Extract upload dropzone and queue UI with shared pick validation utils.

frontend/vite.config.ts

@@ -3,6 +3,7 @@ import { fileURLToPath } from 'node:url';
 import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 import vue from '@vitejs/plugin-vue';
+import Components from 'unplugin-vue-components/vite';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
@@ -12,5 +13,11 @@ export default defineConfig({
             '@': path.resolve(__dirname, 'src')
         }
     },
-    plugins: [vue(), tailwindcss()]
+    plugins: [
+        vue(),
+        Components({
+            dts: 'src/components.d.ts'
+        }),
+        tailwindcss()
+    ]
 });