remove unused znicons font face declaration
resize back button to 36px
adjust search bar styling: remove padding and border, update height
update wallet button padding and remove excess box shadow
adjust inner button border radius to 50px
Add complete travel postcard AIGC creation workflow including:
- New AIGC pages: template selection home, result detail, and history records
- Reusable UI components: template card, flow steps, result preview, action buttons, record lists
- Static assets including template images, fonts and styles
- Updated TopNavBar component to support menu button alignment
- Register new AIGC page routes in pages.json
- Add mock data for templates, user records and result details
