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

packages/@core/ui-kit/form-ui/package.json

@@ -40,19 +40,19 @@
     }
   },
   "dependencies": {
+    "@tanstack/vue-form": "catalog:",
     "@vben-core/composables": "workspace:*",
     "@vben-core/icons": "workspace:*",
     "@vben-core/shadcn-ui": "workspace:*",
     "@vben-core/shared": "workspace:*",
     "@vben-core/typings": "workspace:*",
-    "@vee-validate/zod": "catalog:",
     "@vueuse/core": "catalog:",
-    "vee-validate": "catalog:",
     "vue": "catalog:",
     "zod": "catalog:",
     "zod-defaults": "catalog:"
   },
   "devDependencies": {
+    "@vue/test-utils": "catalog:",
     "unplugin-vue": "catalog:"
   }
 }