docs: record Hermes round-trip QA

[cafitac]

Summary

• record the completed Hermes MCP registration/live-smoke fixes from PR Fix Hermes MCP smoke false positives #67/Fix Hermes MCP registration verification #69 and v0.3.67
• document the successful direct stdio MCP run_task → register_task → check_task round-trip through Gateway/AgentLoop/provider
• call out the generic Python MCP SDK warning for notifications/claude/channel as compatibility noise to watch, not a failed smoke

QA

• hermes mcp list
• hermes mcp test hermit-channel
• ./bin/gateway.sh --daemon && ./bin/gateway.sh --status
• direct MCP stdio client against hermit mcp-server returned status: done, result: "HERMIT_E2E_OK"
• .venv/bin/python -m pytest tests/test_repo_hygiene.py -q
• .venv/bin/python -m pytest tests/ -q