MnemoBrain v0.5.0

MnemoBrain v0.5.0

Reliability release, driven by real-world breakage reported in issue #6 (Windows/WSL: gbrain serve can look dead to Cursor MCP).

Fixed

• Health-gated start — mnemobrain start gbrain no longer trusts a live pid over a dead listener. Before claiming "already running" it GETs /health; a wedged process is stopped and restarted; if the service is still unhealthy 60s after spawn, start exits non-zero and points at the log file instead of printing a green lie.
• Liveness vs auth split in doctor — new mcp-auth check: a minimal MCP initialize POST with the configured Bearer (env GBRAIN_ADMIN_BOOTSTRAP_TOKEN or <home>/gbrain-admin.token). Verdicts: PASS (200) / FAIL (401 invalid_token → "process alive but token rejected") / SKIP (no token configured, or listener down — liveness is the real problem then). Decision tree credit: @effemmeffe (issue #6).
• Windows/WSL troubleshooting doc — symptom → actual state table + decision flow in docs/OPERATIONS.md, including the known gap that gbrain.log lines carry no timestamps.
• doctor probe reports its real version — MCP clientInfo now comes from the package __version__ instead of a hardcoded string that had already drifted.

Compatibility

No pin changes (mnemosyne-memory 4.0.0b3, GBrain v0.50.0.0), no env-contract changes. Existing installs: pull and re-run mnemobrain install only if you vendor the CLI; nothing else to do.