## New Feature: Full Screen Slide Preview
- Add SlidePreviewModal component for full screen slide preview in SlideEditor
- ESC key support and temporary hint for user guidance
- Proper aspect ratio handling with theme CSS inheritance
- Modal follows existing UI patterns for consistency
## Import Standards Compliance (31 files updated)
- Fix all imports to use explicit .tsx/.ts extensions per IMPORT_STANDARDS.md
- Eliminate barrel imports in App.tsx for better Vite tree shaking
- Add direct imports with explicit paths across entire codebase
- Preserve CSS imports and external library imports unchanged
## Code Architecture Improvements
- Add comprehensive CSS & Component Architecture Guidelines to CLAUDE.md
- Document modal patterns, aspect ratio handling, and CSS reuse principles
- Reference all coding standards files for consistent development workflow
- Prevent future CSS overcomplication and component duplication
## Performance Optimizations
- Enable Vite tree shaking with proper import structure
- Improve module resolution speed with explicit extensions
- Optimize build performance through direct imports
## Files Changed
- 31 TypeScript/React files with import fixes
- 2 new SlidePreviewModal files (component + CSS)
- Updated project documentation and coding guidelines
- Fixed aspect ratio CSS patterns across components
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
