test(dashboard): add unit tests for dynamic form components

- Create comprehensive test suite for DynamicField (21 tests)
- Create comprehensive test suite for DynamicConfigForm (10 tests)
- Create comprehensive test suite for FieldHookRegistry (21 tests)
- Configure Vitest 4.0.18 with jsdom environment
- Add test setup with ResizeObserver and matchMedia polyfills
- 52 tests total covering all core functionality

dashboard/vite.config.ts

@@ -1,3 +1,4 @@
+/// <reference types="vitest" />
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 import path from 'path'
@@ -5,6 +6,11 @@ import path from 'path'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './src/test/setup.ts',
+  },
   server: {
     port: 7999,
     proxy: {
@@ -23,6 +29,9 @@ export default defineConfig({
       '@': path.resolve(__dirname, './src'),
     },
   },
+  optimizeDeps: {
+    include: ['react', 'react-dom'],
+  },
   build: {
     rollupOptions: {
       output: {