- Create platform_signup_service.py for signup flow operations
- Create platform_pricing_service.py for pricing data operations
- Refactor signup.py, pricing.py, letzshop_vendors.py to use services
- Add # public markers to all platform endpoints
- Update tests for correct mock paths and status codes
Fixes architecture validation errors (API-002, API-003, SVC-006).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
