Dark mode:
- Toggle now applies data-theme='dark' attribute to <html>
- Theme applied immediately on page load to prevent FOUC
- Comprehensive dark mode CSS covering all UI components:
sidebar, top bar, search, file cards, list view, context
menus, modals, dialogs, notifications, user menu, etc.
Search:
- Add Authorization headers to all search API fetch calls
(searchFiles, advancedSearch, clearSearchCache)
- Fix missing checkbox column in search results list header
Dionisio