Structural cleanup based on thermo-nuclear code quality review:
- Extract shared color-picker.css and color-popover.css from badges.css (611→85 lines)
- Extract shared lib/presets.js for preset CRUD used by popup and popover
- Unify dark mode to single applyDarkModeClass on <html>, removing 4 scattered functions
- Fix stale closure in startPostObserver, data-driven reload key check
- Remove dead exports, getHelpers wrapper, duplicated colorToHex
- Replace DOM expando properties with state array in popup.js
Net: -318 lines of duplication, no file over 401 lines.
Co-authored-by: Cursor <cursoragent@cursor.com>
Rework card layout from flex to block flow for sidebar compatibility.
Add voting pill capsule with voted-state tinting (orange/purple),
rank badge watermark, custom rt-selected selection system replacing
Reddit/RES classes, density-responsive border radius, bold titles,
and comprehensive dark mode variants for all interactive states.
Co-authored-by: Cursor <cursoragent@cursor.com>
