refactor(@vben-core/form-ui): migrate to Zod 4 and TanStack Form (#8176)

* build(@vben-core/form-ui): update form validation dependencies

* refactor(@vben-core/form-ui): replace vee-validate with TanStack Form

* test(@vben-core/form-ui): cover TanStack Form migration

* docs(@vben/docs): document Zod 4 form migration

* refactor(project): update form adapters

* refactor(project): migrate application form consumers

* refactor(@vben/playground): migrate form examples

* docs(@vben/docs): fix validate return type and required rule empty check in form docs

* fix(@vben-core/form-ui): resolve oxlint and eslint errors

- rewrite nested ternary expressions as if/else in form-field-array.vue and form-runtime.ts
- sort @tanstack/vue-form before @vben-core/composables in package.json

* chore: fix merge artifacts and formatting

- move dependencies before devDependencies in root package.json
- update preferences snapshot for widget positioning fields
- format form-array demo README

* refactor(@vben-core/form-ui): optimize form runtime and value flow

- add fine-grained field selectors and atomic dependency resolution
- expose raw and formatted value snapshots with focused regression coverage

* fix(@vben/layouts): dispose sortable instance on unmount

* docs(@vben/docs): document form runtime API changes

- list added, changed, removed, and deprecated form APIs
- document atomic dependencies and raw versus formatted values

docs/src/_env/adapter/form.ts

@@ -1,6 +1,7 @@
 import type {
+  VbenFormProps as FormProps,
   VbenFormSchema as FormSchema,
-  VbenFormProps,
+  FormValues,
 } from '@vben/common-ui';
 
 import type { ComponentType } from './component';
@@ -24,7 +25,7 @@ setupVbenForm<ComponentType>({
       Upload: 'fileList',
     },
   },
-  defineRules: {
+  rules: {
     required: (value, _params, ctx) => {
       if (value === undefined || value === null || value.length === 0) {
         return $t('ui.formRules.required', [ctx.label]);
@@ -40,9 +41,18 @@ setupVbenForm<ComponentType>({
   },
 });
 
-const useVbenForm = useForm<ComponentType>;
+function useVbenForm<TValues extends FormValues = FormValues>(
+  options: FormProps<ComponentType, Record<never, never>, TValues>,
+) {
+  return useForm<TValues, ComponentType, Record<never, never>>(options);
+}
 
 export { useVbenForm, z };
 
-export type VbenFormSchema = FormSchema<ComponentType>;
-export type { VbenFormProps };
+export type VbenFormSchema<TValues extends FormValues = FormValues> =
+  FormSchema<ComponentType, Record<never, never>, TValues>;
+export type VbenFormProps<TValues extends FormValues = FormValues> = FormProps<
+  ComponentType,
+  Record<never, never>,
+  TValues
+>;