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ITEM 1 — k CAP + REASON FIELD The hybrid_search default k was hard-coded to 10. For multi-fill events (5× expansion, 4× emergency) that's pool=10 → propose 5-of-10, half the candidates become the answer with no room for rejection. Executor prompt now instructs k to scale with target_count: k = max(count*5, 20), cap 80. Default helper bumped 10 → 20. Fill.reason dropped from required to optional. Nothing downstream ever consumed it — resolveWorkerIds, sealSale, retrospective all use candidate_id and name. Models loved to write 100-150 char justifications per fill; on 4+ fills that blew the JSON budget before the structure closed. Test 1 run result after this change: FIRST EVER 5/5 on the Riverfront Steel scenario, 13 total turns across 5 events. The event that failed last run (emergency 4×Loader with truncated reason-field continuation) now clears in 2 turns. Progression: mistral baseline: 0/5 qwen3.5 + continuation + think:false: 4/5 qwen3.5 + k=20 + no-reason: 5/5 ✓ ITEM 2 — SCENARIO GENERATOR (NOT YET TESTED E2E) tests/multi-agent/gen_scenarios.ts emits N deterministic ScenarioSpecs with varied clients (15 companies), cities (20 Midwest cities known to exist in workers_500k), role mixes (14 industrial staffing roles, weighted realistic), and event sequences. Each gets a unique sig_hash so the KB populates with distinct neighbor signatures. scripts/run_kb_batch.sh runs all generated specs sequentially against scenario.ts, logs per-scenario outcomes, and reports KB state at the end. Each run takes ~2-4min; 20-30 scenarios = 1-2hr unattended. Next: test the generator+batch on a small N (3-5) to verify KB populates correctly and pathway recommendations start getting neighbor signal instead of cold-starts. Then item 3 (Rust re-weighting of hybrid_search by playbook_memory success).