- 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
- Allow login in development mode without ALTCHA verification
- Use BYPASS_DEV_MODE token in development
- Keep ALTCHA widget visible but not blocking in dev mode
- This allows testing while we fix the challenge implementation
