Merge pull request #615: feat(mcp): codeman mcp, a Model Context Protocol server for any MCP client

docs/api-reference.md

@@ -557,6 +557,8 @@ geometry was read. The capture runs synchronous tmux calls on the server; the
 
 `codeman agent ls|spawn|send|wait|read|interrupt|rm` (`src/cli-agent.ts`) is the command-line client for the endpoints above, for agents the skill does not reach (a pi or shell session, a machine without `jq`). It adds no route: `spawn` is `POST /api/v1/quick-start` (+ `wait-output` on the mode's `capabilities.composerReadyMark` from the CLI registry, where it declares one), `send` is `POST …/input` with `clientId`+`seq` (and `wait`/`waitTimeout` for `--wait` / `--until <signals>`; `delivered:false` without `duplicate` and `wait.ended` both exit 3 — the CLI never reports a dead worker as done), `wait` is `GET …/wait` (`--until`) or `GET …/wait-output` (`--match`, `from=buffer` by default), `read` is `GET …/last-response` or `GET …/terminal?tail=`, `interrupt` is `POST …/input` with a bare `\u001b`, `rm` is `DELETE …/sessions/:id`. A fire-and-forget `send` to a sleeping wake-on-LAN host reads the route's `buffered` (own line, exit 0) and `dropped` (exit 1: the chunk is gone). An id may be the 8-character form `ls` prints, resolved through `GET /api/v1/sessions`; anything shorter refuses before any request, the same floor as `PARENT_SESSION_ID_MIN_PREFIX`. Every call carries `X-Codeman-Parent-Session`; only `spawn`'s quick-start carries `X-Codeman-Agent-Origin: codeman-agent-cli` (the agent-scratch label must never reach a request that cannot create the case directory). Basic auth comes from `CODEMAN_PASSWORD` or the data dir's `.env`. Server-side error codes are shown verbatim (`INVALID_INPUT: until=stop …` on a hook-less mode is not hidden); exit codes are `0` ok, `1` error, `2` timeout, `3` the session exited, `4` refused by a client-side guard. See the README section "`codeman agent`" for the guards and `test/cli-agent.test.ts` for the pinned behaviour.
 
+`codeman mcp` (`src/mcp-server.ts`) is a Model Context Protocol server on stdio over the same endpoints, for MCP clients: `list_sessions` (`GET /api/v1/sessions`), `start_session` (`POST /api/v1/quick-start` with `X-Codeman-Agent-Origin: codeman-mcp`, then `wait-output` on the mode's ready mark), `send_prompt` (`POST …/input` with `wait`/`waitTimeout`), `wait_for_session` (`GET …/wait` or `…/wait-output`), `read_output` (`GET …/last-response` or `…/terminal?tail=`), `interrupt_session` and `delete_session`. It adds no route. The URL comes from `CODEMAN_API_URL` or `--url`, never a guess; prompting, interrupting and deleting are limited to sessions the process started (or the calling session's own children) unless it runs with `--allow-any-session`. See the README section "MCP server" and `test/mcp-server.test.ts`.
+
 ## Prompt uploads (`POST /api/v1/sessions/:id/paste-image`)
 
 A `multipart/form-data` body with one `image` part. The file is written into the