Mcp Workspace Endpoint

JSON-RPC entry point for an MCP client targeting a whole workspace.

One endpoint, one existing user-scoped API key, N indexed repos. Tools are the same ones the per-repo endpoint serves; they are run against every ready member snapshot and merged by the dispatcher workspace chat already uses, so the two surfaces cannot drift in what "across the workspace" means.

No per-repo tool override is read here. mcp_tool_overrides is keyed (user_id, repo_id) and a workspace has several repos, so honouring five possibly-contradictory selections would be a guess; the workspace surface is the curated default plus list_repos. Upgrade path if anyone asks: a workspace-keyed override row, not a merge of repo rows.