- Created DDHH_JM_Formidable class with registration form setup
- Programmatic form creation with 5 German-labeled fields
- Email uniqueness validation enforced
- Auto-login after successful registration
- ddhh_provider role assignment on user creation
- Organization name stored as user meta (ddhh_org_name)
- Duplicate submission prevention via email_exists() check
- Password validation (min 8 chars, confirmation match)
- Username generation from email prefix with uniqueness check
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
