Desktop culling responsiveness release. Manual keep/trash/review decisions in the culling gallery now update immediately, high-quality RAW previews are restored with bounded idle decoding, gallery status changes are batched until close, and manual culling metadata persists through a background worker. SHA256: 3EF7149CFD026E66FF903CC1BE62B07B401E2382AF6812124CE704C0001A8D2C