Adds docs/mcp-namespace-eof-recovery.md documenting the correct recovery
path when a Gitea MCP namespace (gitea-author/reviewer/merger/tools)
returns `client is closing: EOF`.
Satisfies acceptance criterion 7 of #543: symptom, root cause (closed
client transport vs a live-but-stale process), the sanctioned
reconnect/relaunch sequence, diagnostics to capture, and how
test_mcp_conn.py reproduces the registered-vs-callable gap. Distinguishes
this transport-close failure from the ps-based stale-runtime family in
#531/#544 and reinforces the no-direct-import guard (#558).
Docs-only; no code or test behavior changed.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>