- Add search-as-you-type functionality with 500ms debounce
- Implement search across contact names and DIDs, project names and handleIds
- Add loading spinner and dynamic clear button
- Add $contactsByDateAdded() method to PlatformServiceMixin for newest-first sorting
- Update GiftedDialog to use date-based contact ordering
- Maintain backward compatibility with existing $contacts() alphabetical sorting
- Add proper cleanup for search timeouts on component unmount
The search feature provides real-time filtering with visual feedback,
while the new sorting ensures recently added contacts appear first.
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