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lib/theme/light.dart: dark at 15 lux or less, bright from 60, held 5 s; Settings shows the reading. The Redmi Pad SE refuses apps its only light sensor (Xiaomi's, from the front camera), so there Auto keeps following Android's dark theme. DASH-NEXT.md records the other lux sources. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>