Cart management improvements:
- Added cart endpoints to public API allowlist (getOrCreateCart, setLineItem, getCart, submit)
- Fixed setLineItem null parameter handling for remarks
- Standardized API responses to use uppercase keys (ORDER, ORDERLINEITEMS)
- Updated getCart to match response format consistency
- Added CategoryName to menu items endpoint
These changes enable the mobile app to browse menu with categories and manage cart operations without authentication.
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
