Why

The memories MCP list tool should behave like a directory listing, not a recursive tree walk. Recursive results make pagination harder to reason about, return unexpectedly deep paths for scoped requests, and no longer match the intended tool contract.

What Changed

• Changed the local memories backend so list returns only the immediate children of the requested path.
• Preserved file-scoped requests by returning the file itself, and missing paths by returning an empty result.
• Updated cursor handling to paginate over the shallow sibling set and reject cursors past the available results.
• Updated the MCP tool description to say it lists immediate files and directories under a path.
• Reworked the local backend tests to cover shallow top-level listing, shallow scoped listing, sibling ordering, and pagination.

Testing

• cargo test -p codex-memories-mcp