feat(skill-addresses): 将「技能地址管理」并入管理员「技能管理」页的标签页

- SkillAddressesPage 主体抽成可复用的 SkillAddressesPanel（默认导出保留旧路由作直链回退）
- AdminSkillsPage 顶部加 Tabs：技能列表 + 技能地址管理（嵌入 panel）
- 移除 page-sidebar 左下角设置下拉里两处独立的「技能地址管理」入口
- 同步更新前后端 CLAUDE.md 文档

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

offline-backend-20260512/backend/CLAUDE.md

@@ -556,9 +556,14 @@ snippet) and replaced together.
   `{skills_root}/.address-edits/{timestamp}/` (the `.`-prefixed dir is excluded
   from scans), then `refresh_skills_system_prompt_cache_async()` so edits take
   effect immediately. Registered in `app.py` after `sensitive_words.router`.
-- **Frontend** — admin page `pages/SkillAddressesPage.tsx` (route
-  `/page/strategy/admin/skill-addresses`, entry「技能地址管理」in the bottom-left
-  settings dropdown of `components/page-sidebar.tsx`, both full + collapsed modes):
+- **Frontend** — the panel is the reusable `SkillAddressesPanel` (exported from
+  `pages/SkillAddressesPage.tsx`; its default export keeps the standalone route
+  `/page/strategy/admin/skill-addresses` as a direct-link fallback). It is
+  **embedded as a「技能地址管理」tab inside the admin「技能管理」page**
+  `pages/AdminSkillsPage.tsx` (Tabs: 技能列表 + 技能地址管理; reached from the
+  「技能管理」item in the「设置和更多」dropdown `workspace-nav-menu.tsx` →
+  `/page/workspace/admin/skills`) — it is no longer a separate entry in the
+  `components/page-sidebar.tsx` settings dropdown. The panel:
   auto-scan on open with a **progress bar** (扫描逐技能 / 应用逐文件 X/N), URL/IP
   type filter, search, a「片段批量套用」helper (e.g. all `uat.4.cn` → `prod.4.cn`),
   per-address「替换为」input with expandable occurrences, inline 预览 panel, 应用,