- Move auth logic from page actions to dedicated API routes
(/api/auth/register, /api/auth/login) — React Router page
actions don't handle JSON fetch() properly
- Remove server imports from page components
- Verify registration start works end-to-end with PostgreSQL:
WebAuthn challenge generated, user ID created, RP set to localhost
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>