meeting-103 v2.1 clean R7+R8 🏆 BREAKTHROUGH: dpmpp_2m karras = pastel 82.43%

R7 (3/5 success, R6-2 sweet spot 확인):
- 7-1: PuLID 0.85 (default ref) → 64.45% (less than R6-2)
- 7-2: PuLID 0.6 (default ref) → 65.93%
- 7-3: seed 999777 → CUDA error
- 7-4: Stage 3 Refiner d=0.20 → CUDA error
- 7-5: Pony V6 60갑자 calligraphy → 18.09% (검정 회피 OK)

R8 (5/5 success, 🏆 거대한 발견):
- 8-1: seed 200000 → 65.73% (variance -3.93pp)
- 8-2: seed 555555 → 64.30%
- 8-3: guidance 2.5 → 62.71% (낮은 guidance = 파스텔 감소)
- 8-4: guidance 5.0 → 69.99% (R6-2와 동일)
- 8-5: dpmpp_2m karras → 🏆 82.43% ⭐⭐⭐⭐⭐ 전체 best (+12.77pp)

⭐ 핵심 발견 2: 샘플러 변경의 dramatic effect
   euler/simple (R6-2 69.66%) → dpmpp_2m/karras (R8-5 82.43%) = +12.77pp

누적 진행 (R9 legacy → R8):
44.5% → 48.5% → 49.99% → 50.47% → 56.41% → 69.66% → 82.43% = +37.93pp

자산 라이브러리:
- workflows: winner_auto 11 + winner_auto_high 4 + winner_auto_breakthrough 1
- 8-5 워크플로 = 타로/12지신/별이 시리즈 재활용 표준 베이스

results/meeting-103-v2.1-clean/round8/meta.json

@@ -0,0 +1,125 @@
+{
+  "round": 8,
+  "captured_at": "2026-05-20T00:14:39",
+  "track": "meeting-103-v2.1-clean",
+  "note": "R8 — R6-2 baseline 안정성·seed variance·guidance·sampler sweep",
+  "combos": [
+    {
+      "id": "8-1",
+      "prompt_id": "2c33be6b-5dbf-4172-8b54-b67b10f6ebb3",
+      "status": "success",
+      "prompt_set": "A",
+      "variant": "R6-2 baseline seed 200000",
+      "models_used": [
+        "flux-dev",
+        "pulid-flux",
+        "flux-redux"
+      ],
+      "size_bytes": 967133,
+      "thumb_size_kb": 332,
+      "width": 768,
+      "height": 1344,
+      "aspect": 0.5714,
+      "black_pct": 0.03,
+      "pastel_pct": 65.73,
+      "filename_local": "8-1.png",
+      "thumb_local": "8-1_thumb.png",
+      "flags": []
+    },
+    {
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+      "prompt_id": "6e96ec64-86ac-416e-8dc7-179b49691a6f",
+      "status": "success",
+      "prompt_set": "A",
+      "variant": "R6-2 baseline seed 555555",
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+      "pastel_pct": 64.3,
+      "filename_local": "8-2.png",
+      "thumb_local": "8-2_thumb.png",
+      "flags": []
+    },
+    {
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+      "prompt_id": "10ad72ed-5bd9-47d5-b28f-facdc906d824",
+      "status": "success",
+      "prompt_set": "A",
+      "variant": "R6-2 baseline + guidance 2.5",
+      "models_used": [
+        "flux-dev",
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+      "filename_local": "8-3.png",
+      "thumb_local": "8-3_thumb.png",
+      "flags": []
+    },
+    {
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+      "prompt_id": "40428b77-ceee-49cf-a21e-6100ad0b5de3",
+      "status": "success",
+      "prompt_set": "A",
+      "variant": "R6-2 baseline + guidance 5.0",
+      "models_used": [
+        "flux-dev",
+        "pulid-flux",
+        "flux-redux"
+      ],
+      "size_bytes": 927168,
+      "thumb_size_kb": 316,
+      "width": 768,
+      "height": 1344,
+      "aspect": 0.5714,
+      "black_pct": 0.47,
+      "pastel_pct": 69.99,
+      "filename_local": "8-4.png",
+      "thumb_local": "8-4_thumb.png",
+      "flags": []
+    },
+    {
+      "id": "8-5",
+      "prompt_id": "a1017d9e-cc6d-4ff8-b591-d48216f4101f",
+      "status": "success",
+      "prompt_set": "A",
+      "variant": "R6-2 baseline + dpmpp_2m karras",
+      "models_used": [
+        "flux-dev",
+        "pulid-flux",
+        "flux-redux"
+      ],
+      "size_bytes": 775731,
+      "thumb_size_kb": 218,
+      "width": 768,
+      "height": 1344,
+      "aspect": 0.5714,
+      "black_pct": 0.0,
+      "pastel_pct": 82.43,
+      "filename_local": "8-5.png",
+      "thumb_local": "8-5_thumb.png",
+      "flags": []
+    }
+  ],
+  "learning": {
+    "passed_count": 5,
+    "failed_count": 0,
+    "best_pastel_id": "8-5",
+    "best_pastel_pct": 82.43,
+    "r6_best": 69.66
+  }
+}