New Features:
- Hybrid approach for accessing OAuth claims
- Direct attribute access with IDE autocomplete
- Claims dictionary for flexible access to all userinfo data
- Support for all OAuth server claims:
  * teamspeak_id, discord_id, ingame_phone, fivem_role
  * name_prefix, email_verified, user_type, user_status

Benefits:
- Backwards compatible with existing code
- Type safety and IDE autocomplete for known fields
- Future-proof - new claims automatically available via claims dict
- No code changes needed for future claim additions