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Oracle seed-repeat + floor refinement (2026-06-20, data/qwen_in): - OpenAI floor 0.10 is SEED-ROBUST: 0.05 and 0.075 still detected; 0.10 clean on seeds 0-4 (5/5) -> a random seed is safe. - Gemini floor lowered 0.30 -> 0.25 (0.20 still detected, 0.25 clean on both images). Single-seed (seed 0): the Gemini oracle rate-limits volume seed-repeat, so pin a seed in prod rather than relying on seed-robustness there. Re-measured fidelity at the certified floors (controlnet 0.15 vs Qwen 0.25 for Gemini): faces still favor controlnet (ArcFace 0.546 vs 0.382, lapvar 0.62 vs 0.40); the short-CJK text case is now a TIE (gemini_1 0.037 vs 0.037 -- the earlier Qwen 0.000 was at 0.30, not the floor). Qwen's text win holds on substantial Latin/mixed text (OpenAI 0.385 vs 0.241 / 0.341 vs 0.290). Update watermark_profiles comment, CLAUDE.md, module-internals, known-limitations. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>