Gate report: docs/architecture/m-ai-04-gate-audit.md - 29 acceptance criteria: all passed - 1 P0 fixed (cross-user ownership) - 6 P1 archived (0 block test-env Unified) Condition: test-env Unified only, production stays Legacy. CI Docker ready → upgrade to PASS. Co-Authored-By: Claude <noreply@anthropic.com>