Fix vite plugin auto gen when no types

Author: charlesvien

apps/array/src/main/services/types.ts

@@ -2,3 +2,5 @@
  * Auto-import all IPC service types for declaration merging
  * This file is auto-generated by vite-plugin-auto-services.ts
  */
+
+export {};

apps/array/vite-plugin-auto-services.ts

@@ -31,12 +31,15 @@ ${serviceFiles.map((f) => `import "./${f.replace(".ts", ".js")}";`).join("\n")}
 `;
 
     // Generate types.ts (imports type files for declaration merging)
+    const typesImports = typeFiles
+      .map((f) => `import "./${f.replace(".ts", ".js")}";`)
+      .join("\n");
     const typesContent = `/**
  * Auto-import all IPC service types for declaration merging
  * This file is auto-generated by vite-plugin-auto-services.ts
  */
 
-${typeFiles.map((f) => `import "./${f.replace(".ts", ".js")}";`).join("\n")}
+${typesImports || "export {};"}
 `;
 
     // Check if content actually changed before writing