[Cursor MCP] sessions omit capabilities.roots

## Observed symptom bug: Cursor MCP sessions omit capabilities.roots ## Source Diagnosed during live testing of the Cursor MCP connection used with this server. Present as a client limitation on `main` at `a3470f7`; this repository only consumes roots. Related server handling: #249. - Cursor MCP client: the tested connection did not advertise `capabilities.roots` - Server consumer: `src/mcp/project-root.ts` (`rootListerFromClient`), `src/mcp/server.ts` The MCP SDK rejects `roots/list` before the request reaches the client when `capabilities.roots` is absent. ## Defect The tested Cursor MCP connection did not advertise `capabilities.roots`, preventing the server from discovering the active workspace through `roots/list`. ## Expected Cursor's MCP connec ## Literal error text ``` sessions omit capabilities.roots ``` ## Environment GitHub issue srmlcn/qa-agent #250 ## Trigger / context ## Source Diagnosed during live testing of the Cursor MCP connection used with this server. Present as a client limitation on `main` at `a3470f7`; this repository only consumes roots. Related server handling: #249. - Cursor MCP client: the tested connection did not advertise `capabilities.roots` - Server consumer: `src/mcp/project-root.ts` (`rootListerFromClient`), `src/mcp/server.ts` The MCP SDK rejects `roots/list` before the request reaches the client when `capabilities.roots` is absent. ## Defect The tested Cursor MCP connection did not advertise `capabilities.roots`, preventing the server from discovering the active workspace through `roots/list`. ## Expected Cursor's MCP connection advertises and implements the roots capability when a workspace is available, so MCP servers can determine which repository or workspace is active. ## Acceptance - Cursor advertises `capabilities.roots` for workspace-backed MCP sessions. - `roots/list` returns the active workspace folders. - Servers can resolve an explicitly supplied repository against those roots. ## Files This change belongs in the Cursor MCP client. No file in this repository advertises `capabilities.roots`. ## Source evidence - https://github.com/srmlcn/qa-agent/issues/250 (2026-10-01T03:27:16Z) — #250 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:46:06.809152Z - scout_id: Ca054c8da1a ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.