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
- Add new HeritageDiscoverySection and HeritageQuickPrompts components for dedicated heritage discovery view
- Implement reusable AigcConsentDialog component for AI service user agreement prompts
- Update Discovery page to toggle between explore and heritage tab layouts
- Refactor legacy CardSwiper component into generic ExploreCards
- Adjust ChatMainList layout to include home hero sprite animation and restructure welcome section
- Refine NoticeMessage component styling and layout for better consistency
- Add build best practices guidance to AGENTS.md documentation
- Clean up minor config whitespace and formatting issues across files
