* feat: add data export/import functionality
- Add /export and /import API endpoints with schema-independent JSON format
- Export includes: medications, dose history, settings, share links
- Uses _exportId references for medications, remapped on import
- Images exported as base64 data URLs
- Optional sensitive data inclusion (shoutrrr URLs, etc.)
- Import replaces all existing data with confirmation warning
- Add comprehensive test coverage
- Add English and German translations
- Add frontend UI in Settings page with export/import controls
* fix: correct JSX structure and TypeScript types
- Fix modal placement outside ternary expression in Settings
- Add type assertion for request.body in import route test
* docs: translate copilot-instructions to English
- Add explicit rule that English is the primary language
- Translate all German sections to English
- User may communicate in German, but all project artifacts must be English
Daniel Volz
ffab9ef4da