Refactor clawx (#344)

Co-authored-by: ashione <skyzlxuan@gmail.com>

electron/services/providers/store-instance.ts

@@ -0,0 +1,23 @@
+// Lazy-load electron-store (ESM module) from the main process only.
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let providerStore: any = null;
+
+export async function getClawXProviderStore() {
+  if (!providerStore) {
+    const Store = (await import('electron-store')).default;
+    providerStore = new Store({
+      name: 'clawx-providers',
+      defaults: {
+        schemaVersion: 0,
+        providers: {} as Record<string, unknown>,
+        providerAccounts: {} as Record<string, unknown>,
+        apiKeys: {} as Record<string, string>,
+        providerSecrets: {} as Record<string, unknown>,
+        defaultProvider: null as string | null,
+        defaultProviderAccountId: null as string | null,
+      },
+    });
+  }
+
+  return providerStore;
+}