feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

.claude/skills/repo-onboarding/references/module-map.md

@@ -0,0 +1,20 @@
+# Module Map
+
+## Backend
+- `server/index.js`: app composition, startup behavior, periodic maintenance.
+- `server/db.js`: schema and prepared statement ownership.
+- `server/routes/*.js`: endpoint contracts by domain.
+- `server/websocket.js`: WS lifecycle and broadcast behavior.
+
+## Frontend
+- `client/src/pages/`: route-level screens.
+- `client/src/components/`: reusable UI building blocks.
+- `client/src/lib/api.ts`: client API access patterns.
+- `client/src/hooks/useWebSocket.ts`: live update pipeline.
+
+## MCP
+- `mcp/src/index.ts`: runtime entrypoint.
+- `mcp/src/server.ts`: MCP assembly.
+- `mcp/src/tools/domains/`: domain tool registration.
+- `mcp/src/clients/dashboard-api-client.ts`: resilient API bridge.
+- `mcp/src/policy/tool-guards.ts`: mutation/destructive gates.