chore: remove stray server files from root directory on main branch

git-subtree-dir: web
git-subtree-mainline: 694bebe2c8
git-subtree-split: b000336d22

.gitea/workflows/build-and-deploy.yml

@@ -0,0 +1,86 @@
+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

.gitea/workflows/server-build-and-deploy.yml

@@ -0,0 +1,89 @@
+name: Build and Deploy
+
+on:
+  release:
+    types: [published]
+
+env:
+  APP_NAME: ahsarah-guide-server
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: server
+    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" >> "$GITHUB_OUTPUT"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: server
+          file: server/Dockerfile.ci
+          build-args: |
+            JAR_FILE=${{ 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: server/README.md

.gitea/workflows/web-build-and-deploy.yml

@@ -0,0 +1,115 @@
+name: Build and Deploy
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build release archive
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: web
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: pnpm
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 11
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build release archive
+        run: pnpm build:tar
+
+      - name: Clean up previous build artifacts on server
+        uses: appleboy/ssh-action@v1.0.3
+        with:
+          host: ${{ vars.DEPLOY_HOST }}
+          username: ${{ vars.DEPLOY_USER }}
+          port: ${{ vars.DEPLOY_PORT }}
+          key: ${{ secrets.DEPLOY_SSH_KEY }}
+          command: rm -rf /tmp/dist.tar.gz /tmp/dist.tar.gz/
+
+      - name: Upload artifact to server
+        uses: appleboy/scp-action@v0.1.7
+        with:
+          host: ${{ vars.DEPLOY_HOST }}
+          username: ${{ vars.DEPLOY_USER }}
+          port: ${{ vars.DEPLOY_PORT }}
+          key: ${{ secrets.DEPLOY_SSH_KEY }}
+          source: "dist.tar.gz"
+          target: "/tmp/"
+
+  upload-release-asset:
+    name: Upload to Gitea Release
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download artifact from server
+        env:
+          DEPLOY_HOST: ${{ vars.DEPLOY_HOST }}
+          DEPLOY_USER: ${{ vars.DEPLOY_USER }}
+          DEPLOY_PORT: ${{ vars.DEPLOY_PORT }}
+          DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+        run: |
+          set -e
+          SSH_DIR="${RUNNER_TEMP}/ssh"
+          mkdir -p "$SSH_DIR"
+          chmod 700 "$SSH_DIR"
+          printf '%s\n' "$DEPLOY_SSH_KEY" > "$SSH_DIR/key"
+          chmod 600 "$SSH_DIR/key"
+          scp -i "$SSH_DIR/key" \
+              -P "$DEPLOY_PORT" \
+              -o StrictHostKeyChecking=accept-new \
+              -o UserKnownHostsFile="$SSH_DIR/known_hosts" \
+              "${DEPLOY_USER}@${DEPLOY_HOST}:/tmp/dist.tar.gz" \
+              ./dist.tar.gz
+          rm -rf "$SSH_DIR"
+
+      - name: Upload release asset via Gitea API
+        run: |
+          set -e
+          RELEASE_ID=$(jq -r '.release.id' "$GITEA_EVENT_PATH")
+          URL="${GITEA_SERVER_URL}/api/v1/repos/${GITEA_REPOSITORY}/releases/${RELEASE_ID}/assets?name=dist.tar.gz"
+          curl -fsSL \
+            -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/gzip" \
+            --data-binary "@dist.tar.gz" \
+            "${URL}"
+
+  deploy-to-server:
+    name: Deploy to onixbyte.cn
+    needs: [build, upload-release-asset]
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Extract archive and deploy
+        uses: appleboy/ssh-action@v1.0.3
+        with:
+          host: ${{ vars.DEPLOY_HOST }}
+          username: ${{ vars.DEPLOY_USER }}
+          port: ${{ vars.DEPLOY_PORT }}
+          key: ${{ secrets.DEPLOY_SSH_KEY }}
+          script_stop: true
+          script: |
+            set -e
+            DEPLOY_PATH="${{ vars.DEPLOY_PATH }}"
+            mkdir -p "$DEPLOY_PATH"
+            rm -rf "$DEPLOY_PATH"/*
+            tar -xzf /tmp/dist.tar.gz -C "$DEPLOY_PATH" --strip-components=1
+            chown -R caddy:caddy "$DEPLOY_PATH"
+            rm -f /tmp/dist.tar.gz

.github/workflows/build-and-deploy.yml

@@ -1,86 +0,0 @@
-name: Build and Deploy
-
-on:
-  release:
-    types: [published]
-
-env:
-  APP_NAME: delta-force-guide-server
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
-jobs:
-  # ================================================================
-  # Single Job: Build, Upload JAR to Release, and Push to GHCR
-  # ================================================================
-  build-and-release:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-      packages: write
-    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: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
-
-      # 使用 Release Tag 做为 Gradle 属性传入
-      - name: Build with Gradle
-        run: ./gradlew bootJar -x test -PartefactVersion="${{ github.event.release.tag_name }}"
-
-      - name: Resolve JAR file path
-        id: jar
-        run: |
-          JAR_PATH=$(find build/libs -name '*.jar' | head -1)
-          echo "file=$JAR_PATH" >> "$GITHUB_OUTPUT"
-
-      # 上传 JAR 包到 GitHub Release 中
-      - name: Upload JAR to GitHub Release
-        uses: svenstaro/upload-release-action@v2
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: ${{ steps.jar.outputs.file }}
-          asset_name: ${{ github.event.repository.name }}-${{ github.event.release.tag_name }}.jar
-          tag: ${{ github.event.release.tag_name }}
-          overwrite: true
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      # 登录到 GitHub Container Registry (GHCR)
-      - name: Log in to GHCR
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      # 镜像打标签准备
-      - name: Generate image tags
-        id: meta
-        run: |
-          OWNER_LC=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
-          REPO_LC=$(echo "${{ github.event.repository.name }}" | tr '[:upper:]' '[:lower:]')
-          echo "tag_version=ghcr.io/$OWNER_LC/$REPO_LC:${{ github.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
-          echo "tag_latest=ghcr.io/$OWNER_LC/$REPO_LC:latest" >> "$GITHUB_OUTPUT"
-
-      # 构建并上传镜像到 GHCR
-      - 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 }}
-          push: true
-          tags: |
-            ${{ steps.meta.outputs.tag_version }}
-            ${{ steps.meta.outputs.tag_latest }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-

.gitignore

@@ -97,7 +97,7 @@ fabric.properties
 # Editor-based HTTP Client
 http-client.private.env.json
 
-### Server
+### Java
 # Compiled class file
 *.class
 
@@ -111,26 +111,18 @@ http-client.private.env.json
 .mtj.tmp/
 
 # Package Files #
+*.jar
 *.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/
@@ -143,13 +135,6 @@ test/
 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
@@ -157,3 +142,101 @@ gradle-app.setting
 .classpath
 
 gradle.properties
+
+### Node.js
+# Logs
+logs
+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
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# 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
+
+# Vite logs files
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v3
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+
+### Server-specific
+# Config
+server/config/*.yml
+server/config/*.yaml
+server/config/*.properties
+
+# Tests
+server/test/
+
+# frp config
+frpc.toml
+
+### Claude Code
+.claude/settings.local.json
+.claude/memory/
+.claude/plans/
+.claude/worktrees/
+.claude/scheduled_tasks.json

.gitlab-ci.yml

@@ -1,34 +0,0 @@
-variables:
-  GRADLE_OPTS: -Dorg.gradle.daemon=false
-  DOCKER_HOST: unix:///var/run/docker.sock
-
-stages:
-  - release
-
-release:
-  stage: release
-  image: amazoncorretto:21-alpine
-  cache:
-    key: gradle
-    paths:
-      - .gradle/wrapper
-      - .gradle/caches
-  before_script:
-    - chmod +x gradlew
-    - apk add --no-cache docker-cli
-  script:
-    - ./gradlew bootJar -x test -PartefactVersion="$CI_COMMIT_TAG"
-    - JAR_FILE=$(find build/libs -name '*.jar' | head -1)
-    - echo "Building Docker image for tag $CI_COMMIT_TAG with JAR $JAR_FILE"
-    - docker build
-        -f Dockerfile.ci
-        --build-arg JAR_FILE="$JAR_FILE"
-        -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-        .
-    - docker tag "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG" "$CI_REGISTRY_IMAGE:latest"
-    - echo "Pushing image $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-    - docker login "$CI_REGISTRY" -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD"
-    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-    - docker push "$CI_REGISTRY_IMAGE:latest"
-  rules:
-    - if: $CI_COMMIT_TAG

CLAUDE.md

@@ -2,16 +2,25 @@
 
 This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
 
-## Coding Standards
+## Monorepo Structure
+
+- `server/` — Java 21 + Spring Boot 3.5 + Gradle (Kotlin DSL) REST API backend
+- `web/` — React 19 + Vite 8 + TypeScript + Ant Design 6 + Tailwind CSS 4 frontend
+
+## Server
+
+### 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
+### Build & Test Commands
 
 ```bash
+cd server
+
 # Build the project (skip tests)
 ./gradlew build -x test
 
@@ -19,10 +28,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 ./gradlew test
 
 # Run a single test class
-./gradlew test --tests "com.onixbyte.deltaforceguide.service.PasswordEncoderTest"
+./gradlew test --tests "com.onixbyte.ahsarahguide.service.PasswordEncoderTest"
-
-# Run a specific test method
-./gradlew test --tests "com.onixbyte.deltaforceguide.service.PasswordEncoderTest.generatePassword"
 
 # Build the full JAR
 ./gradlew bootJar
@@ -30,14 +36,14 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 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
+### Code Architecture
 
-**Delta Force Guide Server** — A REST API backend for managing Delta Force game firearm builds/modifications.
+**Ahsarah Guide Server** — A REST API backend for managing firearm builds/modifications.
 
 ### Package structure
 
 ```
-com.onixbyte.deltaforceguide
+com.onixbyte.ahsarahguide
 ├── 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)
@@ -65,16 +71,9 @@ com.onixbyte.deltaforceguide
 - **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.
+- **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.
 - **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).
+- **Flyway migrations**: SQL migrations in `src/main/resources/db/migration/`.
-
-### 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
 
@@ -94,16 +93,61 @@ com.onixbyte.deltaforceguide
 
 Conventional commits: `feat:`, `chore:`, `fix:`. Messages are in English, present tense imperative style.
 
-### External dependencies
+---
 
-- **DB**: PostgreSQL (via Flyway migrations), H2 in test
+## Web
-- **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
+### Commands
 
-- `dev`: Enables Swagger UI, connects to dev DB/Redis at `dfguide.onixbyte.cn`. Config in `config/application-dev.yaml`.
+```bash
-- Default profile: Used for production, no Swagger, connects to production datasource.
+cd web
+
+pnpm install          # Install dependencies (pnpm required)
+pnpm dev              # Start Vite dev server
+pnpm build            # TypeScript check + Vite production build
+pnpm build:tar        # Build + tar.gz archive (used by CI)
+pnpm preview          # Preview production build locally
+pnpm lint             # ESLint
+```
+
+No test suite exists in this project.
+
+### Architecture
+
+Chinese-language SPA for browsing and managing Ahsarah Guide (阿萨拉向导). The frontend talks to the Spring Boot backend via REST APIs.
+
+**App shell** (`src/main.tsx`): React 19 + React Router 7 + Redux Toolkit + Ant Design 6 + Tailwind CSS 4. Wraps the router in Redux `Provider` → `PersistGate` (Redux Persist) → Ant Design `StyleProvider`/`ConfigProvider` (locale `zh_CN`).
+
+**Routing** (`src/router/index.tsx`): Two layout groups:
+- `HeroLayout` (nav header + footer) for `/`, `/firearms`, `/mod-codes`
+- `EmptyLayout` (minimal) for `/login`
+All page components are lazy-loaded via `createBrowserRouter` + `lazy()`.
+
+**State** (`src/store/`): Redux Toolkit with two slices — `auth` (current user) and `firearms` (paginated firearm list). State is persisted to `localStorage` or `sessionStorage` based on the `VITE_REDUX_STORAGE` env var. Use typed hooks from `src/hooks/store.ts` (`useAppDispatch`, `useAppSelector`).
+
+**API layer** (`src/api/`): Axios instance (`src/shared/web-client/`) with base URL from `VITE_API_BASE_URL`, 10s timeout, and credentials. API modules: `FirearmApi`, `ModificationApi`, `TagApi`, `AuthApi`.
+
+**Pages**:
+- `FirearmsPage` — paginated card grid with type filter, create/edit modals (admin-only), delete with popconfirm
+- `ModCodesPage` — paginated list with tag multi-select and firearmId query param filter, create/edit modals with nested accessory/tuning form lists
+- `LoginPage` — simple username/password form, dispatches `setCurrentUser` on success
+
+**Shared form components**: `FirearmForm` and `ModificationForm` are reused by both create and edit modals. `ModificationForm` fetches all firearms for its weapon selector and supports a `lockFirearmId` prop that disables the selector (used when navigating from a specific firearm).
+
+**Type system** (`src/types/`): `Firearm` with weapon stats, `Modification` with nested `Accessory[]` → `Tuning[]`, `Page<T>` for paginated API responses, `User` for auth.
+
+**Vite config**: Alias `@` → `./src`. Plugins: React, Tailwind CSS 4, port checker. Build uses rolldown with manual chunk splitting for React, Redux, Ant Design, React Router, and rc-* packages.
+
+**Styling**: Tailwind CSS 4 with CSS layers (`theme, base, antd, components, utilities`). Responsive grid for mod code cards (1→2→3→4 columns). Prettier: 100 print width, no semicolons, double quotes, trailing commas ES5.
+
+### Environment variables
+
+```
+VITE_API_BASE_URL=/api        # Backend API base URL
+VITE_REDUX_STORAGE=local      # "local" or "session" for Redux persistence
+```
+
+### Contributing conventions
+
+- User-facing copy, documentation, and code comments in British English
+- Commit messages use `chore:` prefix for dependency updates (per Dependabot config)

Dockerfile.ci

@@ -1,7 +0,0 @@
-FROM amazoncorretto:21-alpine
-WORKDIR /app
-
-ARG JAR_FILE
-COPY ${JAR_FILE} app.jar
-
-ENTRYPOINT ["java", "-jar", "app.jar"]

README.md

@@ -1,150 +1,38 @@
-# Delta Force Guide Server
+# Ahsarah Guide (阿萨拉向导)
 
-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.
+Ahsarah Guide is a full-stack web application for browsing and managing firearm modification guides.
 
+## Monorepo Structure
 
-## Tech Stack
+| Directory | Stack | Description |
-
+|-----------|-------|-------------|
-| Layer     | Technology                                                 |
+| `server/` | Java 21 + Spring Boot 3.5 + Gradle | REST API backend |
-|-----------|------------------------------------------------------------|
+| `web/` | React 19 + Vite 8 + TypeScript + Ant Design 6 | Web frontend |
-| 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
+### Server
 
-- JDK 21 (Amazon Corretto recommended)
+Prerequisites: JDK 21 (Amazon Corretto), PostgreSQL, Redis
-- PostgreSQL
-- Redis
-
-### Configure
-
-Copy and customise the development config:
 
 ```bash
-cp config/application-prod.yaml.example \
+cd server
-   config/application-dev.yaml
+cp config/application-prod.yaml.example config/application-dev.yaml
-```
+# Edit config/application-dev.yaml with your database and Redis credentials
-
-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
+java -jar build/libs/ahsarah-guide-server-*.jar
 ```
 
-### Run
+### Web
+
+Prerequisites: Node.js 20+, pnpm
 
 ```bash
-SPRING_PROFILES_ACTIVE=prod java -jar build/libs/delta-force-guide-server-$version.jar
+cd web
+pnpm install
+pnpm dev
 ```
 
-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.
+MIT. See [LICENCE](LICENCE) for details.
-

build.gradle.kts

@@ -1,65 +0,0 @@
-plugins {
-    java
-    alias(libs.plugins.spring.boot)
-    alias(libs.plugins.spring.dependency.management)
-}
-
-val artefactVersion: 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.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.test {
-    useJUnitPlatform()
-}

config/application-prod.yaml.example

@@ -1,55 +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: 6hLFVqfGPviTYukn # Uncomment if password is necessary
-
-logging:
-  pattern:
-    # dateformat: dd MMM yyyy HH:mm:ss.SSS # Modify this for custom date format.
-
-app:
-  common:
-    version: 1.3.0.8-dev # Application version, you can change to any version you like, used for communication with frontend.
-  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
-  cookie: # Cookie settings.
-    http-only: true
-    secure: false
-    same-site: lax
-    path: '/'
-    max-age: PT2H
-
-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).

server/.gitattributes

@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary

server/.gitea/workflows/build-and-deploy.yml

@@ -0,0 +1,86 @@
+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

server/.gitignore

@@ -0,0 +1,162 @@
+### 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

server/CLAUDE.md

@@ -0,0 +1,109 @@
+# 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.

server/Dockerfile

@@ -6,5 +6,5 @@ RUN chmod +x ./gradlew && \
 
 FROM amazoncorretto:21-alpine AS runner
 WORKDIR /app
-COPY --from=builder /app/build/libs/delta-force-guide-server-1.0.0.jar app.jar
+COPY --from=builder /app/build/libs/ahsarah-guide-server-*.jar app.jar
 ENTRYPOINT ["java", "-jar", "app.jar"]

server/Dockerfile.ci

@@ -0,0 +1,19 @@
+FROM amazoncorretto:21-alpine
+WORKDIR /app
+
+ARG JAR_FILE
+ARG IMAGE_VERSION=dev
+ARG IMAGE_VENDOR=OnixByte
+ARG BUILD_DATE
+
+COPY ${JAR_FILE} app.jar
+
+LABEL org.opencontainers.image.title="ahsarah-guide-server" \
+      org.opencontainers.image.description="REST API backend for Ahsarah Guide" \
+      org.opencontainers.image.version="${IMAGE_VERSION}" \
+      org.opencontainers.image.vendor="${IMAGE_VENDOR}" \
+      org.opencontainers.image.source="https://onixbyte.dev/onixbyte/ahsarah-guide" \
+      org.opencontainers.image.licenses="MIT" \
+      org.opencontainers.image.created="${BUILD_DATE}"
+
+ENTRYPOINT ["java", "-jar", "app.jar"]

server/LICENCE

@@ -0,0 +1,21 @@
+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.

server/README.md

@@ -0,0 +1,150 @@
+# 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.
+

server/build.gradle.kts

@@ -0,0 +1,64 @@
+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.ahsarahguide"
+version = artefactVersion
+
+tasks.withType<JavaCompile> {
+    options.encoding = "UTF-8"
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+dependencies {
+    // BOMs are imported as platforms, so they cannot be bundled.
+    implementation(platform(libs.aws.sdk.bom))
+    implementation(platform(libs.onixbyte.versionCatalogue))
+
+    implementation(libs.bundles.utilities)
+    implementation(libs.bundles.onixbyte)
+    implementation(libs.bundles.web)
+    implementation(libs.bundles.persistence)
+    implementation(libs.bundles.security)
+    implementation(libs.bundles.cache)
+    implementation(libs.bundles.observability)
+    implementation(libs.bundles.mail)
+    implementation(libs.bundles.aws)
+    implementation(libs.bundles.docs)
+
+    // Annotation processor for @ConfigurationProperties; kept out of bundles.
+    implementation(libs.spring.boot.configurationProcessor)
+
+    runtimeOnly(libs.postgres.driver)
+
+    testImplementation(libs.bundles.testing)
+    testRuntimeOnly(libs.bundles.testRuntime)
+}
+
+tasks.processResources {
+    filesMatching("application.yaml") {
+        println("appVersion = ${artefactVersion}, channel = ${buildChannel}, vendor = ${vendor}")
+        expand(
+            "appVersion" to artefactVersion,
+            "channel" to buildChannel,
+            "vendor" to vendor
+        )
+    }
+}
+
+tasks.test {
+    useJUnitPlatform()
+}

server/config/application-prod.yaml.example

@@ -0,0 +1,131 @@
+spring:
+  datasource:
+    # PostgreSQL connection URL.
+    url: jdbc:postgresql://localhost:5432/dfguide_dev
+
+    # PostgreSQL username.
+    username: postgres
+
+    # PostgreSQL password.
+    password: 123456
+
+    # PostgreSQL JDBC driver class name.
+    driver-class-name: org.postgresql.Driver
+  data:
+    redis:
+      # Redis server host.
+      host: localhost
+
+      # Redis server port.
+      port: 6379
+
+      # Redis database index.
+      #
+      # Default to 0.
+      database: 0
+
+      # Redis server password.
+      #
+      # Uncomment if the server requires a password.
+      #
+      # password: qwerty
+
+logging:
+  pattern:
+    # Date format used in log output. Uncomment to use a custom format.
+    #
+    # Default to the date format provided by Spring Boot.
+    # dateformat: dd MMM yyyy HH:mm:ss.SSS
+
+app:
+  cookie:
+    # Whether the cookie is accessible from JavaScript. Keep `true` to mitigate XSS attacks.
+    http-only: true
+
+    # Whether the cookie is only sent over HTTPS. Set to `true` in production is recommended.
+    secure: true
+
+    # SameSite policy of the cookie.
+    #
+    # NOTE that `none` requires `secure` to be `true`.
+    same-site: none
+
+    # Cookie path.
+    path: '/'
+
+    # Cookie max age.
+    max-age: P1D
+  cors:
+    # Cross-origin allowed origins. Add your custom origins here.
+    allowed-origins: []
+
+    # Whether to allow credentials (cookies, authorisation headers) in cross-origin requests.
+    #
+    # Must be `true` since the application uses cookies for authentication. Change it only when
+    # the authentication mechanism no longer relies on cookies.
+    allow-credentials: true
+
+    # Whether to allow requests originating from private network addresses.
+    allow-private-network: false
+
+    # Headers allowed in cross-origin requests.
+    allowed-headers:
+      - "Content-Type"
+      - "Authorization"
+
+    # HTTP methods allowed in cross-origin requests.
+    #
+    # Methods are matched against Spring's HttpMethod, so they must be written in UPPER CASE.
+    # e.g., GET, POST, PUT, PATCH, DELETE, OPTIONS
+    allowed-methods:
+      - GET
+      - POST
+      - PUT
+      - PATCH
+      - DELETE
+
+    # Response headers exposed to the browser in cross-origin responses.
+    exposed-headers:
+      - "Content-Type"
+      - "Authorization"
+
+    # How long the CORS pre-flight response may be cached by the browser.
+    #
+    # Default to PT2H (2 hours).
+    max-age: PT2H
+  jwt:
+    # Issuer identifier, domain name is recommended.
+    issuer: ahsarah-guide.local
+
+    # Token signing secret, a 32-byte long or longer string is recommended.
+    secret: qwertyuiopasdfghjklzxcvbnm123456
+
+    # Token valid duration.
+    #
+    # Default to PT2H (2 hours).
+    valid-time: PT2H
+
+    # Token renew threshold.
+    #
+    # If valid time of this token is less than this value, then a new token will be delivered to
+    # the user.
+    #
+    # Default to PT5M (5 min).
+    renew-threshold: PT5M
+  webhook:
+    github:
+      # GitHub webhook secret. Used to verify the signature of incoming webhook requests.
+      secret: 123456
+
+      # GitHub usernames allowed to trigger webhook events.
+      allowed-users: [ octocat, onixbyte ]
+
+springdoc:
+  api-docs:
+    # Whether to expose the OpenAPI documentation. Set to `false` if you do not need it
+    # (recommended in production mode).
+    enabled: true
+  swagger-ui:
+    # Whether to expose the Swagger UI. Set to `false` if you do not need it
+    # (recommended in production mode).
+    enabled: true

server/gradle/libs.versions.toml

@@ -4,10 +4,9 @@ javaJwtVersion = "4.5.1"
 postgresDriverVersion = "42.7.9"
 h2Version = "2.2.224"
 springBootVersion = "3.5.13"
-springSecurityVersion = "6.5.2"
 reactorVersion = "3.7.8"
 junitPlatformVersion = "1.12.2"
-onixbyteVersion = "3.3.0"
+onixbyteVersion = "3.4.0"
 onixbyteCaptcha = "1.1.0"
 onixbyteRegions = "2025.12.0"
 awsSdkVersion = "2.25.48"
@@ -32,6 +31,7 @@ jackson-jsr310 = { group = "com.fasterxml.jackson.datatype", name = "jackson-dat
 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" }
@@ -42,12 +42,10 @@ mybatis-starter-core = { group = "org.mybatis.spring.boot", name = "mybatis-spri
 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" }
-mysql-driver = { group = "com.mysql", name = "mysql-connector-j" }
 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" }
-flyway-mysql = { group = "org.flywaydb", name = "flyway-mysql" }
 
 # Spring Boot Core & Web
 spring-boot-starter-web = { group = "org.springframework.boot", name = "spring-boot-starter-web" }
@@ -61,6 +59,11 @@ spring-boot-actuator = { group = "org.springframework.boot", name = "spring-boot
 spring-boot-starter-security = { group = "org.springframework.boot", name = "spring-boot-starter-security" }
 jwt-core = { group = "com.auth0", name = "java-jwt", version.ref = "javaJwtVersion" }
 
+# Java Mail & Templating
+spring-boot-starter-mail = { module = "org.springframework.boot:spring-boot-starter-mail" }
+spring-boot-starter-thymeleaf = { group = "org.springframework.boot", name = "spring-boot-starter-thymeleaf" }
+thymeleaf-extras-springsecurity6 = { group = "org.thymeleaf.extras", name = "thymeleaf-extras-springsecurity6" }
+
 # Spring Doc
 spring-boot-starter-doc = { group = "org.springdoc", name = "springdoc-openapi-starter-webmvc-ui", version.ref = "springDocVersion" }
 
@@ -75,6 +78,89 @@ reactor-test = { group = "io.projectreactor", name = "reactor-test", version.ref
 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" }
 
+[bundles]
+# General utilities
+utilities = [
+    "jspecify-core",
+    "commons-io",
+    "commons-lang",
+    "commons-collections",
+    "jackson-jsr310",
+]
+
+# Onixbyte ecosystem (the version-catalogue BOM stays out of bundles, it is imported as a platform)
+onixbyte = [
+    "onixbyte-tuple",
+    "onixbyte-commonToolbox",
+    "onixbyte-cryptoToolbox",
+    "onixbyte-mathToolbox",
+    "onixbyte-identityGenerator",
+    "onixbyte-captcha",
+    "onixbyte-regions",
+]
+
+# Web layer
+web = [
+    "spring-boot-starter-web",
+    "spring-boot-starter-webFlux",
+    "spring-boot-starter-validation",
+]
+
+# Persistence and database
+persistence = [
+    "spring-boot-starter-jpa",
+    "mybatis-starter-core",
+    "hypersistence-core",
+    "flyway-core",
+    "flyway-postgresql",
+]
+
+# Security and authentication
+security = [
+    "spring-boot-starter-security",
+    "jwt-core",
+]
+
+# Caching (Redis)
+cache = [
+    "spring-boot-starter-redis",
+    "spring-boot-starter-cache",
+]
+
+# Observability
+observability = [
+    "spring-boot-actuator",
+]
+
+# Mail and templating
+mail = [
+    "spring-boot-starter-mail",
+    "spring-boot-starter-thymeleaf",
+    "thymeleaf-extras-springsecurity6",
+]
+
+# AWS cloud services
+aws = [
+    "aws-sdk-s3",
+]
+
+# API documentation
+docs = [
+    "spring-boot-starter-doc",
+]
+
+# Testing
+testing = [
+    "spring-boot-starter-test",
+    "spring-security-test",
+    "reactor-test",
+    "mybatis-starter-test",
+]
+testRuntime = [
+    "h2-database",
+    "junit-launcher",
+]
+
 [plugins]
 spring-boot = { id = "org.springframework.boot", version.ref = "springBootVersion" }
 spring-dependency-management = { id = "io.spring.dependency-management", version.ref = "springDependencyManagementVersion" }

server/settings.gradle.kts

@@ -11,4 +11,4 @@ dependencyResolutionManagement {
     }
 }
 
-rootProject.name = "delta-force-guide-server"
+rootProject.name = "ahsarah-guide-server"

server/src/main/java/com/onixbyte/ahsarahguide/AhsarahGuideApplication.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableAsync;
+
+/**
+ * Entry point for the Ahsarah Guide Server application.
+ *
+ * @author zihluwang
+ */
+@EnableAsync
+@SpringBootApplication
+public class AhsarahGuideApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AhsarahGuideApplication.class, args);
+    }
+
+}

server/src/main/java/com/onixbyte/ahsarahguide/client/EmailClient.java

@@ -0,0 +1,109 @@
+package com.onixbyte.ahsarahguide.client;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.InternetAddress;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+
+@Component
+public class EmailClient {
+
+    private static final Logger log = LoggerFactory.getLogger(EmailClient.class);
+
+    private final JavaMailSender mailSender;
+
+    private final TemplateEngine emailTemplateEngine;
+
+    @Autowired
+    public EmailClient(
+            JavaMailSender mailSender,
+            TemplateEngine emailTemplateEngine
+    ) {
+        this.mailSender = mailSender;
+        this.emailTemplateEngine = emailTemplateEngine;
+    }
+
+    private String fromAddress;
+
+    @Autowired
+    public void setFromAddress(@Value("${spring.mail.username}") String fromAddress) {
+        this.fromAddress = fromAddress;
+    }
+
+    /**
+     * Send a template-based HTML email asynchronously.
+     *
+     * @param toRecipient  recipient email address
+     * @param subject      subject line
+     * @param templateName template name (without .html extension, under mail-templates/)
+     * @param variables    context variables required by the template
+     */
+    @Async
+    public void sendTemplateMail(String toRecipient, String subject, String templateName, Map<String, Object> variables) {
+        try {
+            // Render HTML content using the dedicated email template engine
+            var context = new Context();
+            if (variables != null && !variables.isEmpty()) {
+                context.setVariables(variables);
+            }
+            var htmlBody = emailTemplateEngine.process(templateName, context);
+
+            log.debug("htmlBody={}", htmlBody);
+
+            // Build the MIME message
+            var message = mailSender.createMimeMessage();
+            var helper = new MimeMessageHelper(
+                    message,
+                    MimeMessageHelper.MULTIPART_MODE_MIXED_RELATED,
+                    StandardCharsets.UTF_8.name()
+            );
+
+            helper.setFrom(new InternetAddress(fromAddress, "阿萨拉向导", StandardCharsets.UTF_8.name()));
+            helper.setTo(toRecipient);
+            helper.setSubject(subject);
+            helper.setText(htmlBody, true);
+
+            // Dispatch the message
+            mailSender.send(message);
+            log.info("Successfully dispatched email to: [{}] with subject: [{}]", toRecipient, subject);
+
+        } catch (MessagingException | UnsupportedEncodingException ex) {
+            log.error("Failed to construct or send email to: [{}], subject: [{}]", toRecipient, subject, ex);
+            // Handle or rethrow custom business exception if required
+        } catch (Exception ex) {
+            log.error("Unexpected error occurred while processing email for: [{}]", toRecipient, ex);
+        }
+    }
+
+    /**
+     * Convenience method specifically for sending registration/login verification codes.
+     *
+     * @param toRecipient   target recipient email
+     * @param username      display username
+     * @param code          verification code string
+     * @param expireMinutes expiration time in minutes
+     */
+    @Async
+    public void sendVerificationCode(String toRecipient, String username, String code, int expireMinutes) {
+        var subject = "【阿萨拉向导】账号注册验证码";
+        var variables = Map.<String, Object>of(
+                "username", username,
+                "code", code,
+                "expireMinutes", expireMinutes
+        );
+
+        sendTemplateMail(toRecipient, subject, "verification-code", variables);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/client/TokenClient.java

@@ -0,0 +1,75 @@
+package com.onixbyte.ahsarahguide.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.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.properties.TokenProperties;
+import com.onixbyte.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/AppConfig.java

@@ -0,0 +1,48 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.interceptor.GitHubWebhookInterceptor;
+import com.onixbyte.ahsarahguide.interceptor.TrafficInterceptor;
+import com.onixbyte.ahsarahguide.properties.AppProperties;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUserArgumentResolver;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.util.List;
+
+@Configuration
+@EnableConfigurationProperties(AppProperties.class)
+public class AppConfig implements WebMvcConfigurer {
+
+    private final TrafficInterceptor trafficInterceptor;
+
+    private final GitHubWebhookInterceptor gitHubWebhookInterceptor;
+
+    private final CurrentUserArgumentResolver currentUserArgumentResolver;
+
+    @Autowired
+    public AppConfig(
+            TrafficInterceptor trafficInterceptor,
+            GitHubWebhookInterceptor gitHubWebhookInterceptor,
+            CurrentUserArgumentResolver currentUserArgumentResolver
+    ) {
+        this.trafficInterceptor = trafficInterceptor;
+        this.gitHubWebhookInterceptor = gitHubWebhookInterceptor;
+        this.currentUserArgumentResolver = currentUserArgumentResolver;
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(trafficInterceptor);
+        registry.addInterceptor(gitHubWebhookInterceptor)
+                .addPathPatterns("/webhooks/github");
+    }
+
+    @Override
+    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {
+        resolvers.add(currentUserArgumentResolver);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/CacheConfig.java

@@ -0,0 +1,102 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.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;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/CorsConfig.java

@@ -0,0 +1,49 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.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;
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/EmailTemplateConfig.java

@@ -0,0 +1,37 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.captcha.text.TextProducer;
+import com.onixbyte.captcha.text.impl.DefaultTextProducer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.spring6.SpringTemplateEngine;
+import org.thymeleaf.templatemode.TemplateMode;
+import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
+import org.thymeleaf.templateresolver.ITemplateResolver;
+
+import java.nio.charset.StandardCharsets;
+
+@Configuration
+public class EmailTemplateConfig {
+
+    @Bean
+    public TemplateEngine emailTemplateEngine() {
+        var resolver = new ClassLoaderTemplateResolver();
+        // Template files are located under src/main/resources/mail-templates/
+        resolver.setPrefix("mail-templates/");
+        resolver.setSuffix(".html");
+        resolver.setTemplateMode(TemplateMode.HTML);
+        resolver.setCharacterEncoding(StandardCharsets.UTF_8.name());
+        resolver.setCacheable(true); // Enable caching for the production environment
+
+        var templateEngine = new SpringTemplateEngine();
+        templateEngine.addTemplateResolver(resolver);
+        return templateEngine;
+    }
+
+    @Bean
+    public TextProducer textProducer() {
+        return DefaultTextProducer.builder().build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/FilterConfig.java

@@ -0,0 +1,21 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.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;
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/JacksonConfig.java

@@ -0,0 +1,25 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.onixbyte.ahsarahguide.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);
+        };
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/MyBatisConfig.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.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.ahsarahguide.mapper"})
+public class MyBatisConfig {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/OpenApiConfiguration.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.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 = "Ahsarah Guide Server",
+                description = "API for Ahsarah Guide",
+                version = "1.4.0",
+                contact = @Contact(
+                        name = "Zihlu Wang",
+                        email = "zihlu.wang@onixbyte.com"
+                ),
+                license = @License(
+                        name = "MIT",
+                        url = "https://onixbyte.dev/onixbyte/ahsarah-guide/raw/branch/main/LICENCE"
+                )
+        )
+)
+@Configuration
+public class OpenApiConfiguration {
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/SecurityConfig.java

@@ -0,0 +1,113 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import com.onixbyte.ahsarahguide.exeption.ForbiddenException;
+import com.onixbyte.ahsarahguide.exeption.UnauthorisedException;
+import com.onixbyte.ahsarahguide.filter.TokenAuthenticationFilter;
+import com.onixbyte.ahsarahguide.properties.CookieProperties;
+import com.onixbyte.ahsarahguide.properties.TokenProperties;
+import com.onixbyte.ahsarahguide.security.provider.UsernamePasswordAuthenticationProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+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 {
+
+    private static final Logger log = LoggerFactory.getLogger(SecurityConfig.class);
+
+    /**
+     * Configures the HTTP security filter chain including endpoint authorisation and JWT filter.
+     *
+     * @param httpSecurity 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()
+                )
+                .exceptionHandling(customiser -> customiser
+                        .authenticationEntryPoint((request, response, authException) -> {
+                            log.error("Unauthenticated request: {}", request, authException);
+                            throw new UnauthorisedException("请先登录");
+                        })
+                        .accessDeniedHandler((request, response, accessDeniedException) -> {
+                            log.error("Denied request: {}", request, accessDeniedException);
+                            throw new ForbiddenException("权限不足");
+                        })
+                )
+                .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();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/SpringDataConfig.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.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.ahsarahguide.repository"})
+public class SpringDataConfig {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/WebhookConfig.java

@@ -0,0 +1,10 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.properties.GitHubWebhookProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableConfigurationProperties({GitHubWebhookProperties.class})
+public class WebhookConfig {
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/AdminController.java

@@ -0,0 +1,59 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ManageRoleRequest;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.service.UserService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.Positive;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+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.RestController;
+
+/**
+ * REST controller for administrative user and role management.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "管理员", description = "管理员用户与角色管理")
+@RestController
+@RequestMapping("/admin")
+@Validated
+@RequiresAuth
+public class AdminController {
+
+    private final UserService userService;
+
+    public AdminController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Operation(description = "为用户分配角色（仅超级管理员可操作）")
+    @PreAuthorize("hasRole('SUPER_USER')")
+    @PutMapping("/users/{id}/roles")
+    public ResponseEntity<Void> assignRole(
+            @PathVariable @Positive(message = "用户ID必须为正数") Long id,
+            @Valid @RequestBody ManageRoleRequest request
+    ) {
+        userService.assignRole(id, request.role());
+        return ResponseEntity.noContent().build();
+    }
+
+    @Operation(description = "移除用户角色（仅超级管理员可操作）")
+    @PreAuthorize("hasRole('SUPER_USER')")
+    @DeleteMapping("/users/{id}/roles/{role}")
+    public ResponseEntity<Void> removeRole(
+            @PathVariable @Positive(message = "用户ID必须为正数") Long id,
+            @PathVariable String role
+    ) {
+        userService.removeRole(id, role);
+        return ResponseEntity.noContent().build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/AuthController.java

@@ -0,0 +1,62 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.*;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.service.AuthService;
+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;
+
+/**
+ * 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;
+
+    public AuthController(AuthService authService) {
+        this.authService = authService;
+    }
+
+    @Operation(description = "用户登录")
+    @PostMapping("/login")
+    public ResponseEntity<UserResponse> login(@Validated @RequestBody LoginRequest request) {
+        var user = authService.login(request);
+        return authService.getUserResponseResponseEntity(user);
+    }
+
+    @RequiresAuth
+    @Operation(description = "退出登录")
+    @PostMapping("/logout")
+    public ResponseEntity<Void> logout() {
+        var expiredCookie = authService.logout();
+        return ResponseEntity.noContent()
+                .header(HttpHeaders.SET_COOKIE, expiredCookie.toString())
+                .build();
+    }
+
+    @Operation(description = "发送邮件验证码")
+    @PostMapping("/verification-code")
+    public SendVerificationCodeResponse sendVerificationCode(@Validated @RequestBody SendVerificationCodeRequest request) {
+        var verificationCodeId = authService.sendVerificationCode(request);
+        return new SendVerificationCodeResponse(verificationCodeId);
+    }
+
+    @Operation(description = "用户注册")
+    @PostMapping("/register")
+    public ResponseEntity<UserResponse> register(@Validated @RequestBody RegisterRequest request) {
+        var user = authService.register(request);
+        return authService.getUserResponseResponseEntity(user);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/DailyPasswordController.java

@@ -0,0 +1,32 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.DailyPasswordResponse;
+import com.onixbyte.ahsarahguide.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();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/FirearmController.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.FirearmRequest;
+import com.onixbyte.ahsarahguide.domain.dto.FirearmResponse;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/GlobalExceptionHandler.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ErrorResponse;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.server.ResponseStatusException;
+
+/**
+ * Global exception handler that translates exceptions into standard error responses.
+ *
+ * @author zihluwang
+ */
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+    @ExceptionHandler(ResponseStatusException.class)
+    public ResponseEntity<ErrorResponse> handleResponseStatusException(ResponseStatusException exception) {
+        var status = exception.getStatusCode();
+        return ResponseEntity.status(status)
+                .body(new ErrorResponse(exception.getReason()));
+    }
+
+    @ExceptionHandler(AuthenticationException.class)
+    public ResponseEntity<ErrorResponse> handleAuthenticationException(AuthenticationException exception) {
+        return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
+                .body(new ErrorResponse("请先登录"));
+    }
+
+    @ExceptionHandler(AccessDeniedException.class)
+    public ResponseEntity<ErrorResponse> handleAccessDeniedException(AccessDeniedException exception) {
+        var authentication = SecurityContextHolder.getContext().getAuthentication();
+        var httpStatus = authentication == null || !authentication.isAuthenticated()
+                ? HttpStatus.UNAUTHORIZED
+                : HttpStatus.FORBIDDEN;
+        var message = httpStatus == HttpStatus.UNAUTHORIZED ? "请先登录" : "权限不足";
+        return ResponseEntity.status(httpStatus)
+                .body(new ErrorResponse(message));
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/controller/ModificationController.java

@@ -0,0 +1,109 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ModificationBatchCreateRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationResponse;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUser;
+import com.onixbyte.ahsarahguide.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(
+            @CurrentUser User user,
+            @Valid @RequestBody ModificationRequest request
+    ) {
+        return modificationService.create(request, user);
+    }
+
+    @RequiresAuth
+    @Operation(description = "批量创建改装")
+    @PostMapping("/batch")
+    public List<ModificationResponse> batchCreate(
+            @CurrentUser User user,
+            @Valid @RequestBody ModificationBatchCreateRequest request
+    ) {
+        return modificationService.batchCreate(request.modifications(), user);
+    }
+
+    @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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/TagController.java

@@ -0,0 +1,34 @@
+package com.onixbyte.ahsarahguide.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.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/UserController.java

@@ -0,0 +1,79 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.BuildSummaryResponse;
+import com.onixbyte.ahsarahguide.domain.dto.ChangePasswordRequest;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.domain.dto.UpdateProfileRequest;
+import com.onixbyte.ahsarahguide.domain.dto.UserProfileResponse;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUser;
+import com.onixbyte.ahsarahguide.service.UserService;
+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 org.springframework.data.domain.PageRequest;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.GetMapping;
+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;
+
+/**
+ * REST controller for the current user's profile management endpoints.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "用户个人中心", description = "当前用户的资料管理与密码修改")
+@RestController
+@RequestMapping("/user")
+@Validated
+@RequiresAuth
+public class UserController {
+
+    private final UserService userService;
+
+    public UserController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Operation(description = "获取当前登录用户的个人资料")
+    @GetMapping("/me")
+    public UserProfileResponse profile(@CurrentUser User user) {
+        return userService.getProfile(user);
+    }
+
+    @Operation(description = "修改当前用户的个人资料（昵称与邮箱）")
+    @PutMapping("/me")
+    public UserProfileResponse updateProfile(
+            @CurrentUser User user,
+            @Valid @RequestBody UpdateProfileRequest request
+    ) {
+        return userService.updateProfile(user, request);
+    }
+
+    @Operation(description = "修改当前用户的登录密码")
+    @PutMapping("/me/password")
+    public ResponseEntity<Void> changePassword(
+            @CurrentUser User user,
+            @Valid @RequestBody ChangePasswordRequest request
+    ) {
+        userService.changePassword(user, request);
+        return ResponseEntity.noContent().build();
+    }
+
+    @Operation(description = "分页查询当前用户的改枪码列表")
+    @GetMapping("/me/builds")
+    public PageResponse<BuildSummaryResponse> builds(
+            @CurrentUser User user,
+            @RequestParam(defaultValue = "0") @Min(0) int page,
+            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size
+    ) {
+        return userService.getBuilds(user, PageRequest.of(page, size));
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/VersionController.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.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();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/WebhookController.java

@@ -0,0 +1,47 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.GitHubIssueRequest;
+import com.onixbyte.ahsarahguide.service.WebhookService;
+import com.onixbyte.ahsarahguide.shared.GitHubWebhookHeader;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+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;
+
+@Tag(name = "WebHook")
+@RestController
+@RequestMapping("/webhooks")
+public class WebhookController {
+
+    private static final Logger log = LoggerFactory.getLogger(WebhookController.class);
+
+    private final WebhookService webhookService;
+
+    public WebhookController(WebhookService webhookService) {
+        this.webhookService = webhookService;
+    }
+
+    @Operation(description = "GitHub WebHook 接口")
+    @PostMapping("/github")
+    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();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/converter/FirearmTypeConverter.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.domain.converter;
+
+import com.onixbyte.ahsarahguide.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);
+    }
+}
+
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/converter/ModificationStatusConverter.java

@@ -0,0 +1,28 @@
+package com.onixbyte.ahsarahguide.domain.converter;
+
+import com.onixbyte.ahsarahguide.enumeration.ModificationStatus;
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Converter;
+
+import java.util.Optional;
+
+/**
+ * JPA attribute converter that maps {@link ModificationStatus} enum to/from its integer database representation.
+ *
+ * @author zihluwang
+ */
+@Converter
+public class ModificationStatusConverter implements AttributeConverter<ModificationStatus, Integer> {
+
+    @Override
+    public Integer convertToDatabaseColumn(ModificationStatus attribute) {
+        return Optional.ofNullable(attribute)
+                .map(ModificationStatus::getCode)
+                .orElse(null);
+    }
+
+    @Override
+    public ModificationStatus convertToEntityAttribute(Integer dbData) {
+        return ModificationStatus.fromCode(dbData);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/AccessoryRequest.java

@@ -0,0 +1,25 @@
+package com.onixbyte.ahsarahguide.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;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/AccessoryResponse.java

@@ -0,0 +1,27 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.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()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/BuildSummaryResponse.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import java.util.List;
+
+/**
+ * Response record summarising a user's custom modification build.
+ * This is a skeleton record whose {@code from()} factory will be fully implemented
+ * when the CustomModification entity is introduced in a future issue.
+ *
+ * @author zihluwang
+ */
+public record BuildSummaryResponse(
+        Long id,
+        String name,
+        String code,
+        String firearmName,
+        List<String> tags
+) {
+    // from() factory to be implemented when CustomModification entity lands
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ChangePasswordRequest.java

@@ -0,0 +1,23 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import jakarta.validation.constraints.Size;
+
+/**
+ * Request record for changing the current user's password.
+ *
+ * @author zihluwang
+ */
+public record ChangePasswordRequest(
+        @NotBlank(message = "旧密码不能为空")
+        String oldPassword,
+
+        @NotBlank(message = "新密码不能为空")
+        @Size(min = 8, max = 128, message = "密码长度必须在8-128个字符之间")
+        @Pattern(
+                regexp = "^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d).+$",
+                message = "密码必须包含至少一个大写字母、一个小写字母和一个数字"
+        )
+        String newPassword
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPassword.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * DTO representing a single daily-generated password for a map.
+ *
+ * @author zihluwang
+ */
+public record DailyPassword(
+        String mapName,
+        String password
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordData.java

@@ -0,0 +1,19 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordMetadata.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * DTO holding metadata about the daily password source and update tracking.
+ *
+ * @author zihluwang
+ */
+public record DailyPasswordMetadata(
+        String version,
+        String author
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordResponse.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * Response DTO wrapping daily password data with metadata.
+ *
+ * @author zihluwang
+ */
+public record DailyPasswordResponse(
+        String status,
+        String message,
+        DailyPasswordData data,
+        DailyPasswordMetadata metadata
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/EmailVerificationCode.java

@@ -0,0 +1,8 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+public record EmailVerificationCode(
+        String username,
+        String email,
+        String code
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ErrorResponse.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * Standard error response body returned on API failures.
+ *
+ * @author zihluwang
+ */
+public record ErrorResponse(
+        String message
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/FirearmRequest.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/FirearmResponse.java

@@ -0,0 +1,36 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.Firearm;
+import com.onixbyte.ahsarahguide.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()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubIssueRequest.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookIssue.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.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
+) {
+
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookLabel.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookRepository.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookSender.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/LoginRequest.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ManageRoleRequest.java

@@ -0,0 +1,13 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+/**
+ * Request record for managing a user's role assignment.
+ *
+ * @author zihluwang
+ */
+public record ManageRoleRequest(
+        @NotBlank(message = "角色不能为空")
+        String role
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationBatchCreateRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationBatchDeleteRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationRequest.java

@@ -0,0 +1,38 @@
+package com.onixbyte.ahsarahguide.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;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationResponse.java

@@ -0,0 +1,39 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.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()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/PageResponse.java

@@ -0,0 +1,29 @@
+package com.onixbyte.ahsarahguide.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()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/RegisterRequest.java

@@ -0,0 +1,31 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+
+/**
+ * Registration request containing the new user account information.
+ *
+ * @author zihluwang
+ */
+@Schema(description = "注册请求")
+public record RegisterRequest(
+        @NotBlank(message = "用户名不能为空")
+        @Schema(description = "用户名", requiredMode = Schema.RequiredMode.REQUIRED)
+        String username,
+        @NotBlank(message = "邮箱不能为空")
+        @Email(message = "邮箱格式不正确")
+        @Schema(description = "邮箱", requiredMode = Schema.RequiredMode.REQUIRED)
+        String email,
+        @Schema(description = "昵称")
+        String nickname,
+        @Schema(description = "头像链接")
+        String avatarUrl,
+        @NotBlank(message = "密码不能为空")
+        @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED)
+        String password,
+        @NotBlank(message = "验证码 ID 不能为空") String verificationCodeId,
+        @NotBlank(message = "验证码不能为空") String verificationCode
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/SendVerificationCodeRequest.java

@@ -0,0 +1,9 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record SendVerificationCodeRequest(
+        @NotBlank(message = "用户名不能为空") String username,
+        @NotBlank(message = "电子邮箱地址不能为空") String email
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/SendVerificationCodeResponse.java

@@ -0,0 +1,6 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+public record SendVerificationCodeResponse(
+        String verificationCodeId
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/TuningRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.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
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/TuningResponse.java

@@ -0,0 +1,21 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.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()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UpdateProfileRequest.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.Size;
+
+/**
+ * Request record for updating the current user's profile information.
+ *
+ * @author zihluwang
+ */
+public record UpdateProfileRequest(
+        @Size(min = 1, max = 64, message = "昵称长度必须在1-64个字符之间")
+        String nickname
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UserProfileResponse.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * Response record for the current user's full profile information.
+ *
+ * @author zihluwang
+ */
+public record UserProfileResponse(
+        Long id,
+        String username,
+        String nickname,
+        String email,
+        String avatarUrl,
+        Boolean enabled,
+        LocalDateTime createdAt,
+        List<String> roles
+) {
+
+    /**
+     * Creates a {@code UserProfileResponse} from a {@link User} entity and its assigned roles.
+     *
+     * @param user  the user entity
+     * @param roles the list of role names assigned to the user
+     * @return the constructed response
+     */
+    public static UserProfileResponse from(User user, List<String> roles) {
+        return new UserProfileResponse(
+                user.getId(),
+                user.getUsername(),
+                user.getNickname() == null || user.getNickname().isBlank()
+                        ? user.getUsername() : user.getNickname(),
+                user.getEmail(),
+                user.getAvatarUrl(),
+                user.getEnabled(),
+                user.getCreatedAt(),
+                roles
+        );
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UserResponse.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.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
+        );
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Accessory.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Firearm.java

@@ -0,0 +1,232 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import com.onixbyte.ahsarahguide.domain.converter.FirearmTypeConverter;
+import com.onixbyte.ahsarahguide.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;
+        }
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Modification.java

@@ -0,0 +1,289 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import com.onixbyte.ahsarahguide.domain.converter.ModificationStatusConverter;
+import com.onixbyte.ahsarahguide.enumeration.ModificationStatus;
+import io.hypersistence.utils.hibernate.type.json.JsonType;
+import jakarta.persistence.*;
+import org.hibernate.annotations.Type;
+
+import java.time.OffsetDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * 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
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @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", nullable = false)
+    private List<String> tags = new ArrayList<>();
+
+    @Type(JsonType.class)
+    @Column(name = "accessories", columnDefinition = "jsonb", nullable = false)
+    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;
+
+    @Column(name = "status", nullable = false)
+    @Convert(converter = ModificationStatusConverter.class)
+    private ModificationStatus status = ModificationStatus.DRAFT;
+
+    @Column(name = "create_by")
+    private Long createBy;
+
+    @Column(name = "create_time", nullable = false)
+    private OffsetDateTime createTime;
+
+    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 User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+
+    public Long getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(Long createBy) {
+        this.createBy = createBy;
+    }
+
+    public OffsetDateTime getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(OffsetDateTime createTime) {
+        this.createTime = createTime;
+    }
+
+    public ModificationStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(ModificationStatus status) {
+        this.status = status;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Long id;
+        private User user;
+        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;
+        private Long createBy;
+        private OffsetDateTime createTime;
+        private ModificationStatus status;
+
+        public Builder id(Long id) {
+            this.id = id;
+            return this;
+        }
+
+        public Builder user(User user) {
+            this.user = user;
+            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 Builder createBy(Long createBy) {
+            this.createBy = createBy;
+            return this;
+        }
+
+        public Builder createTime(OffsetDateTime createTime) {
+            this.createTime = createTime;
+            return this;
+        }
+
+        public Builder status(ModificationStatus status) {
+            this.status = status;
+            return this;
+        }
+
+        public Modification build() {
+            Modification modification = new Modification();
+            modification.id = this.id;
+            modification.user = this.user;
+            modification.firearm = this.firearm;
+            modification.name = this.name;
+            modification.code = this.code;
+            modification.tags = Optional.ofNullable(this.tags).orElseGet(ArrayList::new);
+            modification.accessories = Optional.ofNullable(this.accessories).orElseGet(ArrayList::new);
+            modification.note = this.note;
+            modification.author = this.author;
+            modification.videoUrl = this.videoUrl;
+            modification.createBy = this.createBy;
+            modification.createTime = Optional.ofNullable(this.createTime).orElseGet(OffsetDateTime::now);
+            modification.status = Optional.ofNullable(this.status).orElse(ModificationStatus.DRAFT);
+            return modification;
+        }
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Tuning.java

@@ -0,0 +1,50 @@
+package com.onixbyte.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/User.java

@@ -0,0 +1,217 @@
+package com.onixbyte.ahsarahguide.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.PreUpdate;
+import jakarta.persistence.Table;
+
+import java.time.LocalDateTime;
+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;
+
+    @Column(name = "nickname")
+    private String nickname;
+
+    @Column(name = "avatar_url")
+    private String avatarUrl;
+
+    @Column(name = "enabled", nullable = false)
+    private Boolean enabled = true;
+
+    @Column(name = "created_at", nullable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private LocalDateTime updatedAt;
+
+    @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 String getNickname() {
+        return nickname;
+    }
+
+    public void setNickname(String nickname) {
+        this.nickname = nickname;
+    }
+
+    public String getAvatarUrl() {
+        return avatarUrl;
+    }
+
+    public void setAvatarUrl(String avatarUrl) {
+        this.avatarUrl = avatarUrl;
+    }
+
+    public Boolean getEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(Boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    @PreUpdate
+    private void onUpdate() {
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    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 String nickname;
+        private String avatarUrl;
+        private Boolean enabled;
+        private LocalDateTime createdAt;
+        private LocalDateTime updatedAt;
+        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 nickname(String nickname) {
+            this.nickname = nickname;
+            return this;
+        }
+
+        public Builder avatarUrl(String avatarUrl) {
+            this.avatarUrl = avatarUrl;
+            return this;
+        }
+
+        public Builder enabled(Boolean enabled) {
+            this.enabled = enabled;
+            return this;
+        }
+
+        public Builder createdAt(LocalDateTime createdAt) {
+            this.createdAt = createdAt;
+            return this;
+        }
+
+        public Builder updatedAt(LocalDateTime updatedAt) {
+            this.updatedAt = updatedAt;
+            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.nickname = this.nickname == null || this.nickname.isBlank()
+                    ? this.username : this.nickname;
+            user.avatarUrl = this.avatarUrl;
+            user.enabled = this.enabled == null || this.enabled;
+            user.createdAt = this.createdAt;
+            user.updatedAt = this.updatedAt;
+            user.credentials = this.credentials == null ? new ArrayList<>() : this.credentials;
+            return user;
+        }
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserCredential.java

@@ -0,0 +1,143 @@
+package com.onixbyte.ahsarahguide.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;
+		}
+	}
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserCredentialId.java

@@ -0,0 +1,81 @@
+package com.onixbyte.ahsarahguide.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;
+        }
+    }
+}
+
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserRole.java

@@ -0,0 +1,101 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.MapsId;
+import jakarta.persistence.Table;
+
+/**
+ * Entity representing a role assignment linking a user to a security role.
+ * <p>
+ * A user owns at most one role assignment, so the user ID is the primary key.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(name = "user_role")
+public class UserRole {
+
+    @Id
+    @Column(name = "user_id")
+    private Long userId;
+
+    @MapsId("userId")
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_user_role_user"))
+    private User user;
+
+    @Column(name = "role", nullable = false, length = 32)
+    private String role;
+
+    public Long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Long userId) {
+        this.userId = userId;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+        if (user != null) {
+            this.userId = user.getId();
+        }
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private User user;
+        private Long userId;
+        private String role;
+
+        public Builder user(User user) {
+            this.user = user;
+            return this;
+        }
+
+        public Builder userId(Long userId) {
+            this.userId = userId;
+            return this;
+        }
+
+        public Builder role(String role) {
+            this.role = role;
+            return this;
+        }
+
+        public UserRole build() {
+            UserRole userRole = new UserRole();
+            userRole.user = this.user;
+            userRole.role = this.role;
+            if (this.user != null) {
+                userRole.userId = this.user.getId();
+            }
+            if (this.userId != null) {
+                userRole.userId = this.userId;
+            }
+            return userRole;
+        }
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/enumeration/FirearmType.java

@@ -0,0 +1,50 @@
+package com.onixbyte.ahsarahguide.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);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/enumeration/ModificationStatus.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.enumeration;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+/**
+ * Enumeration of modification statuses.
+ * <p>
+ * Each status is associated with an integer code used for database persistence.
+ *
+ * @author zihluwang
+ */
+public enum ModificationStatus {
+
+    DRAFT(0),
+    PENDING_APPROVAL(1),
+    PUBLISHED(2);
+
+    private final int code;
+
+    ModificationStatus(int code) {
+        this.code = code;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    public static final Map<Integer, ModificationStatus> CODE_MAP = Arrays.stream(values())
+            .collect(Collectors.toMap(ModificationStatus::getCode, Function.identity()));
+
+    /**
+     * Resolve a ModificationStatus from its integer code.
+     *
+     * @param code the integer code, may be null
+     * @return the corresponding ModificationStatus, or null if the code is null
+     * @throws IllegalArgumentException if the code does not match any known status
+     */
+    public static ModificationStatus fromCode(Integer code) {
+        return CODE_MAP.get(code);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/BadRequestException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class BadRequestException extends ResponseStatusException {
+
+    public BadRequestException(String reason) {
+        super(HttpStatus.BAD_REQUEST, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/ConflictException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class ConflictException extends ResponseStatusException {
+
+    public ConflictException(String reason) {
+        super(HttpStatus.CONFLICT, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/ForbiddenException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class ForbiddenException extends ResponseStatusException {
+
+    public ForbiddenException(String reason) {
+        super(HttpStatus.FORBIDDEN, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/InternalServerErrorException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class InternalServerErrorException extends ResponseStatusException {
+
+    public InternalServerErrorException(String reason) {
+        super(HttpStatus.INTERNAL_SERVER_ERROR, reason);
+    }
+}