Added comprehensive improvements to the login and authentication flow:
**UI Improvements:**
- Add password visibility toggle (Eye/EyeOff icons) for password fields
- Improve error message consistency with Dutch translations
- Fix syntax error in login page try-catch block
**Error Handling:**
- Add user-friendly error messages for invalid credentials
- Add specific error codes: invalid_credentials, email_not_confirmed
- Improve error message for non-existent accounts during login
- Handle duplicate email detection during signup with auto-switch to login mode
**Middleware:**
- Add /reset-password and /update-password to public routes
- Fix redirect issue preventing access to password reset flow
**Password Reset Flow:**
- Verify password reset works for magic link users (can set initial password)
- Ensure existing password users can reset their password
- Both flows use the same update mechanism via Supabase
**Documentation:**
- Add comprehensive release notes in docs/RELEASE_AUTH_IMPROVEMENTS.md
All changes maintain backward compatibility with existing magic link users.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add before-user-created hook function for server-side duplicate email detection
- Implement fallback detection using identities array check (Supabase limitation)
- Update signUpWithPassword to detect duplicate emails via hook errors or empty identities
- Add error handling in login page to show duplicate email errors and auto-switch to login mode
- Add auth hook setup documentation and test scripts
- Add password reset and update password flows
- Add email templates for signup confirmation and password reset
