feat: enhance theme management and image caching functionality

electron/main.ts

@@ -3,6 +3,7 @@ import { CONFIG_KEYS } from '@lib/constants'
 import { setupMainWindow } from './wins';
 import started from 'electron-squirrel-startup'
 import configManager from '@electron/service/config-service'
+import themeManager from '@electron/service/theme-service'
 import { runTaskOperationService } from '@electron/process/runTaskOperationService'
 import { initScriptStoreService } from '@electron/service/script-store-service'
 import log from 'electron-log';
@@ -154,6 +155,7 @@ if (started) {
 
 app.whenReady().then(async () => {
   await configManager.init();
+  await themeManager.init();
 
   gatewayManager.init();