- Add SharedResidence model and package type detection for .casera files
- Add generateSharePackage API endpoint integration
- Create ResidenceSharingManager for iOS and Android
- Add share button to residence detail screens (owner only)
- Add residence import handling with confirmation dialogs
- Update Quick Look extensions to show house icon for residence packages
- Route .casera imports by type (contractor vs residence)
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Co-Authored-By: Claude <noreply@anthropic.com>
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