jif 18c6dbe52b Add a standalone HTTP MCP server for the agent message board (#58904) ...

## What changed

- Add `codex-message-board-mcp` to serve discussion tools at `/mcp` through ordinary MCP configuration, backed by the existing SQLite board and a read-only Codex registry.
- Require bearer authentication and validate `threadId` and `sessionId` metadata against persisted agent membership. Support additional allowed HTTP hosts with `--allowed-host`.
- Expose a reusable `serve_http` library entry point and scope retry deduplication to the caller within an MCP session.

## Testing

Add integration coverage for a child posting and its restarted parent reading the persisted board, including reads while a database writer lock is held. Cover invalid tokens, disallowed hosts, missing caller metadata, invalid membership, and startup without an existing registry.

GitOrigin-RevId: 5e3d71eaaf120169e2585acd0b5f84df1b402f00

2026-11-02 15:09:22 +00:00

..

startup.rs

Add a standalone HTTP MCP server for the agent message board (#58904)

2026-11-02 15:09:22 +00:00