Freeze & Resync (Deprecated)

The freeze and resync model was removed in Phase 2 (D-66).

Agents are no longer automatically frozen for missing check-in deadlines. The POST /api/v1/agent/checkin and POST /api/v1/agent/resync endpoints return 410 Gone.

Standing is now market-determined based on heartbeat recency. See Market Staleness for the replacement model.