shared-types/src/index.ts re-exports with explicit .ts extensions
(Tailwind v4 module resolver needs them). TS 5.7 requires consumers
to opt in via allowImportingTsExtensions. The flag only type-checks
when noEmit:true; the NestJS builder also needs
rewriteRelativeImportExtensions so tsc still emits valid JS.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Add vCard/CSV file import with duplicate detection and merge options
- Add Google Contacts OAuth2 integration for importing from Google
- Add vCard/CSV export with format selection and filtering options
- Add connected_accounts table for OAuth token storage
- Add FileUploader, ImportPreview, GoogleImport components
- Add ExportModal with format selection (vCard/CSV)
- Add i18n translations for import/export (DE/EN)