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>

database/migrations/008_update_vakum_to_spulna.sql

@@ -0,0 +1,5 @@
+-- Rename vakum column to spulna
+ALTER TABLE filaments RENAME COLUMN vakum TO spulna;
+
+-- Update existing data to use 'spulna' instead of 'vakuum'
+UPDATE filaments SET spulna = REPLACE(spulna, 'vakuum', 'spulna') WHERE spulna LIKE '%vakuum%';