Remove refresh icon and fix Safari/WebKit runtime errors

- Removed manual refresh button from frontend (kept auto-refresh functionality)
- Fixed WebKit 'object cannot be found' error by replacing absolute positioning with flexbox
- Added lazy loading to images to prevent preload warnings
- Cleaned up unused imports and variables:
  - Removed unused useRef import
  - Removed unused colors state variable and colorService
  - Removed unused ColorSwatch import from FilamentTableV2
  - Removed unused getModifierIcon function from MaterialBadge
- Updated tests to match current implementation
- Improved layout stability for better cross-browser compatibility
- Removed temporary migration scripts

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/styles/select.css

@@ -21,7 +21,7 @@
   -webkit-border-radius: 0.375rem !important;
   -webkit-padding-end: 2.5rem !important;
   -webkit-padding-start: 0.75rem !important;
-  background-color: field !important;
+  /* Remove forced background color to allow proper theming */
 }
 
 /* Remove Safari's native dropdown arrow */
@@ -39,7 +39,6 @@
 
 .dark .custom-select {
   background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%239ca3af' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e") !important;
-  background-color: rgb(55 65 81) !important;
 }
 
 /* Focus styles */