refactor: main code

src/main/services/ConfigManager.ts

@@ -0,0 +1,19 @@
+import Store from 'electron-store'
+
+export class ConfigManager {
+  private store: Store
+
+  constructor() {
+    this.store = new Store()
+  }
+
+  getTheme(): 'light' | 'dark' {
+    return this.store.get('theme', 'light') as 'light' | 'dark'
+  }
+
+  setTheme(theme: 'light' | 'dark') {
+    this.store.set('theme', theme)
+  }
+}
+
+export const configManager = new ConfigManager()