6f6581d38d
- Add onFilterOpChange handler on <select class=sa-filter-op> - When operator is is_empty/not_empty: disable value select, show '— 无值 —' - When switching back to eq/neq/contains/etc: re-enable and re-fetch values - Fixes issue where changing operator before selecting column left value dropdown disabled permanently - Remove operator check from onFilterColChange (now handled separately) Co-Authored-By: Claude <noreply@anthropic.com>