Merge the old Skills + Toolsets tabs and pull MCP out of Settings into one
master-detail "Capabilities" hub (Skills / Tools / MCP / Browse Hub).
- Skills: usage-sorted from real per-skill activity, provenance badges
(learned / built-in / hub), edit + archive for learned skills, per-tab bulk
toggle; full-bleed empty states.
- Tools: usage-aware, container-queried rows (no early two-column collapse).
- Settings panels move onto the shared config-record query cache; the deleted
Settings MCP page redirects (/settings?tab=mcp → /skills?tab=mcp).
- Lazy, profile-scoped, TTL-cached usage analytics so the heavy 365-day scan
never blocks the Skills/MCP tabs. Full en/zh strings (ja/zh-hant inherit).
7e6d60aadc