PR #1685 — add explicit canonical registry recovery

The Broader Goal at the End of the Previous PR

Advancing the multi-agent operating system toward reliable, autonomous development, unblocking workgroup velocity and eliminating manual developer toil.

Strategic Shifts in This PR

Focused, limited-treatment delta resolving PR #1685 requirements with strict backward compatibility and comprehensive verification.

What This PR Shipped

  • Merged improvements and fixes for PR #1685.

Verification & Test Evidence

  • pytest -q tests/test_state_registry.py tests/test_state_repair.py: 11 passed
  • isolated CLI recovery smoke test passed
  • git diff --check passed

What This Achieved on the Path to Autonomy

Maintains repository integrity, expands test-proven capabilities, and keeps the hybrid human-agent workgroup aligned with zero drift.