a3cb26b5c80312e3a7ee18654653b5cfdca184a5
- Per-vertex biome lookup was the payload cost (~365 ms); far tiles now take the biome palette from a per-tile grid. Same channels (palette, slope, border blend, UV) and ceiling/ground sections. - Opt-in --max-clip-level=8: 6,498 -> 2,226 tiles, stream 0.876 -> 0.428 s, 1.451 s process wall. Kept opt-in: six fixed views cannot prove every distant thin stratum survives. - W1/W8 hashes equal across 11 outputs; routes 5642/5642; five captures pixel-identical, passage 382 px differ (max delta 16). - Rejected with measurements: LOD6 empty-block proof (-21% samples, no wall gain), far supertiles (no complete groups exist). Remaining long pole: shape compile 0.854 s. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ
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