* feat(api-docs): enhance API documentation with missing endpoints, search, collapse, and route sync test
- Add 29 undocumented routes across 4 new sections (Settings, Xray Settings,
Subscription Server, WebSocket) plus 4 missing Server API endpoints
- Fix inaccuracies: history metric keys, node metric keys, VLESS enc description
- Add response schemas to 15+ key endpoints
- Add search bar and expand/collapse all controls to the docs page
- Add collapsible endpoint sections with endpoint count
- Add Go test (TestAPIRoutesDocumented) to verify all Go routes are documented
* feat(api-docs): add JSON syntax highlighting and top-right copy button to code blocks
* fix(api-docs): use distinct colors for JSON syntax highlighting (green strings, amber numbers)
* feat(api-docs): add request body examples, error responses, WebSocket message types, and subscription response headers
* fix(api-docs): use ClipboardManager.copyText instead of copy to fix API token copy button
New /panel/api-docs route with a one-page reference covering every
/panel/api/* endpoint (Auth, Inbounds, Server, Nodes, Custom Geo,
Backup) plus a Bearer-token primer that reads the current token and
exposes Show/Copy/Regenerate inline. Sidebar gets an API Docs entry
right after Xray; the menu label is shared via menu.apiDocs across all
13 locales.
