Adds docs/architecture/mcp-restart-governance.md, the restart-governance/v1 ADR
defining who may restart the MCP control plane and under what conditions.
- Recovery ladder (reconnect -> rebind -> scoped restart -> full restart -> host)
with restart stated as the last resort.
- Authorization matrix across author/reviewer/merger/reconciler/controller/
operator/admin; no LLM worker role may perform or authorize a full or host
restart.
- v1 authority decision recorded: controller approval + automated safety gates;
quorum deferred to a superseding ADR.
- Break-glass path with pre-declared incident and mandatory post-hoc audit.
- Ambiguous policy state denies restart.
- Stable policy IDs RG-01..RG-08 for later enforcement code to bind to.
Cross-links the ADR from docs/safety-model.md and docs/webui-deployment.md, and
adds tests/test_mcp_restart_governance_docs.py asserting acceptance criteria 1-5.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
