Password strength (zxcvbn-ts):
- PasswordStrength component with 4-segment color bar and German feedback
- Lazy-loaded with 150ms debounce to avoid SSR/bundle issues
- Integrated into RegisterPage and ChangePassword components
Magic Links (passwordless email):
- Better Auth magicLink plugin (10-minute expiry)
- sendMagicLinkEmail() in email service (German template)
- Passthrough route for /magic-link/* endpoints
- sendMagicLink() in shared-auth client
- "Login-Link per E-Mail senden" button on all 20 login pages
- All 21 auth stores have sendMagicLink() method
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
1. Passkey Conditional UI: autocomplete="username webauthn" on email
field enables browser passkey suggestions in autofill dropdown
2. Trust Device checkbox: "Diesem Gerät 30 Tage vertrauen" option
during 2FA verification (uses Better Auth trust_device cookie)
3. Local QR code generation: replaced external api.qrserver.com with
local qrcode package for 2FA setup (no external dependency)
4. SecurityOnboarding component: post-registration wizard suggesting
passkey setup to new users
5. ChangePassword component: reusable password change form with
validation, visibility toggles, and changePassword() in authService
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
