Analysis of scene 01 showed 29% background pixels, mainly caused by: - Plowed/bare fields (no crop match) → add "bare soil and plowed field" - Dark/textured roofs missed by "building" → add "roof and rooftop" - Sports fields/playgrounds → add "sports field and playground" Total: 11 → 14 classes. Palette extended with 3 new colors. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>