- Added render_additional_work_sections() method to loop through all sections
- Added render_additional_work_section() to render individual sections with correct field types
- Added render_sonstiges_field() for free text textarea
- Added get_field_key() helper to generate field keys from field names
- Field types: checkbox, abbau_aufbau (radio), checkbox_anzahl, text
- All fields use additional_work[section][key] naming pattern
- Added CSS styling for additional work sections and Sonstiges textarea
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Client-side validation on blur and submit
- Email format validation
- Required field validation
- Furniture items validation (at least one)
- Date field validation
- Inline error messages (no JavaScript alerts)
- Auto-scroll to first error
- Error clearing on field input
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>