Implemented claim/release/next-available/available commands in status.py, .state.lock files for agent coordination, Agent Configuration section in .agent.md, and single-agent zero-overhead guarantee (no locks or claiming in single-agent mode).
## Phase Results
| Phase | Result |
|-------|--------|
| Implementation | ✅ PASS |
| Bug Find | ✅ PASS (2 minor findings) |
| Adversarial Bug Find | ✅ PASS |
| Doc Review | ✅ PASS |
## Findings
- Single-agent mode has zero behavioral overhead (no locks created)
- Claim/release with atomic writes and lock expiry
- Work discovery with priority ordering (tasks closer to completion first)
- Agent Configuration validates phases are covered by at least one agent