- Add /settings/ui GET and PUT endpoints for UI settings - Improve ThemeContext with better initialization and auto accent handling - Update SidebarContext with expanded state persistence - Fix context initialization in ModulesContext and ViewModeContext - Update components to use improved theme/sidebar contexts 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>