Fix: remove broken import in desktop.js that caused 404 and extension load failure

src/systems/ui/desktop.js

@@ -7,7 +7,6 @@ import { i18n } from '../../core/i18n.js';
 import { extensionSettings, lastGeneratedData, committedTrackerData } from '../../core/state.js';
 import { hexToRgba } from './theme.js';
 import { repairJSON } from '../../utils/jsonRepair.js';
-import { invalidateCache } from './renderUtils.js';
 
 /**
  * Helper to parse time string and calculate clock hand angles