- Add capsule_reports table and admin UI: new /capsule-reports page with list/update handlers
- POST /capsules/:id/entries/:entryId/report: members can report encrypted entries with voluntary decrypted sample
- GET /image-proxy: stream external images (Reddit, GifCities) through server to hide client IPs
- group_chat_tab: add GIF picker, report button, proxy external GIF URLs through ApiConfig.proxyImageUrl()
- api.ts: add list
- Install github.com/altcha-org/altcha-lib-go official library
- Replace custom implementation with official ALTCHA methods
- Use CreateChallenge for proper cryptographic challenges
- Use VerifySolution for proper token verification
- This should fix all ALTCHA verification issues
- Use proper cryptographic challenge generation
- Add HMAC-SHA256 signatures for challenge verification
- Replace test signatures with real cryptographic signatures
- This should fix the verification failures
- Add GetAltchaChallenge method to both auth and admin handlers
- Simple implementation returning test challenge data
- This should fix the route registration issue
- Add ALTCHA service with challenge generation and verification
- Update auth and admin handlers to use ALTCHA tokens
- Replace Turnstile widget with ALTCHA widget in Flutter app
- Update admin frontend to use ALTCHA token
- Add ALTCHA challenge endpoints for both auth and admin
- Maintain development bypass for testing
- Remove Turnstile dependencies from authentication flow
- Add development bypass to Flutter sign_in_screen.dart
- Re-enable Turnstile in admin_handler.go with dev bypass
- Add development bypass to admin login page
- Resolves login issues during development/testing
