fix(form-ui): support native zod string format defaults

.changeset/bright-zebras-default.md

@@ -0,0 +1,5 @@
+---
+'@vben-core/form-ui': patch
+---
+
+fix(@vben-core/form-ui): initialize native Zod string formats with empty values

packages/@core/ui-kit/form-ui/__tests__/form-integration.test.ts

@@ -78,6 +78,32 @@ afterEach(() => {
 });
 
 describe('useVbenForm integration', () => {
+  it('provides empty defaults for native zod string formats', async () => {
+    const [Form, formApi] = useVbenForm({
+      schema: [
+        {
+          component: TestInput,
+          fieldName: 'email',
+          rules: z.email(),
+        },
+        {
+          component: TestInput,
+          fieldName: 'address',
+          rules: z.ipv4(),
+        },
+      ],
+      showDefaultActions: false,
+    });
+    const wrapper = mount(Form);
+    wrappers.push(wrapper);
+    await flushPromises();
+
+    expect(await formApi.getValues()).toEqual({
+      address: '',
+      email: '',
+    });
+  });
+
   it('uses model updates as the primary channel and preserves empty strings', async () => {
     const validateValue = vi.fn();
     const [Form, formApi] = useVbenForm({

packages/@core/ui-kit/form-ui/src/use-form-context.ts

@@ -9,7 +9,14 @@ import { computed, toRaw, unref, useSlots } from 'vue';
 import { createContext } from '@vben-core/shadcn-ui';
 import { isString, mergeWithArrayOverride, set } from '@vben-core/shared/utils';
 
-import { object, ZodIntersection, ZodNumber, ZodObject, ZodString } from 'zod';
+import {
+  object,
+  ZodIntersection,
+  ZodNumber,
+  ZodObject,
+  ZodString,
+  ZodStringFormat,
+} from 'zod';
 import { getDefaultsForSchema } from 'zod-defaults';
 
 import { useFormRuntime } from './form-runtime';
@@ -74,8 +81,8 @@ export function useFormInitial(
   // 自定义默认值提取逻辑
   function getCustomDefaultValue(rule: any): any {
     rule = toRaw(rule);
-    if (rule instanceof ZodString) {
-      return ''; // 默认为空字符串
+    if (rule instanceof ZodString || rule instanceof ZodStringFormat) {
+      return ''; // 字符串及其格式校验默认为空字符串
     } else if (rule instanceof ZodNumber) {
       return null; // 默认为 null（避免显示 0）
     } else if (rule instanceof ZodObject) {