Remove all reading mode support - edit mode only plugin
- Deleted markdown-postprocessor.ts (reading mode widgets)
- Deleted inline-rating-widget.ts (reading mode custom elements)
- Updated plugin to only register editor extension
- Cleaned CSS to only include editor widget styles
- Updated README to clarify edit-mode-only functionality
- Bundle size reduced from 24.1kb to 16.1kb
- Enhanced editor widget with click position detection for half vs full symbols
- Added hover preview with proper half-symbol rendering
- Expanded symbol patterns with more half-symbol definitions
- Improved CSS styling with visual feedback for half-symbol interactions
- Added comprehensive test file with examples
move all the static css (not the one calculated at runtime) to the styles.css file
```git-revs
77478de (Base revision)
5b3d66e Remove static CSS from ratings-overlay.ts and only keep dynamic styles
142a142 Remove static CSS from symbol span elements
c72fd23 Update the overlay CSS with static styles that were previously in JS
HEAD Update symbol styles with static styles that were previously in JS
```
codemcp-id: 52-refactor-move-static-css-to-styles-css-file