- Added routes for registration steps 2, 3, and 4 in app_router.dart.
- Created AmRegisterStep2Screen for entering professional details including birth date, city, country, social security number, agreement number, and max children.
- Implemented validation for social security number and max children fields.
- Developed AmRegisterStep3Screen for entering a motivation message and accepting terms and conditions.
- Created AmRegisterStep4Screen to display a summary of the registration data for review before submission.
- Introduced SummaryCard widget for displaying user information in a structured format.
- Enhanced DataGenerator utility to provide realistic data for testing.
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