feat(nav): restructure top navigation and sidebars

The old nav used bare lowercase slugs and leaned on filesystem order for
every sidebar.

- Replace the three existing nav entries with six labelled ones, keyed
  through i18n.json so both locales resolve to their own text from
  identical _nav.json files.
- Add _meta.json for blogs and opensource-projects, grouping entries by
  topic instead of leaving them alphabetical.
- Rename the Blogs and Notifications pages so their titles match the nav
  labels (Insights and News).
- Point the notification page's account-settings link at GitHub, as the
  Gitea instance it referenced is retired.

docs/zh-hans/_nav.json

@@ -1,17 +1,32 @@
 [
   {
-    "text": "projects",
-    "link": "/projects/",
-    "activeMatch": "/projects/"
+    "text": "nav.home",
+    "link": "/",
+    "activeMatch": "^/$|^/zh-hans/$"
   },
   {
-    "text": "blogs",
+    "text": "nav.products",
+    "link": "/products/",
+    "activeMatch": "/products/"
+  },
+  {
+    "text": "nav.services",
+    "link": "/services/",
+    "activeMatch": "/services/"
+  },
+  {
+    "text": "nav.insights",
     "link": "/blogs/",
     "activeMatch": "/blogs/"
   },
   {
-    "text": "notifications",
+    "text": "nav.news",
     "link": "/notifications/",
     "activeMatch": "/notifications/"
+  },
+  {
+    "text": "nav.opensource",
+    "link": "/opensource-projects/",
+    "activeMatch": "/opensource-projects/"
   }
 ]

docs/zh-hans/blogs/_meta.json

@@ -0,0 +1,33 @@
+[
+  "index",
+  { "type": "section-header", "label": "insights.group.frontend" },
+  { "type": "file", "name": "ecmascript-2025-syntax-sugar" },
+  { "type": "file", "name": "frontend-development-standards" },
+  { "type": "file", "name": "frontend-tips-and-solutions" },
+  { "type": "file", "name": "font-size-conversion-table" },
+  { "type": "section-header", "label": "insights.group.backend" },
+  { "type": "file", "name": "java-development-standards" },
+  { "type": "file", "name": "java-development-cheatsheet" },
+  { "type": "file", "name": "mybatis-flex" },
+  { "type": "file", "name": "postgresql-zhparser-fuzzy-search" },
+  { "type": "file", "name": "use-json-in-mysql" },
+  { "type": "section-header", "label": "insights.group.devops" },
+  { "type": "file", "name": "docker-deployment-standards" },
+  { "type": "file", "name": "gitlab-ops" },
+  { "type": "file", "name": "setup-ldap-service" },
+  { "type": "file", "name": "minio-admin-guide" },
+  { "type": "section-header", "label": "insights.group.practice" },
+  { "type": "file", "name": "general-development-standards" },
+  { "type": "file", "name": "google-code-review-standards" },
+  { "type": "file", "name": "version-control-and-code-review" },
+  { "type": "file", "name": "git-cheatsheet" },
+  { "type": "section-header", "label": "insights.group.tooling" },
+  { "type": "file", "name": "fix-idea-application-yaml-schema-validation" },
+  { "type": "file", "name": "windows-driver-backup-restore" },
+  { "type": "file", "name": "fix-macos-monterey-sleep-wake" },
+  { "type": "file", "name": "macos-private-dns-hostname" },
+  { "type": "file", "name": "quartile-method" },
+  { "type": "file", "name": "use-of-gravatar" },
+  { "type": "file", "name": "email-like-a-boss" },
+  { "type": "file", "name": "cooking-seasoning-guide" }
+]

docs/zh-hans/blogs/index.md

@@ -1,10 +1,10 @@
 ---
-title: 博客
+title: 技术洞察
 ---
 
-# 博客
+# 技术洞察
 
-欢迎来到 OnixByte 博客，这里汇集了日常工程实践中沉淀的实用指南、速查手册和开发规范。
+这里汇集了日常工程实践中沉淀的实用指南、速查手册和开发规范。
 
 ## 话题分类
 

docs/zh-hans/notifications/index.md

@@ -1,10 +1,10 @@
 ---
-title: 通知
+title: 企业动态
 ---
 
 ## Microsoft 邮件投递问题（@outlook、@hotmail、@live、@msn 以及托管在 Microsoft 的自定义域名邮箱）
 
-> 更新于 *2026 年 5 月 19 日*
+> 更新于 _2026 年 5 月 19 日_
 
 **使用 Microsoft 托管邮箱的用户需立即采取行动。**
 
@@ -13,7 +13,6 @@ title: 通知
 为确保服务不受影响，请根据您的账户状态参考以下指引：
 
 - **新用户（注册前）**：请**不要**使用 Microsoft 托管的邮箱地址注册账户。您将无法收到必要的激活链接。请使用其他邮件服务商，例如您的企业邮箱、QQ 邮箱或网易 163 邮箱完成注册。
-- **已注册用户**：如果您的账户当前绑定了 Outlook 或 Hotmail 邮箱地址，请立即登录并更新您的主邮箱。您可以通过 **[用户设置 -> 偏好设置 -> 邮箱](https://git.onixbyte.cn/-/profile/emails)** 页面进行更改。未能及时更新将导致您无法收到重要的仓库更新、CI/CD 流水线失败日志以及合并请求通知。
+- **已注册用户**：如果您的账户当前绑定了 Outlook 或 Hotmail 邮箱地址，请立即登录并更新您的主邮箱。您可以通过 **[用户设置 -> 偏好设置 -> 邮箱](https://github.com/settings/emails)** 页面进行更改。未能及时更新将导致您无法收到重要的仓库更新、CI/CD 流水线失败日志以及合并请求通知。
 
 我们正在积极与 Microsoft Postmaster Centre 沟通，以申请解除此屏蔽。对于由此带来的任何不便，我们深表歉意，并感谢您及时配合更新联系信息。
-

docs/zh-hans/opensource-projects/_meta.json

@@ -0,0 +1,14 @@
+[
+  "index",
+  { "type": "section-header", "label": "opensource.group.libraries" },
+  { "type": "dir", "name": "onixbyte-toolbox" },
+  { "type": "dir", "name": "regions4j" },
+  { "type": "dir", "name": "captcha" },
+  { "type": "dir", "name": "calendar-toolbox" },
+  { "type": "section-header", "label": "opensource.group.applications" },
+  { "type": "dir", "name": "helix" },
+  { "type": "dir", "name": "delta-force-guide" },
+  { "type": "section-header", "label": "opensource.group.tools" },
+  { "type": "dir", "name": "claude-code-skill-manager" },
+  { "type": "dir", "name": "vite-plugins" }
+]