feat(docs): 文档站重制 — 参照 opsxapi/opsxshell 体系,服务端渲染三栏布局

- 后端 goldmark 渲染管线:/docs/:slug 页面 + /docs/search-data.json 搜索索引,
  manifest.json 驱动分组导航,正文剥 H1 避免与页面头重复
- 三栏布局(分组侧栏/内容/本页目录)+ 顶栏(品牌/版本徽章/搜索面板/官网入口),
  docs.css 品牌绿版 + docs.js(代码复制/轻量高亮/提示块/TOC 滚动高亮/移动端抽屉)
- 替换 docsify;无上一页时空占位无边框;visual-judge 两轮评审(初版 fail → 修复后 pass)

docs/user-guide/_sidebar.md

@@ -1,9 +0,0 @@
-- [开始](README.md)
-- [安装与启动](install.md)
-- [部署向导](wizard.md)
-- [日志采集](collectors.md)
-- [日志查询](query.md)
-- [日志分析](analysis.md)
-- [告警通知](alerts.md)
-- [查询授权](access.md)
-- [常见问题](faq.md)

docs/user-guide/manifest.json

@@ -0,0 +1,74 @@
+{
+  "productVersion": "2.0",
+  "groups": [
+    {
+      "name": "开始使用",
+      "pages": [
+        {
+          "file": "README.md",
+          "slug": "readme",
+          "title": "产品介绍",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "install.md",
+          "slug": "install",
+          "title": "安装与启动",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "wizard.md",
+          "slug": "wizard",
+          "title": "部署向导",
+          "updated": "2026-10-28"
+        }
+      ]
+    },
+    {
+      "name": "采集与查询",
+      "pages": [
+        {
+          "file": "collectors.md",
+          "slug": "collectors",
+          "title": "日志采集",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "query.md",
+          "slug": "query",
+          "title": "日志查询",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "analysis.md",
+          "slug": "analysis",
+          "title": "日志分析",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "access.md",
+          "slug": "access",
+          "title": "查询授权",
+          "updated": "2026-10-28"
+        }
+      ]
+    },
+    {
+      "name": "告警与运维",
+      "pages": [
+        {
+          "file": "alerts.md",
+          "slug": "alerts",
+          "title": "告警通知",
+          "updated": "2026-10-28"
+        },
+        {
+          "file": "faq.md",
+          "slug": "faq",
+          "title": "常见问题",
+          "updated": "2026-10-28"
+        }
+      ]
+    }
+  ]
+}