feat(mcp): /settings surface — list mounted MCP servers + health

[saucam]

What

The deferred /settings surface for the MCP mounter: a read-only 🔌 MCP Servers view in the settings drawer that lists every registry server (config mcpServers + imported from ~/.claude.json) with its transport, trust, scope, backends, and live health.

How

• protocol — McpServerStatus + an optional mcpServers on SettingsSnapshot.
• McpHub — tracks the last-observed status (tool names / error) per server from normal use, exposed via statusFor() / hasClient(). No live probe on read — opening settings has zero side effects; a server shows idle until it's exercised, then connected or error (with the message).
• session-manager — #mcpServerStatuses() maps registry specs + hub status into the snapshot for both settings.get and settings.set results.
• web — a synthetic read-only "🔌 MCP Servers" tab in the SettingsDrawer (shown only when the daemon reports mcpServers): a health chip, tool chips, and per-server transport/trust/backends. Built-in codeoid_memory is labeled.

Tests

• daemon: hub status tracking (tools + connected; timeout → error); settings.get surfaces built-in memory + a configured stdio server with idle health. tsc + biome clean.
• web: tsc -b + vitest (251) + production build clean; lint 0 errors.

Notes

Health is observation-based (from actual tool use), not a forced connect — deliberate, so viewing settings never spawns MCP subprocesses. A "refresh/probe" button and registry hot-reload remain optional follow-ups.

🤖 Generated with Claude Code

[github-actions]

🤖 Gemini code review

Introduces a read-only MCP Servers settings panel displaying registered servers, their configuration, and live health statistics aggregated from actual tool usage. This allows users to inspect server statuses without triggering proactive subprocess spawns.

Findings: 🔴 0 · 🟠 1 · 🟡 0 · 🟢 0

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_{Tokens spent · ⬆️ Input: 5,674 · ⬇️ Output: 240 · Σ Total: 9,965
Total may be higher due to thinking token counts.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.52%. Comparing base (56559bb) to head (090fba1).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #203      +/-   ##
==========================================
+ Coverage   87.49%   87.52%   +0.03%     
==========================================
  Files         118      118              
  Lines       21082    21122      +40     
==========================================
+ Hits        18446    18488      +42     
+ Misses       2636     2634       -2     

Flag	Coverage Δ
daemon	87.52% <100.00%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/daemon/mcp/hub.ts	99.20% <100.00%> (+0.02%)	⬆️
src/daemon/session-manager.ts	74.69% <100.00%> (+0.52%)	⬆️

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