[cschanhniem]

Implements Q5 from NEXT_100_PR_MAP — closes Phase Q.

What

• src/openamp_foundry/evidence/phase_q_completeness_gate.py: PQG- schema; PhaseQCompletenessGate dataclass (12 fields); validate_phase_q_completeness_gate(); build_phase_q_completeness_gate() (enforces dry_lab_only=False); format_phase_q_completeness_gate()
• REQUIRED_RECORD_TYPES (4): BSP, WHR, PCU, HCR
• VALID_LOOP_VERDICTS (4): loop_complete, loop_partial, loop_not_started, loop_broken
• tests/evidence/test_phase_q_completeness_gate.py: 63 tests in 5 classes
• BASELINE: 8837 → 8900

Disconfirming pass

• dry_lab_only=True blocked (tested) — real wet-lab loop required
• TOY- candidate_family_id blocked (tested)
• loop_complete requires all 4 record types (tested each individually)
• loop_complete blocks cross_link_failures (tested)
• loop_complete blocks missing_record_types (tested)
• loop_not_started blocks any WHR/PCU/HCR records (tested each)
• n_candidates_with_hcr > n_candidates_with_whr blocked (tested)
• invalid ID prefixes blocked for all record types (BSP/WHR/PCU/HCR tested)