-    }
-
-    public void setTags(List<String> tags) {
-        this.tags = tags;
-    }
-
-    public List<Accessory> getAccessories() {
-        return accessories;
-    }
-
-    public void setAccessories(List<Accessory> accessories) {
-        this.accessories = accessories;
-    }
-
-    public void addAccessory(Accessory modificationAccessory) {
-        this.accessories.add(modificationAccessory);
-    }
-
-    public void removeAccessory(Accessory modificationAccessory) {
-        this.accessories.remove(modificationAccessory);
-    }
-
-    public String getNote() {
-        return note;
-    }
-
-    public void setNote(String note) {
-        this.note = note;
-    }
-
-    public String getAuthor() {
-        return author;
-    }
-
-    public void setAuthor(String author) {
-        this.author = author;
-    }
-
-    public String getVideoUrl() {
-        return videoUrl;
-    }
-
-    public void setVideoUrl(String videoUrl) {
-        this.videoUrl = videoUrl;
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private Firearm firearm;
-        private String name;
-        private String code;
-        private List<String> tags;
-        private List<Accessory> accessories;
-        private String note;
-        private String author;
-        private String videoUrl;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder firearm(Firearm firearm) {
-            this.firearm = firearm;
-            return this;
-        }
-
-        public Builder name(String name) {
-            this.name = name;
-            return this;
-        }
-
-        public Builder code(String code) {
-            this.code = code;
-            return this;
-        }
-
-        public Builder tags(List<String> tags) {
-            this.tags = tags;
-            return this;
-        }
-
-        public Builder accessories(List<Accessory> accessories) {
-            this.accessories = accessories;
-            return this;
-        }
-
-        public Builder note(String note) {
-            this.note = note;
-            return this;
-        }
-
-        public Builder author(String author) {
-            this.author = author;
-            return this;
-        }
-
-        public Builder videoUrl(String videoUrl) {
-            this.videoUrl = videoUrl;
-            return this;
-        }
-
-        public Modification build() {
-            Modification modification = new Modification();
-            modification.id = this.id;
-            modification.firearm = this.firearm;
-            modification.name = this.name;
-            modification.code = this.code;
-            modification.tags = this.tags == null ? new ArrayList<>() : this.tags;
-            modification.accessories = this.accessories == null ? new ArrayList<>() : this.accessories;
-            modification.note = this.note;
-            modification.author = this.author;
-            modification.videoUrl = this.videoUrl;
-            return modification;
-        }
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
deleted file mode 100644
index a4eb1f1..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/Tuning.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import java.util.Objects;
-
-/**
- * Entity representing a tuning adjustment for an accessory, stored as JSONB within Accessory.
- *
- * @author zihluwang
- */
-public class Tuning {
-
-    private String tuningName;
-    private Double tuningValue;
-
-    public Tuning() {
-    }
-
-    public String getTuningName() {
-        return tuningName;
-    }
-
-    public void setTuningName(String tuningName) {
-        this.tuningName = tuningName;
-    }
-
-    public Double getTuningValue() {
-        return tuningValue;
-    }
-
-    public void setTuningValue(Double tuningValue) {
-        this.tuningValue = tuningValue;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (!(o instanceof Tuning tuning)) {
-            return false;
-        }
-        return Objects.equals(tuningName, tuning.tuningName)
-                && Objects.equals(tuningValue, tuning.tuningValue);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(tuningName, tuningValue);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java
deleted file mode 100644
index d696b2d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/User.java
+++ /dev/null
@@ -1,119 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.CascadeType;
-import jakarta.persistence.Column;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-import jakarta.persistence.OneToMany;
-import jakarta.persistence.Table;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Entity representing an application user with authentication credentials.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "app_user")
-public class User {
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @Column(name = "username", nullable = false)
-    private String username;
-
-    @Column(name = "email", nullable = false)
-    private String email;
-
-    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
-    private List<UserCredential> credentials = new ArrayList<>();
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    public void setUsername(String username) {
-        this.username = username;
-    }
-
-    public String getEmail() {
-        return email;
-    }
-
-    public void setEmail(String email) {
-        this.email = email;
-    }
-
-    public List<UserCredential> getCredentials() {
-        return credentials;
-    }
-
-    public void setCredentials(List<UserCredential> credentials) {
-        this.credentials = credentials;
-    }
-
-    public void addCredential(UserCredential credential) {
-        this.credentials.add(credential);
-        credential.setUser(this);
-    }
-
-    public void removeCredential(UserCredential credential) {
-        this.credentials.remove(credential);
-        credential.setUser(null);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long id;
-        private String username;
-        private String email;
-        private List<UserCredential> credentials;
-
-        public Builder id(Long id) {
-            this.id = id;
-            return this;
-        }
-
-        public Builder username(String username) {
-            this.username = username;
-            return this;
-        }
-
-        public Builder email(String email) {
-            this.email = email;
-            return this;
-        }
-
-        public Builder credentials(List<UserCredential> credentials) {
-            this.credentials = credentials;
-            return this;
-        }
-
-        public User build() {
-            User user = new User();
-            user.id = this.id;
-            user.username = this.username;
-            user.email = this.email;
-            user.credentials = this.credentials == null ? new ArrayList<>() : this.credentials;
-            return user;
-        }
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java
deleted file mode 100644
index 2ecdd37..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredential.java
+++ /dev/null
@@ -1,143 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.Column;
-import jakarta.persistence.AttributeOverride;
-import jakarta.persistence.AttributeOverrides;
-import jakarta.persistence.EmbeddedId;
-import jakarta.persistence.Entity;
-import jakarta.persistence.FetchType;
-import jakarta.persistence.ForeignKey;
-import jakarta.persistence.JoinColumn;
-import jakarta.persistence.MapsId;
-import jakarta.persistence.ManyToOne;
-import jakarta.persistence.Table;
-
-/**
- * Entity representing a user credential linked to an authentication provider.
- *
- * @author zihluwang
- */
-@Entity
-@Table(name = "app_user_credential")
-public class UserCredential {
-
-	@EmbeddedId
-	@AttributeOverrides({
-		@AttributeOverride(name = "userId", column = @Column(name = "user_id")),
-		@AttributeOverride(name = "provider", column = @Column(name = "provider"))
-	})
-	private UserCredentialId id = new UserCredentialId();
-
-	@MapsId("userId")
-	@ManyToOne(fetch = FetchType.LAZY, optional = false)
-	@JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_user_credential_user"))
-	private User user;
-
-	@Column(name = "credential", nullable = false)
-	private String credential;
-
-	public UserCredentialId getId() {
-		return id;
-	}
-
-	public void setId(UserCredentialId id) {
-		this.id = id;
-	}
-
-	public User getUser() {
-		return user;
-	}
-
-	public void setUser(User user) {
-		this.user = user;
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setUserId(user == null ? null : user.getId());
-	}
-
-	public Long getUserId() {
-		return id == null ? null : id.getUserId();
-	}
-
-	public void setUserId(Long userId) {
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setUserId(userId);
-	}
-
-	public String getProvider() {
-		return id == null ? null : id.getProvider();
-	}
-
-	public void setProvider(String provider) {
-		if (this.id == null) {
-			this.id = new UserCredentialId();
-		}
-		this.id.setProvider(provider);
-	}
-
-	public String getCredential() {
-		return credential;
-	}
-
-	public void setCredential(String credential) {
-		this.credential = credential;
-	}
-
-	public static Builder builder() {
-		return new Builder();
-	}
-
-	public static class Builder {
-
-		private UserCredentialId id;
-		private User user;
-		private Long userId;
-		private String provider;
-		private String credential;
-
-		public Builder id(UserCredentialId id) {
-			this.id = id;
-			return this;
-		}
-
-		public Builder user(User user) {
-			this.user = user;
-			return this;
-		}
-
-		public Builder userId(Long userId) {
-			this.userId = userId;
-			return this;
-		}
-
-		public Builder provider(String provider) {
-			this.provider = provider;
-			return this;
-		}
-
-		public Builder credential(String credential) {
-			this.credential = credential;
-			return this;
-		}
-
-		public UserCredential build() {
-			UserCredential userCredential = new UserCredential();
-			userCredential.id = this.id == null ? new UserCredentialId() : this.id;
-			userCredential.user = this.user;
-			if (this.user != null) {
-				userCredential.id.setUserId(this.user.getId());
-			}
-			if (this.userId != null) {
-				userCredential.id.setUserId(this.userId);
-			}
-			if (this.provider != null) {
-				userCredential.id.setProvider(this.provider);
-			}
-			userCredential.credential = this.credential;
-			return userCredential;
-		}
-	}
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java b/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java
deleted file mode 100644
index 1e25f45..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/domain/entity/UserCredentialId.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.domain.entity;
-
-import jakarta.persistence.Embeddable;
-
-import java.io.Serializable;
-import java.util.Objects;
-
-/**
- * Composite key for the UserCredential entity, combining user ID and provider.
- *
- * @author zihluwang
- */
-@Embeddable
-public class UserCredentialId implements Serializable {
-
-    private Long userId;
-
-    private String provider;
-
-    public Long getUserId() {
-        return userId;
-    }
-
-    public void setUserId(Long userId) {
-        this.userId = userId;
-    }
-
-    public String getProvider() {
-        return provider;
-    }
-
-    public void setProvider(String provider) {
-        this.provider = provider;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        UserCredentialId that = (UserCredentialId) o;
-        return Objects.equals(userId, that.userId) && Objects.equals(provider, that.provider);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(userId, provider);
-    }
-
-    public static Builder builder() {
-        return new Builder();
-    }
-
-    public static class Builder {
-
-        private Long userId;
-        private String provider;
-
-        public Builder userId(Long userId) {
-            this.userId = userId;
-            return this;
-        }
-
-        public Builder provider(String provider) {
-            this.provider = provider;
-            return this;
-        }
-
-        public UserCredentialId build() {
-            UserCredentialId id = new UserCredentialId();
-            id.userId = this.userId;
-            id.provider = this.provider;
-            return id;
-        }
-    }
-}
-
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java b/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java
deleted file mode 100644
index 77bdbdb..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/enumeration/FirearmType.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.onixbyte.deltaforceguide.enumeration;
-
-/**
- * Enumeration of firearm types in the Delta Force game.
- * Each type is associated with an integer code used for database persistence.
- *
- * @author zihluwang
- */
-public enum FirearmType {
-
-    RIFLE(0),
-    SUB_MACHINE_GUN(1),
-    SHOTGUN(2),
-    LIGHT_MACHINE_GUN(3),
-    DESIGNATED_MARKSMAN_RIFLE(4),
-    SNIPER_RIFLE(5),
-    PISTOL(6),
-    SPECIAL(7);
-
-    private final int code;
-
-    FirearmType(int code) {
-        this.code = code;
-    }
-
-    public int getCode() {
-        return code;
-    }
-
-    /**
-     * Resolve a FirearmType from its integer code.
-     *
-      * @param code the integer code, may be null
-     * @return the corresponding FirearmType, or null if the code is null
-     * @throws IllegalArgumentException if the code does not match any known type
-     */
-    public static FirearmType fromCode(Integer code) {
-        if (code == null) {
-            return null;
-        }
-
-        for (FirearmType type : values()) {
-            if (type.code == code) {
-                return type;
-            }
-        }
-
-        throw new IllegalArgumentException("Unknown FirearmType code: " + code);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java b/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java
deleted file mode 100644
index d1b7ff2..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/exeption/BizException.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.onixbyte.deltaforceguide.exeption;
-
-import org.springframework.http.HttpStatus;
-
-/**
- * Custom runtime exception that carries an HTTP status code for API error responses.
- *
- * @author zihluwang
- */
-public class BizException extends RuntimeException {
-
-    /**
-     * The HTTP status code associated with this business exception.
-     * <p>
-     * This status code indicates the appropriate HTTP response status that should be returned to
-     * clients when this exception occurs. It enables consistent error handling across
-     * REST API endpoints.
-     */
-    private final HttpStatus status;
-
-    public BizException(String message) {
-        super(message);
-        this.status = HttpStatus.INTERNAL_SERVER_ERROR;
-    }
-
-    public BizException(HttpStatus status, String message) {
-        super(message);
-        this.status = status;
-    }
-
-    /**
-     * Returns the HTTP status code associated with this business exception.
-     *
-     * @return the HTTP status code that should be used in the error response
-     */
-    public HttpStatus getStatus() {
-        return status;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java b/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java
deleted file mode 100644
index e2068a6..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/filter/TokenAuthenticationFilter.java
+++ /dev/null
@@ -1,113 +0,0 @@
-package com.onixbyte.deltaforceguide.filter;
-
-import com.auth0.jwt.exceptions.JWTVerificationException;
-import com.onixbyte.deltaforceguide.client.TokenClient;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import com.onixbyte.deltaforceguide.service.CookieService;
-import jakarta.servlet.FilterChain;
-import jakarta.servlet.ServletException;
-import jakarta.servlet.http.Cookie;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.core.context.SecurityContextHolder;
-import org.springframework.stereotype.Component;
-import org.springframework.web.filter.OncePerRequestFilter;
-import org.springframework.web.servlet.HandlerExceptionResolver;
-import org.springframework.web.util.WebUtils;
-
-import java.io.IOException;
-import java.time.Duration;
-import java.time.Instant;
-import java.util.Objects;
-import java.util.Optional;
-
-/**
- * Servlet filter that extracts and validates JWT tokens from httpOnly cookies for each request.
- *
- * @author zihluwang
- */
-@Component
-public class TokenAuthenticationFilter extends OncePerRequestFilter {
-
-    private final static Logger log = LoggerFactory.getLogger(TokenAuthenticationFilter.class);
-    private static final Duration ACCESS_TOKEN_RENEW_THRESHOLD = Duration.ofMinutes(5);
-
-    private final UserManager userManager;
-    private final TokenClient tokenClient;
-    private final CookieService cookieService;
-    private final HandlerExceptionResolver handlerExceptionResolver;
-
-    public TokenAuthenticationFilter(
-            UserManager userManager,
-            TokenClient tokenClient,
-            CookieService cookieService,
-            HandlerExceptionResolver handlerExceptionResolver
-    ) {
-        this.userManager = userManager;
-        this.tokenClient = tokenClient;
-        this.cookieService = cookieService;
-        this.handlerExceptionResolver = handlerExceptionResolver;
-    }
-
-    /**
-     * Extracts JWT from httpOnly cookie, validates it, and sets the security context.
-     *
-     * @param request the HTTP request
-     * @param response the HTTP response
-     * @param filterChain the filter chain
-     */
-    @Override
-    protected void doFilterInternal(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull FilterChain filterChain
-    ) throws ServletException, IOException {
-        var token = Optional.ofNullable(WebUtils.getCookie(request, "AccessToken"))
-                .map(Cookie::getValue)
-                .orElse(null);
-        if (Objects.isNull(token) || token.isBlank()) {
-            filterChain.doFilter(request, response);
-            return;
-        }
-
-        try {
-            var decodedToken = tokenClient.verifyToken(token);
-            var username = decodedToken.getSubject();
-
-            var userWrapper = userManager.findByUsername(username);
-            if (userWrapper.isEmpty()) {
-                throw new BizException(HttpStatus.UNAUTHORIZED, "登录已过期，请重新登录");
-            }
-
-            var user = userWrapper.get();
-            var authentication = UsernamePasswordAuthentication.authenticated(user);
-            SecurityContextHolder.getContext().setAuthentication(authentication);
-
-            if (shouldRenew(decodedToken.getExpiresAt().toInstant())) {
-                var renewedToken = tokenClient.generateToken(user);
-                var renewedTokenCookie = cookieService.buildCookie("AccessToken", renewedToken);
-                response.addHeader(HttpHeaders.SET_COOKIE, renewedTokenCookie.toString());
-            }
-
-            filterChain.doFilter(request, response);
-        } catch (JWTVerificationException e) {
-            log.error("JWT verification failed.", e);
-            handlerExceptionResolver.resolveException(request, response, null,
-                    new BizException(HttpStatus.UNAUTHORIZED, "登录已过期，请重新登录"));
-        } catch (BizException e) {
-            handlerExceptionResolver.resolveException(request, response, null, e);
-        }
-    }
-
-    private boolean shouldRenew(Instant expiresAt) {
-        return Duration.between(Instant.now(), expiresAt).compareTo(ACCESS_TOKEN_RENEW_THRESHOLD) < 0;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java b/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java
deleted file mode 100644
index ddfd071..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/filter/WebhookFilter.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package com.onixbyte.deltaforceguide.filter;
-
-import com.onixbyte.deltaforceguide.wrapper.RepeatedlyReadRequestWrapper;
-import jakarta.servlet.*;
-import jakarta.servlet.http.HttpServletRequest;
-import org.springframework.stereotype.Component;
-
-import java.io.IOException;
-
-@Component
-public class WebhookFilter implements Filter {
-    @Override
-    public void doFilter(
-            ServletRequest request,
-            ServletResponse response,
-            FilterChain chain
-    ) throws IOException, ServletException {
-        var httpRequest = (HttpServletRequest) request;
-        var wrappedRequest = new RepeatedlyReadRequestWrapper(httpRequest);
-        chain.doFilter(wrappedRequest, response);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java b/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java
deleted file mode 100644
index c1b552a..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/interceptor/GitHubWebhookInterceptor.java
+++ /dev/null
@@ -1,83 +0,0 @@
-package com.onixbyte.deltaforceguide.interceptor;
-
-import com.onixbyte.crypto.util.CryptoUtil;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.WebhookManager;
-import com.onixbyte.deltaforceguide.shared.GitHubWebhookHeader;
-import com.onixbyte.deltaforceguide.wrapper.RepeatedlyReadRequestWrapper;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Component;
-import org.springframework.web.servlet.HandlerInterceptor;
-
-import java.nio.charset.StandardCharsets;
-import java.security.InvalidKeyException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-/**
- * Verifies GitHub webhook requests by validating the {@code X-Hub-Signature-256}
- * header against the configured secret using HMAC-SHA256.
- *
- * <p>Verification is skipped when no secret is configured. The signature format is
- * {@code sha256=<hex-digest>} as documented by GitHub.
- */
-@Component
-public class GitHubWebhookInterceptor implements HandlerInterceptor {
-
-    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookInterceptor.class);
-
-    private final WebhookManager webhookManager;
-
-    public GitHubWebhookInterceptor(WebhookManager webhookManager) {
-        this.webhookManager = webhookManager;
-    }
-
-    @Override
-    public boolean preHandle(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull Object handler
-    ) {
-        if (!(request instanceof RepeatedlyReadRequestWrapper req)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR,
-                    "Request body is not readable");
-        }
-
-        var secret = webhookManager.secret();
-        if (secret == null || secret.isBlank()) {
-            log.debug("No GitHub webhook secret configured, skipping signature verification");
-            return true;
-        }
-
-        var signatureHeader = req.getHeader(GitHubWebhookHeader.SIGNATURE_256);
-        if (signatureHeader == null || signatureHeader.isBlank()) {
-            log.warn("Missing {} header from ip={}",
-                    GitHubWebhookHeader.SIGNATURE_256, request.getRemoteAddr());
-            throw new BizException(HttpStatus.UNAUTHORIZED,
-                    "Missing webhook signature header");
-        }
-
-        var body = req.getBodyString();
-        try {
-            var computed = "sha256=" + CryptoUtil.hmacSha256(body, secret);
-
-            if (!MessageDigest.isEqual(
-                    computed.getBytes(StandardCharsets.UTF_8),
-                    signatureHeader.getBytes(StandardCharsets.UTF_8))) {
-                log.warn("Invalid webhook signature from ip={}", request.getRemoteAddr());
-                throw new BizException(HttpStatus.UNAUTHORIZED, "Invalid webhook signature");
-            }
-
-            return true;
-        } catch (NoSuchAlgorithmException | InvalidKeyException e) {
-            log.error("Failed to compute HMAC-SHA256", e);
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR,
-                    "Failed to verify webhook signature");
-        }
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java b/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java
deleted file mode 100644
index c7aac50..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/interceptor/TrafficInterceptor.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.onixbyte.deltaforceguide.interceptor;
-
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
-import org.jspecify.annotations.NonNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-import org.springframework.web.servlet.HandlerInterceptor;
-
-@Component
-public class TrafficInterceptor implements HandlerInterceptor {
-
-    private static final Logger log = LoggerFactory.getLogger(TrafficInterceptor.class);
-
-    @Override
-    public boolean preHandle(
-            @NonNull HttpServletRequest request,
-            @NonNull HttpServletResponse response,
-            @NonNull Object handler
-    ) {
-        var ip = resolveClientIp(request);
-        var method = request.getMethod();
-        var uri = request.getRequestURI();
-        var query = request.getQueryString();
-        var contentType = request.getContentType();
-        var contentLength = request.getContentLength();
-        var userAgent = request.getHeader("User-Agent");
-
-        log.debug("Request method={}, uri={}, query={}, ip={}, content-type={}, content-length={}, user-agent={}",
-                method, uri, query, ip, contentType, contentLength, userAgent);
-        return true;
-    }
-
-    private String resolveClientIp(HttpServletRequest request) {
-        var xForwardedFor = request.getHeader("X-Forwarded-For");
-        if (xForwardedFor != null && !xForwardedFor.isBlank()) {
-            return xForwardedFor.split(",")[0].trim();
-        }
-        var xRealIp = request.getHeader("X-Real-IP");
-        if (xRealIp != null && !xRealIp.isBlank()) {
-            return xRealIp.trim();
-        }
-        return request.getRemoteAddr();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java
deleted file mode 100644
index 378fe9b..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/AppManager.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.AppProperties;
-import org.springframework.stereotype.Component;
-
-@Component
-public class AppManager {
-
-    private final AppProperties appProperties;
-
-    public AppManager(AppProperties appProperties) {
-        this.appProperties = appProperties;
-    }
-
-    /**
-     * Retrieves the application version.
-     *
-     * @return the version string of this application
-     */
-    public String getVersion() {
-        return "v%s-%s by @%s".formatted(
-                appProperties.version(),
-                appProperties.channel(),
-                appProperties.vendor()
-        );
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java
deleted file mode 100644
index f6ef16f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/CookieManager.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.CookieProperties;
-import org.springframework.boot.web.server.Cookie;
-import org.springframework.stereotype.Component;
-
-import java.time.Duration;
-
-/**
- * Manager providing cookie construction operations with configurable properties.
- *
- * @author zihluwang
- */
-@Component
-public class CookieManager {
-
-    private final CookieProperties cookieProperties;
-
-    public CookieManager(CookieProperties cookieProperties) {
-        this.cookieProperties = cookieProperties;
-    }
-
-    public Boolean getHttpOnly() {
-        return cookieProperties.httpOnly();
-    }
-
-    public Boolean getSecure() {
-        return cookieProperties.secure();
-    }
-
-    public Cookie.SameSite getSameSite() {
-        return cookieProperties.sameSite();
-    }
-
-    public String getPath() {
-        return cookieProperties.path();
-    }
-
-    public Duration getMaxAge() {
-        return cookieProperties.maxAge();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java
deleted file mode 100644
index 6b6ac59..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/DailyPasswordManager.java
+++ /dev/null
@@ -1,85 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.shared.JacksonModules;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
-import org.springframework.stereotype.Component;
-import org.springframework.web.client.RestClient;
-
-import java.time.Duration;
-import java.time.LocalDate;
-import java.util.Objects;
-
-/**
- * Manager for daily password data access and caching coordination.
- *
- * @author zihluwang
- */
-@Component
-public class DailyPasswordManager {
-
-    private static final String CACHE_KEY_PREFIX = "daily-password:";
-
-    private final RestClient restClient;
-    private final RedisTemplate<String, Object> redisTemplate;
-
-    @Autowired
-    public DailyPasswordManager(
-            RestClient.Builder restClientBuilder,
-            RedisTemplate<String, Object> redisTemplate
-    ) {
-        var snakeCaseMapper = new ObjectMapper();
-        snakeCaseMapper.setPropertyNamingStrategy(
-                PropertyNamingStrategies.SnakeCaseStrategy.INSTANCE);
-        snakeCaseMapper.configure(
-                DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        snakeCaseMapper.registerModule(JacksonModules.DATE_TIME_MODULE);
-
-        this.restClient = restClientBuilder
-                .baseUrl("https://tmini.net/api")
-                .messageConverters(converters -> {
-                    converters.removeIf(
-                            MappingJackson2HttpMessageConverter.class::isInstance);
-                    converters.add(
-                            new MappingJackson2HttpMessageConverter(snakeCaseMapper));
-                })
-                .build();
-        this.redisTemplate = redisTemplate;
-    }
-
-    /**
-     * Retrieves the daily password from cache or generates a new one.
-     * @return the daily password response
-     */
-    public DailyPasswordResponse getDailyPassword() {
-        var key = CACHE_KEY_PREFIX + LocalDate.now();
-
-        var cached = redisTemplate.opsForValue().get(key);
-        if (cached != null) {
-            return (DailyPasswordResponse) cached;
-        }
-
-        var response = restClient.get()
-                .uri((uriBuilder) -> uriBuilder
-                        .path("/sjzmm")
-                        .queryParam("ckey", "")
-                        .queryParam("type", "json")
-                        .build())
-                .retrieve()
-                .body(DailyPasswordResponse.class);
-
-        if (Objects.isNull(response)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "暂无每日密码数据。");
-        }
-
-        redisTemplate.opsForValue().set(key, response, Duration.ofDays(1L));
-        return response;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java
deleted file mode 100644
index f7defab..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/ModificationManager.java
+++ /dev/null
@@ -1,130 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-import com.onixbyte.deltaforceguide.domain.dto.AccessoryRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.TuningRequest;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import com.onixbyte.deltaforceguide.repository.ModificationRepository;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Component;
-import org.springframework.transaction.annotation.Transactional;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Map;
-
-@Component
-public class ModificationManager {
-
-    private final ModificationRepository modificationRepository;
-    private final FirearmRepository firearmRepository;
-
-    public ModificationManager(
-            ModificationRepository modificationRepository,
-            FirearmRepository firearmRepository
-    ) {
-        this.modificationRepository = modificationRepository;
-        this.firearmRepository = firearmRepository;
-    }
-
-    @Transactional
-    public ModificationResponse create(ModificationRequest request) {
-        var firearm = firearmRepository.findById(request.firearmId())
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND,
-                        "Firearm not found: " + request.firearmId()));
-        var modification = toEntity(request, firearm);
-        return ModificationResponse.from(modificationRepository.save(modification));
-    }
-
-    @Transactional
-    public List<ModificationResponse> batchCreate(List<ModificationRequest> requests) {
-        var firearmIds = requests.stream()
-                .map(ModificationRequest::firearmId)
-                .collect(java.util.stream.Collectors.toCollection(LinkedHashSet::new));
-
-        Map<Long, Firearm> firearmMap = new HashMap<>();
-        firearmRepository.findAllById(firearmIds)
-                .forEach(firearm -> firearmMap.put(firearm.getId(), firearm));
-
-        if (firearmMap.size() != firearmIds.size()) {
-            var missing = firearmIds.stream()
-                    .filter((id) -> !firearmMap.containsKey(id))
-                    .toList();
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
-                    "Firearm not found: " + missing);
-        }
-
-        var modifications = requests.stream()
-                .map(req -> toEntity(req, firearmMap.get(req.firearmId())))
-                .toList();
-        return modificationRepository.saveAll(modifications)
-                .stream()
-                .map(ModificationResponse::from)
-                .toList();
-    }
-
-    public Long resolveFirearmId(Long firearmId, String firearmName) {
-        if (firearmId != null) {
-            return firearmId;
-        }
-        if (firearmName == null || firearmName.isBlank()) {
-            return null;
-        }
-        var matches = firearmRepository.findByName(firearmName);
-        if (matches.isEmpty()) {
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
-                    "Firearm not found by name: " + firearmName);
-        }
-        return matches.getFirst().getId();
-    }
-
-    private Modification toEntity(ModificationRequest request, Firearm firearm) {
-        return Modification.builder()
-                .firearm(firearm)
-                .name(request.name())
-                .code(request.code())
-                .tags(request.tags())
-                .accessories(toAccessories(request.accessories()))
-                .note(request.note())
-                .author(request.author())
-                .videoUrl(request.videoUrl())
-                .build();
-    }
-
-    private List<Accessory> toAccessories(List<AccessoryRequest> requests) {
-        if (requests == null) {
-            return new ArrayList<>();
-        }
-        return requests.stream().map(this::toAccessory).toList();
-    }
-
-    private Accessory toAccessory(AccessoryRequest request) {
-        var accessory = new Accessory();
-        accessory.setSlotName(request.slotName());
-        accessory.setAccessoryName(request.accessoryName());
-        accessory.setTunings(toTunings(request.tunings()));
-        return accessory;
-    }
-
-    private List<Tuning> toTunings(List<TuningRequest> requests) {
-        if (requests == null) {
-            return new ArrayList<>();
-        }
-        return requests.stream().map(this::toTuning).toList();
-    }
-
-    private Tuning toTuning(TuningRequest request) {
-        var tuning = new Tuning();
-        tuning.setTuningName(request.tuningName());
-        tuning.setTuningValue(request.tuningValue());
-        return tuning;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java
deleted file mode 100644
index d77c687..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/UserCredentialManager.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.repository.UserCredentialRepository;
-import org.springframework.stereotype.Component;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Manager for user credential persistence and authentication data access.
- *
- * @author zihluwang
- */
-@Component
-public class UserCredentialManager {
-
-    private final UserCredentialRepository userCredentialRepository;
-
-    public UserCredentialManager(UserCredentialRepository userCredentialRepository) {
-        this.userCredentialRepository = userCredentialRepository;
-    }
-
-    /**
-     * Finds all credentials belonging to a specific user.
-     *
-     * @param userId the user ID
-     * @return list of matching credentials
-     */
-    public List<UserCredential> findAllByUserId(Long userId) {
-        return userCredentialRepository.findAllByUserId(userId);
-    }
-
-    /**
-     * Finds a credential for a specific user and provider combination.
-     *
-     * @param userId the user ID
-     * @param provider the authentication provider
-     * @return the matching credential, if found
-     */
-    public Optional<UserCredential> findByUserIdAndProvider(Long userId, String provider) {
-        return userCredentialRepository.findByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Persists a new or updated credential.
-     *
-     * @param userCredential the credential to save
-     * @return the saved credential
-     */
-    public UserCredential save(UserCredential userCredential) {
-        return userCredentialRepository.save(userCredential);
-    }
-
-    /**
-     * Deletes a credential for a specific user and provider.
-     *
-     * @param userId the user ID
-     * @param provider the authentication provider
-     */
-    public void deleteByUserIdAndProvider(Long userId, String provider) {
-        userCredentialRepository.deleteByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Deletes all credentials belonging to a user.
-     *
-     * @param userId the user ID
-     */
-    public void deleteAllByUserId(Long userId) {
-        userCredentialRepository.deleteAllByUserId(userId);
-    }
-}
-
-
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java
deleted file mode 100644
index d63c0f7..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/UserManager.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.repository.UserRepository;
-import org.springframework.stereotype.Component;
-import org.springframework.transaction.annotation.Transactional;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Manager for user entity persistence and query operations.
- *
- * @author zihluwang
- */
-@Component
-public class UserManager {
-
-    private final UserRepository userRepository;
-
-    public UserManager(UserRepository userRepository) {
-        this.userRepository = userRepository;
-    }
-
-    /**
-     * Finds a user by their ID.
-     *
-     * @param id the user ID
-     * @return the matching user, if found
-     */
-    public Optional<User> findById(Long id) {
-        return userRepository.findById(id);
-    }
-
-    /**
-     * Retrieves all registered users.
-     * @return list of all users
-     */
-    public List<User> findAll() {
-        return userRepository.findAll();
-    }
-
-    /**
-     * Finds a user by their username.
-     *
-     * @param username the username to search for
-     * @return the matching user, if found
-     */
-    public Optional<User> findByUsername(String username) {
-        return userRepository.findByUsername(username);
-    }
-
-    @Transactional(readOnly = true)
-    public Optional<User> findByEmail(String email) {
-        return userRepository.findByEmail(email);
-    }
-
-    /**
-     * Persists a new or updated user.
-     *
-     * @param user the user to save
-     * @return the saved user
-     */
-    public User save(User user) {
-        return userRepository.save(user);
-    }
-
-    /**
-     * Deletes a user by their ID.
-     *
-     * @param id the user ID to delete
-     */
-    public void deleteById(Long id) {
-        userRepository.deleteById(id);
-    }
-
-    /**
-     * Finds a user by their username or email address.
-     *
-     * @param principal the username or email to search for
-     * @return the matching user, if found
-     */
-    public Optional<User> findByUsernameOrEmail(String principal) {
-        return userRepository.findByUsernameOrEmail(principal);
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java b/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java
deleted file mode 100644
index 21c5b52..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/manager/WebhookManager.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.manager;
-
-import com.onixbyte.deltaforceguide.properties.GitHubWebhookProperties;
-import org.springframework.stereotype.Component;
-
-import java.util.List;
-
-@Component
-public class WebhookManager {
-
-    private final GitHubWebhookProperties gitHubWebhookProperties;
-
-    public WebhookManager(GitHubWebhookProperties gitHubWebhookProperties) {
-        this.gitHubWebhookProperties = gitHubWebhookProperties;
-    }
-
-    public String secret() {
-        return gitHubWebhookProperties.secret();
-    }
-
-    public List<String> allowedUsers() {
-        return gitHubWebhookProperties.allowedUsers();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java
deleted file mode 100644
index b13bca2..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/properties/AppProperties.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-@ConfigurationProperties(prefix = "app.common")
-public record AppProperties(
-        String version,
-        String channel,
-        String vendor
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java
deleted file mode 100644
index 0cfde08..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/properties/CookieProperties.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.boot.context.properties.bind.DefaultValue;
-import org.springframework.boot.web.server.Cookie;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for HTTP cookies used in authentication, prefixed with "app.cookie".
- *
- * @param httpOnly  whether the cookie is httpOnly
- * @param secure    whether the cookie is secure
- * @param path      the cookie path
- * @param maxAge    the maximum age of the cookie
- * @param sameSite  the SameSite policy for the cookie
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.cookie")
-public record CookieProperties(
-        @DefaultValue("true") Boolean httpOnly,
-        @DefaultValue("true") Boolean secure,
-        @DefaultValue("/") String path,
-        @DefaultValue("PT2H") Duration maxAge,
-        @DefaultValue("LAX") Cookie.SameSite sameSite
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
deleted file mode 100644
index 193640f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/properties/CorsProperties.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.boot.context.properties.bind.DefaultValue;
-import org.springframework.http.HttpMethod;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for CORS settings, prefixed with "app.cors".
- *
- * @param allowedHeaders      headers allowed in CORS requests
- * @param allowedMethods      HTTP methods allowed in CORS requests
- * @param allowedOrigins      origins permitted to make cross-origin requests
- * @param allowCredentials    whether credentials are allowed in CORS requests
- * @param allowPrivateNetwork whether private network access is permitted
- * @param maxAge              how long the CORS preflight response may be cached
- * @param exposedHeaders      headers exposed to the client in CORS responses
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.cors")
-public record CorsProperties(
-        @DefaultValue({"Content-Type", "Authorization"})
-        String[] allowedHeaders,
-        @DefaultValue({"GET", "POST", "PUT", "PATCH", "DELETE"})
-        HttpMethod[] allowedMethods,
-        String[] allowedOrigins,
-        boolean allowCredentials,
-        boolean allowPrivateNetwork,
-        @DefaultValue("PT2H")
-        Duration maxAge,
-        @DefaultValue({"Content-Type", "Authorization"})
-        String[] exposedHeaders
-) {
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java
deleted file mode 100644
index 673051a..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/properties/GitHubWebhookProperties.java
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-import java.util.List;
-
-@ConfigurationProperties(prefix = "app.webhook.github")
-public record GitHubWebhookProperties(
-        String secret,
-        List<String> allowedUsers
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java b/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java
deleted file mode 100644
index 74c693c..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/properties/TokenProperties.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package com.onixbyte.deltaforceguide.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-
-import java.time.Duration;
-
-/**
- * Configuration properties for JWT token generation and validation, prefixed with "app.jwt".
- *
- * @param issuer    the JWT issuer claim
- * @param secret    the signing secret for JWT tokens
- * @param validTime the duration for which a token remains valid
- * @author zihluwang
- */
-@ConfigurationProperties(prefix = "app.jwt")
-public record TokenProperties(
-        String issuer,
-        String secret,
-        Duration validTime
-) {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java b/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java
deleted file mode 100644
index 46c84b9..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/repository/FirearmRepository.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-
-/**
- * Spring Data JPA repository for {@link Firearm} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface FirearmRepository extends JpaRepository<Firearm, Long> {
-
-	Page<Firearm> findAllByType(FirearmType type, Pageable pageable);
-
-	List<Firearm> findByName(String name);
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java b/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java
deleted file mode 100644
index 3d9fcc0..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/repository/ModificationRepository.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import org.jspecify.annotations.NonNull;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link Modification} entity operations,
- * including native JSONB tag filtering for Postgres.
- *
- * @author zihluwang
- */
-@Repository
-public interface ModificationRepository extends JpaRepository<Modification, Long> {
-
-    @EntityGraph(attributePaths = {"firearm"})
-    Page<Modification> findAllBy(Pageable pageable);
-
-    @EntityGraph(attributePaths = {"firearm"})
-    Page<Modification> findAllByFirearm_Id(Long firearmId, Pageable pageable);
-
-    @Override
-    @EntityGraph(attributePaths = {"firearm"})
-    @NonNull
-    Optional<Modification> findById(@NonNull Long id);
-
-    /**
-     * Page query modifications with optional firearm and JSONB tag filtering.
-     *
-     * @param firearmId optional firearm ID filter (nullable)
-     * @param tagsJson  optional JSON array of tags to match via Postgres {@code @>} operator (nullable)
-     * @param pageable  pagination information
-     * @return a page of matching modifications
-     */
-    @Query(value = """
-            SELECT * FROM modification m
-            WHERE (:firearmId IS NULL OR m.firearm_id = :firearmId)
-              AND (CAST(:tagsJson AS text) IS NULL OR cast(m.tags as jsonb) @> cast(CAST(:tagsJson AS text) as jsonb))
-            """,
-            countQuery = """
-            SELECT count(*) FROM modification m
-            WHERE (:firearmId IS NULL OR m.firearm_id = :firearmId)
-              AND (CAST(:tagsJson AS text) IS NULL OR cast(m.tags as jsonb) @> cast(CAST(:tagsJson AS text) as jsonb))
-            """,
-            nativeQuery = true)
-    Page<Modification> pageQueryByFirearmAndTags(@Param("firearmId") Long firearmId, @Param("tagsJson") String tagsJson, Pageable pageable);
-
-    /**
-     * Retrieve all distinct tag values from modifications, optionally filtered by firearm.
-     *
-     * @param firearmId optional firearm ID filter (nullable)
-     * @return list of distinct tag strings
-     */
-    @Query(value = "SELECT DISTINCT jsonb_array_elements_text(cast(tags as jsonb)) FROM modification WHERE (:firearmId IS NULL OR firearm_id = :firearmId)", nativeQuery = true)
-    List<String> findAllTags(@Param("firearmId") Long firearmId);
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java b/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java
deleted file mode 100644
index 53776e3..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/repository/UserCredentialRepository.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.domain.entity.UserCredentialId;
-import org.springframework.data.jpa.repository.Modifying;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link UserCredential} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface UserCredentialRepository extends JpaRepository<UserCredential, UserCredentialId> {
-
-    /**
-     * Find all credentials belonging to a given user.
-     *
-     * @param userId the user ID
-     * @return list of matching credentials
-     */
-    @EntityGraph(attributePaths = {"user"})
-    @Query("""
-            select uc
-            from UserCredential uc
-            where uc.user.id = :userId
-            """)
-    List<UserCredential> findAllByUserId(@Param("userId") Long userId);
-
-    /**
-     * Find a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider identifier
-     * @return an optional containing the matching credential, or empty if not found
-     */
-    @EntityGraph(attributePaths = {"user"})
-    @Query("""
-            select uc
-            from UserCredential uc
-            where uc.user.id = :userId
-              and uc.id.provider = :provider
-            """)
-    Optional<UserCredential> findByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
-
-    /**
-     * Delete a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider identifier
-     */
-    @Modifying
-    @Query("""
-            delete from UserCredential uc
-            where uc.user.id = :userId
-              and uc.id.provider = :provider
-            """)
-    void deleteByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
-
-    /**
-     * Delete all credentials for a given user.
-     *
-     * @param userId the user ID
-     */
-    @Modifying
-    @Query("""
-            delete from UserCredential uc
-            where uc.user.id = :userId
-            """)
-    void deleteAllByUserId(@Param("userId") Long userId);
-}
-
-
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java b/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java
deleted file mode 100644
index 7a0a363..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/repository/UserRepository.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package com.onixbyte.deltaforceguide.repository;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import org.jspecify.annotations.NonNull;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
-import org.springframework.stereotype.Repository;
-
-import java.util.Optional;
-
-/**
- * Spring Data JPA repository for {@link User} entity operations.
- *
- * @author zihluwang
- */
-@Repository
-public interface UserRepository extends JpaRepository<User, Long> {
-
-    @Override
-    @EntityGraph(attributePaths = {"credentials"})
-    @NonNull
-    Optional<User> findById(@NonNull Long id);
-
-    @EntityGraph(attributePaths = {"credentials"})
-    Optional<User> findByUsername(String username);
-
-    @EntityGraph(attributePaths = {"credentials"})
-    Optional<User> findByEmail(String email);
-
-    boolean existsByUsername(String username);
-
-    boolean existsByEmail(String email);
-
-    /**
-     * Find a user by either username or email.
-     *
-     * @param principal the username or email to search for
-     * @return an optional containing the matching user, or empty if not found
-     */
-    @EntityGraph(attributePaths = {"credentials"})
-    @Query("""
-            select u
-            from User u
-            where u.username = :principal
-               or u.email = :principal
-            """)
-    Optional<User> findByUsernameOrEmail(@Param("principal") String principal);
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java b/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java
deleted file mode 100644
index 9b6b014..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/security/annotation/RequiresAuth.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.onixbyte.deltaforceguide.security.annotation;
-
-import org.springframework.security.access.prepost.PreAuthorize;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Annotation to mark controller endpoints that require authentication.
- *
- * @author zihluwang
- */
-@Target({ElementType.METHOD, ElementType.TYPE})
-@Retention(RetentionPolicy.RUNTIME)
-@PreAuthorize("isAuthenticated()")
-public @interface RequiresAuth {
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java b/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java
deleted file mode 100644
index 9bd2ae3..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/security/authentication/UsernamePasswordAuthentication.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package com.onixbyte.deltaforceguide.security.authentication;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.CredentialsContainer;
-import org.springframework.security.core.GrantedAuthority;
-
-import java.util.Collection;
-import java.util.List;
-
-/**
- * Custom authentication token for username/password-based login flows.
- *
- * @author zihluwang
- */
-public class UsernamePasswordAuthentication implements Authentication, CredentialsContainer {
-    private final String username;
-    private String password;
-    private boolean authenticated;
-    private User user;
-
-    private UsernamePasswordAuthentication(String username, String password, boolean authenticated, User user) {
-        this.username = username;
-        this.password = password;
-        this.authenticated = authenticated;
-        this.user = user;
-    }
-
-    public static UsernamePasswordAuthentication unauthenticated(String username, String password) {
-        return new UsernamePasswordAuthentication(username, password, false, null);
-    }
-
-    public static UsernamePasswordAuthentication authenticated(User user) {
-        return new UsernamePasswordAuthentication(user.getUsername(), null, true, user);
-    }
-
-    @Override
-    public Collection<? extends GrantedAuthority> getAuthorities() {
-        return List.of();
-    }
-
-    @Override
-    public String getCredentials() {
-        return password;
-    }
-
-    @Override
-    public User getDetails() {
-        return user;
-    }
-
-    @Override
-    public String getPrincipal() {
-        return username;
-    }
-
-    @Override
-    public boolean isAuthenticated() {
-        return authenticated;
-    }
-
-    @Override
-    public void setAuthenticated(boolean authenticated) throws IllegalArgumentException {
-        this.authenticated = authenticated;
-    }
-
-    @Override
-    public String getName() {
-        return username;
-    }
-
-    @Override
-    public void eraseCredentials() {
-        this.password = null;
-    }
-
-    public void setDetails(User user) {
-        this.user = user;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java b/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java
deleted file mode 100644
index 01e6baa..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/security/provider/UsernamePasswordAuthenticationProvider.java
+++ /dev/null
@@ -1,100 +0,0 @@
-package com.onixbyte.deltaforceguide.security.provider;
-
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import com.onixbyte.deltaforceguide.repository.UserCredentialRepository;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import com.onixbyte.deltaforceguide.shared.CredentialProvider;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.domain.Example;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.authentication.AuthenticationProvider;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.AuthenticationException;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.stereotype.Component;
-
-/**
- * Authentication provider that validates username/password credentials against stored BCrypt hashes.
- *
- * @author zihluwang
- */
-@Component
-public class UsernamePasswordAuthenticationProvider implements AuthenticationProvider {
-
-    private static final Logger log = LoggerFactory.getLogger(UsernamePasswordAuthenticationProvider.class);
-    private final UserManager userManager;
-    private final PasswordEncoder passwordEncoder;
-    private final UserCredentialRepository userCredentialRepository;
-
-    @Autowired
-    public UsernamePasswordAuthenticationProvider(
-            UserManager userManager,
-            PasswordEncoder passwordEncoder,
-            UserCredentialRepository userCredentialRepository
-    ) {
-        this.userManager = userManager;
-        this.passwordEncoder = passwordEncoder;
-        this.userCredentialRepository = userCredentialRepository;
-    }
-
-    /**
-     * Validates the username/password credentials against stored BCrypt hashes.
-     *
-     * @param authentication the authentication request object
-     * @return a fully authenticated object including user details
-     */
-    @Override
-    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
-        if (!(authentication instanceof UsernamePasswordAuthentication usernamePasswordAuthentication)) {
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "用户认证失败，请稍后再试。");
-        }
-
-        // get userContainer from database
-        var userContainer = userManager.findByUsernameOrEmail(usernamePasswordAuthentication.getPrincipal());
-        if (userContainer.isEmpty()) {
-            log.error("User {} is trying to authenticate but no userContainer found.", usernamePasswordAuthentication.getPrincipal());
-            throw new BizException(HttpStatus.UNAUTHORIZED, "用户名或密码错误。");
-        }
-
-        var user = userContainer.get();
-
-        var userCredentialExample = new UserCredential();
-        userCredentialExample.setUserId(user.getId());
-        userCredentialExample.setProvider(CredentialProvider.LOCAL);
-
-        // get userContainer credentials from database
-        var userCredentials = userCredentialRepository.findOne(Example.of(userCredentialExample))
-                .orElseThrow(() -> new BizException(HttpStatus.UNAUTHORIZED, "您还没有配置密码，请联系管理员处理。"));
-
-        // validate password
-        if (!passwordEncoder.matches(usernamePasswordAuthentication.getCredentials(), userCredentials.getCredential())) {
-            log.error("User {} is trying to authenticate but password is incorrect.", usernamePasswordAuthentication.getPrincipal());
-            throw new BizException(HttpStatus.UNAUTHORIZED, "用户名或密码错误。");
-        }
-
-        // erase credentials
-        usernamePasswordAuthentication.eraseCredentials();
-
-        // set values
-        usernamePasswordAuthentication.setAuthenticated(true);
-        usernamePasswordAuthentication.setDetails(user);
-
-        return usernamePasswordAuthentication;
-    }
-
-    /**
-     * Checks if this provider supports the given authentication type.
-     *
-     * @param authentication the authentication class to check
-     * @return true if this provider supports the given type
-     */
-    @Override
-    public boolean supports(Class<?> authentication) {
-        return UsernamePasswordAuthentication.class.isAssignableFrom(authentication);
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java b/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java
deleted file mode 100644
index 68f50bd..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/AppService.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.manager.AppManager;
-import org.springframework.stereotype.Service;
-
-@Service
-public class AppService {
-
-    private final AppManager appManager;
-
-    public AppService(AppManager appManager) {
-        this.appManager = appManager;
-    }
-
-    public String getVersion() {
-        return appManager.getVersion();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java b/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java
deleted file mode 100644
index da41902..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/AuthService.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.LoginRequest;
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.security.authentication.UsernamePasswordAuthentication;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpStatus;
-import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.stereotype.Service;
-
-/**
- * Service handling user authentication, login, and session management.
- *
- * @author zihluwang
- */
-@Service
-public class AuthService {
-
-    private static final Logger log = LoggerFactory.getLogger(AuthService.class);
-    private final AuthenticationManager authenticationManager;
-
-    public AuthService(AuthenticationManager authenticationManager) {
-        this.authenticationManager = authenticationManager;
-    }
-
-    /**
-     * Authenticates a user with the given login credentials.
-     * <p>
-     * Delegates authentication to Spring Security's {@link AuthenticationManager} and verifies
-     * that the result is of the expected {@link UsernamePasswordAuthentication} type.
-     *
-     * @param request the login credentials containing principle and password
-     * @return the authenticated {@link User}
-     * @throws BizException if authentication fails or the result type is unexpected
-     */
-    public User login(LoginRequest request) {
-        var _authentication = authenticationManager.authenticate(UsernamePasswordAuthentication
-                .unauthenticated(request.principle(), request.credential()));
-        if (!(_authentication instanceof UsernamePasswordAuthentication authentication)) {
-            log.error(
-                    "Type mismatched, required type is UsernamePasswordAuthentication but got {}.",
-                    _authentication.getClass()
-            );
-            throw new BizException(HttpStatus.INTERNAL_SERVER_ERROR, "登录服务异常，请稍后再试。");
-        }
-
-        return authentication.getDetails();
-    }
-
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java b/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java
deleted file mode 100644
index eb93086..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/CookieService.java
+++ /dev/null
@@ -1,67 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.manager.CookieManager;
-import org.springframework.http.ResponseCookie;
-import org.springframework.stereotype.Service;
-
-import java.time.Duration;
-
-/**
- * Service for building HTTP cookies with configurable properties.
- *
- * @author zihluwang
- */
-@Service
-public class CookieService {
-
-    private final CookieManager cookieManager;
-
-    public CookieService(CookieManager cookieManager) {
-        this.cookieManager = cookieManager;
-    }
-
-    /**
-     * Builds a response cookie with the default max age from configuration.
-     *
-     * @param cookieName the cookie name
-     * @param value      the cookie value
-     * @return a configured ResponseCookie
-     */
-    public ResponseCookie buildCookie(String cookieName, String value) {
-        return buildCookieInternal(cookieName, value, cookieManager.getMaxAge());
-    }
-
-    /**
-     * Builds a response cookie with a custom valid duration.
-     *
-     * @param cookieName    the cookie name
-     * @param value         the cookie value
-     * @param validDuration the cookie's max age
-     * @return a configured ResponseCookie
-     */
-    public ResponseCookie buildCookie(String cookieName, String value, Duration validDuration) {
-        return buildCookieInternal(cookieName, value, validDuration);
-    }
-
-    /**
-     * Creates a response cookie builder with specified name, value and valid duration.
-     *
-     * @param name   name of the cookie
-     * @param value  value of the cookie
-     * @param maxAge valid duration of the cookie
-     * @return cookie builder
-     */
-    protected ResponseCookie buildCookieInternal(
-            String name,
-            String value,
-            Duration maxAge
-    ) {
-        return ResponseCookie.from(name, value)
-                .secure(cookieManager.getSecure())
-                .maxAge(maxAge)
-                .httpOnly(cookieManager.getHttpOnly())
-                .path(cookieManager.getPath())
-                .sameSite(cookieManager.getSameSite().attributeValue())
-                .build();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java b/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java
deleted file mode 100644
index fa2118d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/DailyPasswordService.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.DailyPasswordResponse;
-import com.onixbyte.deltaforceguide.manager.DailyPasswordManager;
-import org.springframework.stereotype.Service;
-
-/**
- * Service for generating and caching daily rotation passwords.
- *
- * @author zihluwang
- */
-@Service
-public class DailyPasswordService {
-
-    private final DailyPasswordManager dailyPasswordManager;
-
-    public DailyPasswordService(DailyPasswordManager dailyPasswordManager) {
-        this.dailyPasswordManager = dailyPasswordManager;
-    }
-
-    /**
-     * Retrieves the daily password for the current day.
-     * @return the daily password response
-     */
-    public DailyPasswordResponse getDailyPassword() {
-        return dailyPasswordManager.getDailyPassword();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java b/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java
deleted file mode 100644
index 5f5098b..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/FirearmService.java
+++ /dev/null
@@ -1,111 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.FirearmRequest;
-import com.onixbyte.deltaforceguide.domain.dto.FirearmResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.enumeration.FirearmType;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-/**
- * Service handling firearm business logic including CRUD operations and queries.
- *
- * @author zihluwang
- */
-@Service
-public class FirearmService {
-
-    private final FirearmRepository firearmRepository;
-
-    public FirearmService(FirearmRepository firearmRepository) {
-        this.firearmRepository = firearmRepository;
-    }
-
-    /**
-     * Queries firearms with optional type filter and pagination.
-     *
-     * @param type optional firearm type filter
-     * @param pageable pagination parameters
-     * @return a paginated response of firearm records
-     */
-    public PageResponse<FirearmResponse> pageQuery(FirearmType type, Pageable pageable) {
-        Page<Firearm> page = type == null
-                ? firearmRepository.findAll(pageable)
-                : firearmRepository.findAllByType(type, pageable);
-
-        return PageResponse.from(page.map(FirearmResponse::from));
-    }
-
-    /**
-     * Finds a firearm by its ID.
-     *
-     * @param id the firearm ID
-     * @return the firearm response
-     */
-    public FirearmResponse queryById(Long id) {
-        return firearmRepository.findById(id)
-                .map(FirearmResponse::from)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-    }
-
-    /**
-     * Creates a new firearm from the provided request data.
-     *
-     * @param request the firearm creation request
-     * @return the created firearm response
-     */
-    public FirearmResponse addFirearm(FirearmRequest request) {
-        var firearm = firearmRepository.save(Firearm.builder()
-                .name(request.name())
-                .type(request.type())
-                .level(request.level())
-                .calibre(request.calibre())
-                .fireRate(request.fireRate())
-                .armourDamage(request.armourDamage())
-                .bodyDamage(request.bodyDamage())
-                .review(request.review())
-                .build());
-        
-        return FirearmResponse.from(firearm);
-    }
-
-    /**
-     * Updates an existing firearm identified by ID.
-     *
-     * @param id the firearm ID
-     * @param request the updated firearm data
-     * @return the updated firearm response
-     */
-    public FirearmResponse updateFirearm(Long id, FirearmRequest request) {
-        var firearm = firearmRepository.findById(id)
-                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-
-        firearm.setName(request.name());
-        firearm.setType(request.type());
-        firearm.setLevel(request.level());
-        firearm.setCalibre(request.calibre());
-        firearm.setFireRate(request.fireRate());
-        firearm.setArmourDamage(request.armourDamage());
-        firearm.setBodyDamage(request.bodyDamage());
-        firearm.setReview(request.review());
-
-        return FirearmResponse.from(firearmRepository.save(firearm));
-    }
-
-    /**
-     * Deletes a firearm by its ID.
-     *
-     * @param id the firearm ID to delete
-     */
-    public void deleteFirearm(Long id) {
-        Firearm firearm = firearmRepository.findById(id)
-                .orElseThrow(() -> new BizException(HttpStatus.NOT_FOUND, "Firearm not found: " + id));
-        firearmRepository.delete(firearm);
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java b/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java
deleted file mode 100644
index 9b97e8f..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/ModificationService.java
+++ /dev/null
@@ -1,219 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.AccessoryRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationRequest;
-import com.onixbyte.deltaforceguide.domain.dto.ModificationResponse;
-import com.onixbyte.deltaforceguide.domain.dto.PageResponse;
-import com.onixbyte.deltaforceguide.domain.dto.TuningRequest;
-import com.onixbyte.deltaforceguide.domain.entity.Accessory;
-import com.onixbyte.deltaforceguide.domain.entity.Firearm;
-import com.onixbyte.deltaforceguide.domain.entity.Modification;
-import com.onixbyte.deltaforceguide.domain.entity.Tuning;
-import com.onixbyte.deltaforceguide.manager.ModificationManager;
-import com.onixbyte.deltaforceguide.repository.FirearmRepository;
-import com.onixbyte.deltaforceguide.repository.ModificationRepository;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.ArrayList;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-
-/**
- * Service handling modification business logic including CRUD, batch operations, and tag filtering.
- *
- * @author zihluwang
- */
-@Service
-public class ModificationService {
-
-    private final ModificationRepository modificationRepository;
-    private final FirearmRepository firearmRepository;
-    private final ModificationManager modificationManager;
-    private final ObjectMapper objectMapper;
-
-    public ModificationService(
-            ModificationRepository modificationRepository,
-            FirearmRepository firearmRepository,
-            ModificationManager modificationManager,
-            ObjectMapper objectMapper
-    ) {
-        this.modificationRepository = modificationRepository;
-        this.firearmRepository = firearmRepository;
-        this.modificationManager = modificationManager;
-        this.objectMapper = objectMapper;
-    }
-
-    /**
-     * Queries modifications with optional firearm and tag filters.
-     *
-     * @param firearmId optional firearm ID filter
-     * @param tags optional tag list filter
-     * @param pageable pagination parameters
-     * @return a paginated response of modification records
-     */
-    public PageResponse<ModificationResponse> pageQuery(Long firearmId, List<String> tags, Pageable pageable) {
-        String tagsJson = null;
-        if (tags != null && !tags.isEmpty()) {
-            try {
-                tagsJson = objectMapper.writeValueAsString(tags);
-            } catch (JsonProcessingException e) {
-                throw new RuntimeException("Failed to serialize tags", e);
-            }
-        }
-        
-        Page<Modification> page;
-        if (tagsJson != null || firearmId != null) {
-            page = modificationRepository.pageQueryByFirearmAndTags(firearmId, tagsJson, pageable);
-        } else {
-            page = modificationRepository.findAllBy(pageable);
-        }
-
-        return PageResponse.from(page.map(ModificationResponse::from));
-    }
-
-    /**
-     * Finds a modification by its ID.
-     *
-     * @param id the modification ID
-     * @return the modification response
-     */
-    public ModificationResponse queryById(Long id) {
-        return modificationRepository.findById(id)
-                .map(ModificationResponse::from)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-    }
-
-    /**
-     * Finds all unique tags across modifications, optionally scoped to a firearm.
-     *
-     * @param firearmId optional firearm ID to scope the tag search
-     * @return list of unique tag strings
-     */
-    public List<String> findAllTags(Long firearmId) {
-        return modificationRepository.findAllTags(firearmId);
-    }
-
-    /**
-     * Creates a new modification for a given firearm.
-     *
-     * @param request the modification creation request
-     * @return the created modification response
-     */
-    public ModificationResponse create(ModificationRequest request) {
-        return modificationManager.create(request);
-    }
-
-    /**
-     * Creates multiple modifications in a single batch operation.
-     *
-     * @param requests list of modification creation requests
-     * @return list of created modification responses
-     */
-    public List<ModificationResponse> batchCreate(List<ModificationRequest> requests) {
-        return modificationManager.batchCreate(requests);
-    }
-
-    /**
-     * Updates an existing modification identified by ID.
-     *
-     * @param id the modification ID
-     * @param request the updated modification data
-     * @return the updated modification response
-     */
-    public ModificationResponse update(Long id, ModificationRequest request) {
-        Modification modification = modificationRepository.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-        Firearm firearm = firearmRepository.findById(request.firearmId())
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Firearm not found: " + request.firearmId()));
-
-        modification.setFirearm(firearm);
-        modification.setName(request.name());
-        modification.setCode(request.code());
-        modification.setTags(safeTags(request.tags()));
-        modification.setAccessories(toAccessories(request.accessories()));
-        modification.setNote(request.note());
-        modification.setAuthor(request.author());
-        modification.setVideoUrl(request.videoUrl());
-
-        return ModificationResponse.from(modificationRepository.save(modification));
-    }
-
-    /**
-     * Deletes a modification by its ID.
-     *
-     * @param id the modification ID to delete
-     */
-    public void delete(Long id) {
-        Modification modification = modificationRepository.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + id));
-        modificationRepository.delete(modification);
-    }
-
-    /**
-     * Deletes multiple modifications in a single batch operation.
-     *
-     * @param ids list of modification IDs to delete
-     */
-    public void batchDelete(List<Long> ids) {
-        Set<Long> uniqueIds = new LinkedHashSet<>(ids);
-        List<Modification> modifications = modificationRepository.findAllById(uniqueIds);
-
-        if (modifications.size() != uniqueIds.size()) {
-            Set<Long> foundIds = modifications.stream()
-                    .map(Modification::getId)
-                    .collect(java.util.stream.Collectors.toSet());
-            List<Long> missingIds = uniqueIds.stream()
-                    .filter(id -> !foundIds.contains(id))
-                    .toList();
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Modification not found: " + missingIds);
-        }
-
-        modificationRepository.deleteAllInBatch(modifications);
-    }
-
-    private List<String> safeTags(List<String> tags) {
-        return tags == null ? new ArrayList<>() : tags;
-    }
-
-    private List<Accessory> toAccessories(List<AccessoryRequest> accessoryRequests) {
-        if (accessoryRequests == null) {
-            return new ArrayList<>();
-        }
-
-        return accessoryRequests.stream()
-                .map(this::toAccessory)
-                .toList();
-    }
-
-    private Accessory toAccessory(AccessoryRequest request) {
-        Accessory accessory = new Accessory();
-        accessory.setSlotName(request.slotName());
-        accessory.setAccessoryName(request.accessoryName());
-        accessory.setTunings(toTunings(request.tunings()));
-        return accessory;
-    }
-
-    private List<Tuning> toTunings(List<TuningRequest> tuningRequests) {
-        if (tuningRequests == null) {
-            return new ArrayList<>();
-        }
-
-        return tuningRequests.stream()
-                .map(this::toTuning)
-                .toList();
-    }
-
-    private Tuning toTuning(TuningRequest request) {
-        Tuning tuning = new Tuning();
-        tuning.setTuningName(request.tuningName());
-        tuning.setTuningValue(request.tuningValue());
-        return tuning;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java b/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java
deleted file mode 100644
index 700e26d..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/UserService.java
+++ /dev/null
@@ -1,155 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.entity.User;
-import com.onixbyte.deltaforceguide.domain.entity.UserCredential;
-import com.onixbyte.deltaforceguide.manager.UserCredentialManager;
-import com.onixbyte.deltaforceguide.manager.UserManager;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.web.server.ResponseStatusException;
-
-import java.util.List;
-
-/**
- * Service for user account management and profile operations.
- *
- * @author zihluwang
- */
-@Service
-public class UserService {
-
-    private final UserManager userManager;
-    private final UserCredentialManager userCredentialManager;
-
-    public UserService(UserManager userManager, UserCredentialManager userCredentialManager) {
-        this.userManager = userManager;
-        this.userCredentialManager = userCredentialManager;
-    }
-
-    /**
-     * Retrieves all registered users.
-     *
-     * @return list of all users
-     */
-    public List<User> findAll() {
-        return userManager.findAll();
-    }
-
-    /**
-     * Finds a user by their ID.
-     *
-     * @param id the user ID
-     * @return the user
-     */
-    public User queryById(Long id) {
-        return userManager.findById(id)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + id));
-    }
-
-    /**
-     * Finds a user by their username.
-     *
-     * @param username the username to search for
-     * @return the user
-     */
-    public User queryByUsername(String username) {
-        return userManager.findByUsername(username)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + username));
-    }
-
-    /**
-     * Creates a new user account.
-     *
-     * @param user the user entity to persist
-     * @return the saved user entity
-     */
-    public User create(User user) {
-        return userManager.save(user);
-    }
-
-    /**
-     * Updates an existing user account.
-     *
-     * @param user the user entity with updated fields
-     * @return the saved user entity
-     */
-    public User update(User user) {
-        if (user.getId() == null || userManager.findById(user.getId()).isEmpty()) {
-            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + user.getId());
-        }
-        return userManager.save(user);
-    }
-
-    /**
-     * Finds all credentials associated with a user.
-     *
-     * @param userId the user ID
-     * @return list of user credentials
-     */
-    public List<UserCredential> findCredentials(Long userId) {
-        ensureUserExists(userId);
-        return userCredentialManager.findAllByUserId(userId);
-    }
-
-    /**
-     * Queries a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider
-     * @return the matching credential
-     */
-    public UserCredential queryCredential(Long userId, String provider) {
-        ensureUserExists(userId);
-        return userCredentialManager.findByUserIdAndProvider(userId, provider)
-                .orElseThrow(() -> new ResponseStatusException(
-                        HttpStatus.NOT_FOUND,
-                        "User credential not found: userId=" + userId + ", provider=" + provider));
-    }
-
-    /**
-     * Creates or updates a credential for a user and provider.
-     *
-     * @param userId     the user ID
-     * @param provider   the authentication provider
-     * @param credential the credential value
-     * @return the saved credential
-     */
-    public UserCredential upsertCredential(Long userId, String provider, String credential) {
-        User user = ensureUserExists(userId);
-        UserCredential userCredential = userCredentialManager.findByUserIdAndProvider(userId, provider)
-                .orElseGet(UserCredential::new);
-        userCredential.setUser(user);
-        userCredential.setProvider(provider);
-        userCredential.setCredential(credential);
-        return userCredentialManager.save(userCredential);
-    }
-
-    /**
-     * Deletes a specific credential for a user by provider.
-     *
-     * @param userId   the user ID
-     * @param provider the authentication provider
-     */
-    public void deleteCredential(Long userId, String provider) {
-        ensureUserExists(userId);
-        userCredentialManager.deleteByUserIdAndProvider(userId, provider);
-    }
-
-    /**
-     * Deletes a user and all associated credentials.
-     *
-     * @param id the user ID to delete
-     */
-    public void deleteById(Long id) {
-        ensureUserExists(id);
-        userCredentialManager.deleteAllByUserId(id);
-        userManager.deleteById(id);
-    }
-
-    private User ensureUserExists(Long userId) {
-        return userManager.findById(userId)
-                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found: " + userId));
-    }
-}
-
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java b/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
deleted file mode 100644
index e864a77..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/service/WebhookService.java
+++ /dev/null
@@ -1,219 +0,0 @@
-package com.onixbyte.deltaforceguide.service;
-
-import com.onixbyte.deltaforceguide.domain.dto.*;
-import com.onixbyte.deltaforceguide.manager.ModificationManager;
-import com.onixbyte.deltaforceguide.manager.WebhookManager;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.data.redis.core.RedisTemplate;
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import com.onixbyte.deltaforceguide.exeption.BizException;
-import org.yaml.snakeyaml.Yaml;
-
-import java.time.Duration;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.regex.Pattern;
-
-@Service
-public class WebhookService {
-
-    private static final Logger log = LoggerFactory.getLogger(WebhookService.class);
-    private static final String TRIGGER_LABEL = "weapon-mod";
-    private static final Duration DEDUP_TTL = Duration.ofHours(12);
-    private static final Pattern YAML_FENCE =
-            Pattern.compile("```ya?ml\\s*\\R(.*?)```", Pattern.DOTALL);
-
-    private final ModificationManager modificationManager;
-    private final RedisTemplate<String, Object> redisTemplate;
-    private final WebhookManager webhookManager;
-    private final Yaml yaml;
-
-    public WebhookService(
-            ModificationManager modificationManager,
-            RedisTemplate<String, Object> redisTemplate,
-            WebhookManager webhookManager
-    ) {
-        this.modificationManager = modificationManager;
-        this.redisTemplate = redisTemplate;
-        this.webhookManager = webhookManager;
-        this.yaml = new Yaml();
-    }
-
-    public void processIssueEvent(GitHubIssueRequest request) {
-        var issue = request.issue();
-        var repository = request.repository();
-        var sender = request.sender();
-
-        if (!isAllowedSender(sender)) {
-            log.info("Issue #{} sender={} not in allowed-users, skipping",
-                    issue.number(), sender != null ? sender.login() : "null");
-            return;
-        }
-
-        if (!hasTriggerLabel(issue.labels())) {
-            log.debug("Issue #{} lacks trigger label, skipping", issue.number());
-            return;
-        }
-
-        var dedupKey = "github:webhook:processed:%s:%d"
-                .formatted(repository.fullName(), issue.number());
-        var acquired = redisTemplate.opsForValue()
-                .setIfAbsent(dedupKey, "1", DEDUP_TTL);
-        if (acquired == null || !acquired) {
-            log.info("Issue #{} already processed, skipping", issue.number());
-            return;
-        }
-
-        var parsedYaml = extractYaml(issue.body());
-        if (parsedYaml == null) {
-            log.warn("No YAML block found in issue #{} body", issue.number());
-            return;
-        }
-
-        var data = yaml.<Map<String, Object>>load(parsedYaml);
-        if (data == null) {
-            log.warn("Empty YAML block in issue #{}", issue.number());
-            return;
-        }
-
-        if (data.containsKey("modifications")) {
-            processBatch(issue.number(), data);
-        } else {
-            processSingle(issue.number(), data);
-        }
-    }
-
-    private void processSingle(Long issueNumber, Map<String, Object> data) {
-        var request = mapToRequest(data);
-        log.info("Creating modification from issue #{}: name={}", issueNumber, request.name());
-        modificationManager.create(request);
-    }
-
-    @SuppressWarnings("unchecked")
-    private void processBatch(Long issueNumber, Map<String, Object> data) {
-        var list = (List<Map<String, Object>>) data.get("modifications");
-        if (list == null || list.isEmpty()) {
-            log.warn("Empty modifications list in issue #{}", issueNumber);
-            return;
-        }
-        var requests = list.stream()
-                .map(this::mapToRequest)
-                .toList();
-        log.info("Batch creating {} modifications from issue #{}", requests.size(), issueNumber);
-        modificationManager.batchCreate(requests);
-    }
-
-    private ModificationRequest mapToRequest(Map<String, Object> data) {
-        Long firearmId = modificationManager.resolveFirearmId(
-                toLong(data.get("firearmId")),
-                (String) data.get("firearmName"));
-        if (firearmId == null) {
-            throw new BizException(HttpStatus.BAD_REQUEST,
-                    "YAML must contain firearmId or firearmName");
-        }
-        String name = (String) data.get("name");
-        String code = (String) data.get("code");
-        List<String> tags = toStringList(data.get("tags"));
-        List<AccessoryRequest> accessories = mapAccessories(data.get("accessories"));
-        String note = (String) data.get("note");
-        String author = (String) data.get("author");
-        String videoUrl = (String) data.get("videoUrl");
-
-        return new ModificationRequest(firearmId, name, code, tags, accessories,
-                note, author, videoUrl);
-    }
-
-    private List<AccessoryRequest> mapAccessories(Object raw) {
-        if (!(raw instanceof List<?> list)) {
-            return new ArrayList<>();
-        }
-        var result = new ArrayList<AccessoryRequest>();
-        for (var item : list) {
-            if (item instanceof Map<?, ?> map) {
-                result.add(new AccessoryRequest(
-                        (String) map.get("slotName"),
-                        (String) map.get("accessoryName"),
-                        mapTunings(map.get("tunings"))
-                ));
-            }
-        }
-        return result;
-    }
-
-    private List<TuningRequest> mapTunings(Object raw) {
-        if (!(raw instanceof List<?> list)) {
-            return new ArrayList<>();
-        }
-        var result = new ArrayList<TuningRequest>();
-        for (var item : list) {
-            if (item instanceof Map<?, ?> map) {
-                result.add(new TuningRequest(
-                        (String) map.get("tuningName"),
-                        toDouble(map.get("tuningValue"))
-                ));
-            }
-        }
-        return result;
-    }
-
-    private List<String> toStringList(Object raw) {
-        if (raw instanceof List<?> list) {
-            return list.stream()
-                    .filter(String.class::isInstance)
-                    .map(String.class::cast)
-                    .toList();
-        }
-        return new ArrayList<>();
-    }
-
-    private boolean isAllowedSender(
-            GitHubWebhookSender sender
-    ) {
-        var allowedUsers = webhookManager.allowedUsers();
-        if (allowedUsers == null || allowedUsers.isEmpty()) {
-            return true;
-        }
-        if (sender == null || sender.login() == null) {
-            return false;
-        }
-        return allowedUsers.contains(sender.login());
-    }
-
-    private boolean hasTriggerLabel(List<GitHubWebhookLabel> labels) {
-        if (labels == null) {
-            return false;
-        }
-        return labels.stream().anyMatch(label -> TRIGGER_LABEL.equals(label.name()));
-    }
-
-    private String extractYaml(String body) {
-        if (body == null) {
-            return null;
-        }
-        var matcher = YAML_FENCE.matcher(body);
-        return matcher.find() ? matcher.group(1) : null;
-    }
-
-    private Long toLong(Object value) {
-        if (value instanceof Number num) {
-            return num.longValue();
-        }
-        if (value instanceof String s) {
-            return Long.parseLong(s);
-        }
-        return null;
-    }
-
-    private Double toDouble(Object value) {
-        if (value instanceof Number num) {
-            return num.doubleValue();
-        }
-        if (value instanceof String s) {
-            return Double.parseDouble(s);
-        }
-        return null;
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java b/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java
deleted file mode 100644
index 26f0112..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/CookieName.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * Constants for HTTP cookie names used for authentication tokens.
- *
- * @author zihluwang
- */
-public class CookieName {
-
-    public static final String ACCESS_TOKEN = "AccessToken";
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java b/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java
deleted file mode 100644
index 9488536..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/CredentialProvider.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * Constants for supported authentication provider identifiers.
- *
- * @author zihluwang
- */
-public class CredentialProvider {
-
-    public static final String LOCAL = "LOCAL";
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java b/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
deleted file mode 100644
index 134408b..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/DateTimeFormatters.java
+++ /dev/null
@@ -1,46 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import java.time.format.DateTimeFormatter;
-
-/**
- * Utility class providing predefined {@link DateTimeFormatter} instances for common date and
- * time patterns. These formatters can be used to parse and format {@code java.time} objects
- * consistently throughout an application.
- *
- * @author zihluwang
- */
-public class DateTimeFormatters {
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing full date and time with seconds, using
-     * the pattern "yyyy-MM-dd HH:mm:ss".
-     * <p>
-     * Example: "{@code 2023-10-27 15:30:45}"
-     */
-    public static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing dates only, using the
-     * pattern "yyyy-MM-dd".
-     * <p>
-     * Example: "{@code 2023-10-27}"
-     */
-    public static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing times only, using the
-     * pattern "HH:mm:ss".
-     * <p>
-     * Example: "{@code 15:30:45}"
-     */
-    public static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
-
-    /**
-     * A {@link DateTimeFormatter} for formatting and parsing year and month only, using the
-     * pattern "yyyy-MM".
-     * <p>
-     * Example: "{@code 2023-10}"
-     */
-    public static final DateTimeFormatter YEAR_MONTH_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM");
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java b/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java
deleted file mode 100644
index 05b9d58..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/GitHubWebhookHeader.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-/**
- * This class lists the header names that GitHub sends in webhook requests.
- *
- * @author siujamo
- */
-public class GitHubWebhookHeader {
-
-    /**
-     * The unique identifier of the webhook.
-     */
-    public static final String HOOK_ID = "X-GitHub-Hook-ID";
-
-    /**
-     * The name of the event that triggered the delivery.
-     */
-    public static final String EVENT = "X-GitHub-Event";
-
-    /**
-     * A globally unique identifier (GUID) to identify the event.
-     */
-    public static final String DELIVERY = "X-GitHub-Delivery";
-
-    /**
-     * This header is sent if the webhook is configured with a {@code secret}. This is the HMAC hex
-     * digest of the request body, and is generated using the SHA-1 hash function and the secret as
-     * the HMAC {@code key}. {@code X-Hub-Signature} is provided for compatibility with
-     * existing integrations. We recommend that you use the more secure
-     * {@code X-Hub-Signature-256} instead.
-     */
-    public static final String SIGNATURE = "X-Hub-Signature";
-
-    /**
-     * This header is sent if the webhook is configured with a {@code secret}. This is the HMAC hex
-     * digest of the request body, and is generated using the SHA-256 hash function and the
-     * {@code secret} as the HMAC key. For more information, see <a href="https://docs.github.com/en/webhooks/using-webhooks/securing-your-webhooks"
-     * >Validating webhook deliveries</a>.
-     */
-    public static final String SIGNATURE_256 = "X-Hub-Signature-256";
-
-    /**
-     * This header will always have the prefix {@code GitHub-Hookshot/}.
-     */
-    public static final String USER_AGENT = "User-Agent";
-
-    /**
-     * The type of resource where the webhook was created.
-     */
-    public static final String INSTALLATION_TARGET_TYPE = "X-GitHub-Hook-Installation-Target-Type";
-
-    /**
-     * The unique identifier of the resource where the webhook was created.
-     */
-    public static final String INSTALLATION_TARGET_ID = "X-GitHub-Hook-Installation-Target-ID";
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
deleted file mode 100644
index ae47823..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonModules.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
-
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.time.LocalTime;
-
-/**
- * Shared Jackson {@link com.fasterxml.jackson.databind.Module} instances for custom date/time
- * serialisation and deserialisation across the application.
- *
- * @author zihluwang
- */
-public class JacksonModules {
-
-    public static final SimpleModule DATE_TIME_MODULE = initialiseDateTimeModule();
-
-    private static SimpleModule initialiseDateTimeModule() {
-        var javaTimeModule = new JavaTimeModule();
-        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatters.DATE_TIME_FORMATTER));
-        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatters.DATE_TIME_FORMATTER));
-
-        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatters.DATE_FORMATTER));
-        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatters.DATE_FORMATTER));
-
-        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatters.TIME_FORMATTER));
-        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatters.TIME_FORMATTER));
-
-        return javaTimeModule;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java b/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
deleted file mode 100644
index 4e50c38..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/shared/JacksonRedisSerialiser.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.onixbyte.deltaforceguide.shared;
-
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
-
-/**
- * Singleton serialiser for Redis cache operations using
- * {@link GenericJackson2JsonRedisSerializer} with JavaTime module support.
- *
- * @author zihluwang
- */
-public class JacksonRedisSerialiser {
-
-    public static final GenericJackson2JsonRedisSerializer INSTANCE = initialiseSerializer();
-
-    private static GenericJackson2JsonRedisSerializer initialiseSerializer() {
-        var serializer = new GenericJackson2JsonRedisSerializer();
-
-        serializer.configure((configurer) -> {
-            configurer.registerModule(new JavaTimeModule());
-            configurer.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
-        });
-
-        return serializer;
-    }
-}
-
diff --git a/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java b/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java
deleted file mode 100644
index 1d576a5..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/utils/DateTimeUtil.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.onixbyte.deltaforceguide.utils;
-
-import java.time.Instant;
-import java.time.LocalDateTime;
-import java.time.ZoneId;
-
-/**
- * Utility class for date and time operations using system-default time zone.
- *
- * @author zihluwang
- */
-public class DateTimeUtil {
-
-    /**
-     * Convert a {@link LocalDateTime} to an {@link Instant} using the system-default time zone.
-     *
-     * @param ldt the local date-time to convert
-     * @return the corresponding instant
-     */
-    public static Instant asInstant(LocalDateTime ldt) {
-        return ldt.atZone(ZoneId.systemDefault())
-                .toInstant();
-    }
-}
diff --git a/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java b/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java
deleted file mode 100644
index ee31c22..0000000
--- a/src/main/java/com/onixbyte/deltaforceguide/wrapper/RepeatedlyReadRequestWrapper.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package com.onixbyte.deltaforceguide.wrapper;
-
-import jakarta.servlet.ReadListener;
-import jakarta.servlet.ServletInputStream;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletRequestWrapper;
-import org.springframework.util.StreamUtils;
-import java.io.BufferedReader;
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
-
-public class RepeatedlyReadRequestWrapper extends HttpServletRequestWrapper {
-
-    private final byte[] body;
-
-    public RepeatedlyReadRequestWrapper(HttpServletRequest request) throws IOException {
-        super(request);
-        this.body = StreamUtils.copyToByteArray(request.getInputStream());
-    }
-
-    @Override
-    public ServletInputStream getInputStream() {
-        final var byteArrayInputStream = new ByteArrayInputStream(body);
-        return new ServletInputStream() {
-            @Override
-            public boolean isFinished() {
-                return byteArrayInputStream.available() == 0;
-            }
-
-            @Override
-            public boolean isReady() {
-                return true;
-            }
-
-            @Override
-            public void setReadListener(ReadListener readListener) {
-            }
-
-            @Override
-            public int read() throws IOException {
-                return byteArrayInputStream.read();
-            }
-        };
-    }
-
-    @Override
-    public BufferedReader getReader() throws IOException {
-        return new BufferedReader(new InputStreamReader(this.getInputStream(), StandardCharsets.UTF_8));
-    }
-
-    public String getBodyString() {
-        return new String(body, StandardCharsets.UTF_8);
-    }
-}
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
deleted file mode 100644
index 8fcdf2f..0000000
--- a/src/main/resources/application.yaml
+++ /dev/null
@@ -1,51 +0,0 @@
-spring:
-  application:
-    name: delta-force-guide
-  cache:
-    type: redis
-    redis:
-      time-to-live: PT2H
-  data:
-    redis:
-      repositories:
-        # Disable redis repositories
-        enabled: false
-  jta:
-    # Disable JTA support
-    enabled: false
-  jpa:
-    properties:
-      hibernate:
-        transaction:
-          jta:
-            # No need to use distributed transaction manager for 1 datasource.
-            platform: org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform
-    hibernate:
-      ddl-auto: none
-    open-in-view: false
-  datasource:
-    hikari:
-      minimum-idle: 1
-      maximum-pool-size: 10
-  flyway:
-    enabled: true
-    baseline-on-migrate: true
-
-mybatis:
-  configuration:
-    log-impl: org.apache.ibatis.logging.slf4j.Slf4jImpl
-    map-underscore-to-camel-case: true
-  type-aliases-package: com.onixbyte.deltaforceguide.domain.entity
-  type-handlers-package: com.onixbyte.deltaforceguide.mapper.handler
-  mapper-locations: classpath:/mapper/*.xml
-
-logging:
-  level:
-    org.hibernate:
-      orm.connections.pooling: off
-
-app:
-  common:
-    version: ${appVersion}
-    channel: ${channel}
-    vendor: ${vendor}
diff --git a/src/main/resources/db/migration/V2__init.sql b/src/main/resources/db/migration/V2__init.sql
deleted file mode 100644
index acbaad1..0000000
--- a/src/main/resources/db/migration/V2__init.sql
+++ /dev/null
@@ -1,34 +0,0 @@
-DROP TABLE IF EXISTS firearm CASCADE;
-DROP TABLE IF EXISTS modification CASCADE;
-
-
-CREATE TABLE IF NOT EXISTS firearm
-(
-    id     BIGSERIAL   NOT NULL PRIMARY KEY,
-    name   VARCHAR(64) NOT NULL,
-    type   INT         NOT NULL,
-    level  VARCHAR(10) NOT NULL,
-    review TEXT        NULL
-);
-
-
-CREATE TABLE IF NOT EXISTS modification
-(
-    id         BIGSERIAL    NOT NULL PRIMARY KEY,
-    firearm_id BIGINT       NOT NULL,
-    name       VARCHAR(64)  NOT NULL,
-    code       VARCHAR(64)  NOT NULL,
-    tags       JSONB        NULL,
-    note       TEXT         NULL,
-    author     VARCHAR(64)  NULL,
-    video_url  VARCHAR(512) NULL,
-    CONSTRAINT fk_modification_firearm
-        FOREIGN KEY (firearm_id)
-            REFERENCES firearm (id)
-            ON DELETE CASCADE
-            ON UPDATE RESTRICT
-);
-
-CREATE INDEX idx_modification_firearm_id ON modification (firearm_id);
-
-
diff --git a/src/main/resources/db/migration/V3__bullet_and_damages.sql b/src/main/resources/db/migration/V3__bullet_and_damages.sql
deleted file mode 100644
index ae0fabf..0000000
--- a/src/main/resources/db/migration/V3__bullet_and_damages.sql
+++ /dev/null
@@ -1,61 +0,0 @@
--- 创建新表
-DROP TABLE IF EXISTS firearm_new;
-CREATE TABLE firearm_new
-(
-    id            BIGSERIAL   NOT NULL,
-    name          VARCHAR(64) NOT NULL,
-    type          INTEGER     NOT NULL,
-    level         VARCHAR(10) NOT NULL,
-    calibre       VARCHAR(20) NOT NULL,
-    fire_rate     INTEGER     NOT NULL,
-    armour_damage INTEGER     NOT NULL,
-    body_damage   INTEGER     NOT NULL,
-    review        TEXT        NULL,
-    CONSTRAINT firearm_new_pkey PRIMARY KEY (id)
-);
-
--- 迁移数据
-INSERT INTO firearm_new(id, name, type, level, calibre, fire_rate, armour_damage, body_damage,
-                        review)
-SELECT id,
-       name,
-       type,
-       level,
-       '',
-       0,
-       0,
-       0,
-       review
-FROM firearm;
-
--- 处理外键（关键步骤）
--- 先删除指向旧表的外键约束
-ALTER TABLE modification
-    DROP CONSTRAINT fk_modification_firearm;
-
--- 重命名旧表和索引
-ALTER TABLE firearm
-    RENAME TO firearm_legacy;
-ALTER INDEX firearm_pkey RENAME TO firearm_legacy_pkey;
-
--- 重命名新表和索引
-ALTER TABLE firearm_new
-    RENAME TO firearm;
-ALTER INDEX firearm_new_pkey RENAME TO firearm_pkey;
-
--- 重新建立外键，指向新的 firearm 表
-ALTER TABLE modification
-    ADD CONSTRAINT fk_modification_firearm
-        FOREIGN KEY (firearm_id) REFERENCES firearm (id);
-
--- 序列所有权与名称修正
-ALTER SEQUENCE firearm_id_seq RENAME TO firearm_legacy_id_seq;
-ALTER SEQUENCE firearm_new_id_seq RENAME TO firearm_id_seq;
-ALTER SEQUENCE firearm_id_seq OWNED BY firearm.id;
-
--- 更新序列计数器
-SELECT setval('firearm_id_seq', coalesce(max(id), 1))
-FROM firearm;
-
--- 删除旧表
-DROP TABLE IF EXISTS firearm_legacy CASCADE;
\ No newline at end of file
diff --git a/src/main/resources/db/migration/V4__user.sql b/src/main/resources/db/migration/V4__user.sql
deleted file mode 100644
index 0215d26..0000000
--- a/src/main/resources/db/migration/V4__user.sql
+++ /dev/null
@@ -1,18 +0,0 @@
-DROP TABLE IF EXISTS app_user CASCADE;
-CREATE TABLE app_user
-(
-    id       BIGSERIAL    NOT NULL PRIMARY KEY,
-    username VARCHAR(255) NOT NULL,
-    email    VARCHAR(255) NOT NULL,
-    CONSTRAINT app_user_username_key UNIQUE (username),
-    CONSTRAINT app_user_email_key UNIQUE (email)
-);
-
-DROP TABLE IF EXISTS app_user_credential CASCADE;
-CREATE TABLE app_user_credential
-(
-    user_id    BIGINT       NOT NULL REFERENCES app_user (id),
-    provider   VARCHAR(255) NOT NULL,
-    credential VARCHAR(255) NOT NULL,
-    CONSTRAINT app_user_credential_pkey PRIMARY KEY (user_id, provider)
-);
\ No newline at end of file
diff --git a/src/main/resources/db/migration/V5__modification_accessories.sql b/src/main/resources/db/migration/V5__modification_accessories.sql
deleted file mode 100644
index 1450826..0000000
--- a/src/main/resources/db/migration/V5__modification_accessories.sql
+++ /dev/null
@@ -1,2 +0,0 @@
-ALTER TABLE modification
-    ADD accessories JSONB NOT NULL DEFAULT '[]';
\ No newline at end of file
diff --git a/web/.github/dependabot.yml b/web/.github/dependabot.yml
deleted file mode 100644
index 9a810e3..0000000
--- a/web/.github/dependabot.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
-
-version: 2
-updates:
-  - package-ecosystem: "npm"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    commit-message:
-      prefix: "chore: "
-
-    groups:
-      dependency-updates:
-        patterns: ["*"]
-        update-types: ["minor", "patch"]
-
-    ignore:
-      - dependency-name: "@types/node"
-        update-types: ["version-update:semver-major"]
-
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"
\ No newline at end of file
diff --git a/web/.gitignore b/web/.gitignore
deleted file mode 100644
index e0d19bc..0000000
--- a/web/.gitignore
+++ /dev/null
@@ -1,288 +0,0 @@
-### macOS
-# General
-.DS_Store
-.AppleDouble
-.LSOverride
-
-# Thumbnails
-._*
-
-# Files that might appear in the root of a volume
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-.com.apple.timemachine.donotpresent
-
-# Directories potentially created on remote AFP share
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-
-### Linux
-*~
-
-# temporary files which can be created if a process still has a handle open of a deleted file
-.fuse_hidden*
-
-# Metadata left by Dolphin file manager, which comes with KDE Plasma
-.directory
-
-# Linux trash folder which might appear on any partition or disk
-.Trash-*
-
-# .nfs files are created when an open file is removed but is still being accessed
-.nfs*
-
-# Log files created by default by the nohup command
-nohup.out
-
-### Windows
-
-# Windows thumbnail cache files
-Thumbs.db
-Thumbs.db:encryptable
-ehthumbs.db
-ehthumbs_vista.db
-
-# Dump file
-*.stackdump
-
-# Folder config file
-[Dd]esktop.ini
-
-# Recycle Bin used on file shares
-$RECYCLE.BIN/
-
-# Windows Installer files
-*.cab
-*.msi
-*.msix
-*.msm
-*.msp
-
-# Windows shortcuts
-*.lnk
-
-### JetBrains IDE
-# Covers JetBrains IDEs: IntelliJ, GoLand, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
-# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
-
-# User-specific stuff
-.idea
-
-# Gradle and Maven with auto-import
-*.iml
-*.ipr
-
-# File-based project format
-*.iws
-
-# IntelliJ
-out/
-
-# JIRA plugin
-atlassian-ide-plugin.xml
-
-# Crashlytics plugin (for Android Studio and IntelliJ)
-com_crashlytics_export_strings.xml
-crashlytics.properties
-crashlytics-build.properties
-fabric.properties
-
-# Editor-based HTTP Client
-http-client.private.env.json
-
-### Gradle
-.gradle
-**/build/
-!**/src/**/build/
-
-# Ignore Gradle GUI config
-gradle-app.setting
-
-# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
-!gradle-wrapper.jar
-
-# Avoid ignore Gradle wrappper properties
-!gradle-wrapper.properties
-
-# Cache of project
-.gradletasknamecache
-
-# Eclipse Gradle plugin generated files
-# Eclipse Core
-.project
-# JDT-specific (Eclipse Java Development Tools)
-.classpath
-
-### Java
-# Compiled class file
-*.class
-
-# Log file
-*.log
-
-# BlueJ files
-*.ctxt
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-replay_pid*
-
-### Node.js
-# Logs
-logs
-#*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-lerna-debug.log*
-
-# Diagnostic reports (https://nodejs.org/api/report.html)
-report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-*.lcov
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-
-# Snowpack dependency directory (https://snowpack.dev/)
-web_modules/
-
-# TypeScript cache
-*.tsbuildinfo
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Optional stylelint cache
-.stylelintcache
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variable files
-.env
-.env.*
-!.env.example
-
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-.parcel-cache
-
-# Next.js build output
-.next
-out
-
-# Nuxt.js build / generate output
-.nuxt
-dist
-
-# Gatsby files
-.cache/
-# Comment in the public line in if your project uses Gatsby and not Next.js
-# https://nextjs.org/blog/next-9-1#public-directory-support
-# public
-
-# vuepress build output
-.vuepress/dist
-
-# vuepress v2.x temp and cache directory
-.temp
-#.cache
-
-# Sveltekit cache directory
-.svelte-kit/
-
-# vitepress build output
-**/.vitepress/dist
-
-# vitepress cache directory
-**/.vitepress/cache
-
-# Docusaurus cache and generated files
-.docusaurus
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-# Firebase cache directory
-.firebase/
-
-# TernJS port file
-.tern-port
-
-# Stores VSCode versions used for testing VSCode extensions
-.vscode-test
-
-# yarn v3
-.pnp.*
-.yarn/*
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-
-# Vite logs files
-vite.config.js.timestamp-*
-vite.config.ts.timestamp-*
\ No newline at end of file
diff --git a/web/LICENCE b/web/LICENCE
deleted file mode 100644
index f88ade4..0000000
--- a/web/LICENCE
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT Licence
-
-Copyright (c) 2026 Zihlu Wang
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
\ No newline at end of file
diff --git a/web/README.md b/web/README.md
deleted file mode 100644
index cfc785a..0000000
--- a/web/README.md
+++ /dev/null
@@ -1,96 +0,0 @@
-# Delta Force Firearm Modification Codes
-
-Delta Force Firearm Modification Codes is a lightweight web app for browsing and filtering firearm modification codes for Delta Force.
-
-The site is built with Vite, React, TypeScript, Tailwind CSS, and React Router. It presents a searchable code library with filtering by weapon, mode, and tag, and includes quick copy support for each modification code.
-
-## Features
-
-- Browse a curated list of firearm modification codes.
-- Filter results by weapon, mode, and tag.
-- Copy modification codes directly from the interface.
-- Render large lists efficiently with window virtualisation.
-- Deploy as a static site.
-
-## Tech Stack
-
-- Vite
-- React 19
-- TypeScript
-- Tailwind CSS 4
-- React Router 7
-- @tanstack/react-virtual
-- Day.js
-
-## Getting Started
-
-### Prerequisites
-
-- Node.js 20 or later is recommended.
-- pnpm is required for dependency management and scripts.
-
-### Install dependencies
-
-```bash
-pnpm install
-```
-
-### Start the development server
-
-```bash
-pnpm dev
-```
-
-### Build for production
-
-```bash
-pnpm build
-```
-
-### Preview the production build locally
-
-```bash
-pnpm preview
-```
-
-## Available Scripts
-
-- `pnpm dev`: start the Vite development server.
-- `pnpm build`: run TypeScript compilation and create a production build.
-- `pnpm preview`: preview the production bundle locally.
-- `pnpm lint`: run project linting.
-- `pnpm deploy`: build and publish the site with `gh-pages`.
-
-## Project Structure
-
-```text
-src/
-	components/       Shared UI components
-	data/             Modification code dataset
-	init/             Application initialisation
-	layout/           Route layouts
-	page/             Route pages
-	router/           Router configuration
-```
-
-The current dataset is stored in `src/data/modification-codes.json`.
-
-## Deployment
-
-The repository is configured for static deployment. The `public/CNAME` file indicates the site is intended to be served on `onixbyte.dev`.
-
-To deploy:
-
-```bash
-pnpm deploy
-```
-
-## Contributing
-
-Contributions are welcome. If you want to improve the dataset, refine the filtering experience, or fix UI issues, open an issue or submit a pull request.
-
-When contributing, please keep documentation and user-facing copy in British English.
-
-## Licence
-
-This project is released under the MIT Licence. See `LICENCE` for details.
\ No newline at end of file
diff --git a/web/src/init/dayjs/index.ts b/web/src/init/dayjs/index.ts
deleted file mode 100644
index 35a84ed..0000000
--- a/web/src/init/dayjs/index.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import dayjs from "dayjs"
-import duration from "dayjs/plugin/duration"
-
-dayjs.extend(duration)
-
-console.log("Global Dayjs plugins initialised.")
\ No newline at end of file
diff --git a/web/src/init/index.ts b/web/src/init/index.ts
deleted file mode 100644
index fc6e552..0000000
--- a/web/src/init/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-import "./dayjs"
\ No newline at end of file