feat(14.2.1-05): hydrate ML create/GET/save through TranslatedExact

Form schema meta lists enabled locales, Show/save expand mltext maps
without D-11 fallback, and the SPA seeds and adopt-merges every locale.

Co-authored-by: Cursor <cursoragent@cursor.com>

admin/tests/form/MLFields.test.ts

@@ -1,10 +1,12 @@
 import { afterEach, beforeEach, describe, expect, it } from 'vitest'
 import { enableAutoUnmount, mount } from '@vue/test-utils'
+import { ref } from 'vue'
 import type { FormField } from '../../src/api/types'
 import MarkdownField from '../../src/components/form/fields/MarkdownField.vue'
 import MLMarkdownField from '../../src/components/form/fields/MLMarkdownField.vue'
 import MLTextField from '../../src/components/form/fields/MLTextField.vue'
-import { editablePayload } from '../../src/components/form/formState'
+import { FORM_ENABLED_LOCALES } from '../../src/components/form/formContext'
+import { editablePayload, initialValues, mergeMLValue } from '../../src/components/form/formState'
 import { isRegistered, rendererFor } from '../../src/components/form/registry'
 import { resetState } from '../helpers'
 
@@ -12,8 +14,23 @@ function field(type: string, name = 'title'): FormField {
   return { name, label: 'Title', type } as FormField
 }
 
+const enabledLocales = ref<readonly string[]>(['en', 'pl'])
+
+function mlMount(component: typeof MLTextField | typeof MLMarkdownField, props: Record<string, unknown>) {
+  return mount(component, {
+    props,
+    attachTo: document.body,
+    global: {
+      provide: {
+        [FORM_ENABLED_LOCALES as symbol]: enabledLocales,
+      },
+    },
+  })
+}
+
 beforeEach(() => {
   resetState()
+  enabledLocales.value = ['en', 'pl']
 })
 
 afterEach(() => {
@@ -45,13 +62,10 @@ describe('ML field registry and nested save body', () => {
   })
 
   it('edits the active locale and copies from another', async () => {
-    const wrapper = mount(MLTextField, {
-      props: {
-        field: field('mltext'),
-        modelValue: { en: 'Hello', pl: 'Witaj' },
-        controlId: 'f-title',
-      },
-      attachTo: document.body,
+    const wrapper = mlMount(MLTextField, {
+      field: field('mltext'),
+      modelValue: { en: 'Hello', pl: 'Witaj' },
+      controlId: 'f-title',
     })
     const input = wrapper.find('input')
     expect(input.element.value).toBe('Hello')
@@ -63,13 +77,15 @@ describe('ML field registry and nested save body', () => {
   })
 
   it('switches every ML control from one selector', async () => {
-    const title = mount(MLTextField, {
-      props: { field: field('mltext'), modelValue: { en: 'Hello', pl: 'Witaj' }, controlId: 'f-title' },
-      attachTo: document.body,
+    const title = mlMount(MLTextField, {
+      field: field('mltext'),
+      modelValue: { en: 'Hello', pl: 'Witaj' },
+      controlId: 'f-title',
     })
-    const body = mount(MLMarkdownField, {
-      props: { field: field('mlmarkdown', 'body'), modelValue: { en: 'EN', pl: 'PL' }, controlId: 'f-body' },
-      attachTo: document.body,
+    const body = mlMount(MLMarkdownField, {
+      field: field('mlmarkdown', 'body'),
+      modelValue: { en: 'EN', pl: 'PL' },
+      controlId: 'f-body',
     })
     expect(body.findComponent(MarkdownField).exists()).toBe(true)
     await title.find('[data-ml-locale]').setValue('pl')
@@ -92,4 +108,31 @@ describe('ML field registry and nested save body', () => {
     expect((window as unknown as { __ml_xss?: number }).__ml_xss).toBeUndefined()
     expect(wrapper.find('[data-markdown-preview-pane]').text()).toContain('<script>')
   })
+
+  it('seeds empty maps and lists every enabled locale on create', () => {
+    const fields = [field('mltext')]
+    const values = initialValues(fields, ['en', 'pl'])
+    expect(values.title).toEqual({ en: '', pl: '' })
+    const wrapper = mlMount(MLTextField, {
+      field: fields[0],
+      modelValue: values.title,
+      controlId: 'f-title',
+    })
+    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
+  })
+
+  it('keeps sibling locales when adopt merges a GET host string', async () => {
+    const fields = [field('mltext')]
+    const merged = mergeMLValue('Hello', ['en', 'pl'])
+    expect(merged).toEqual({ en: 'Hello', pl: '' })
+    const wrapper = mlMount(MLTextField, {
+      field: fields[0],
+      modelValue: merged,
+      controlId: 'f-title',
+    })
+    expect(wrapper.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
+    await wrapper.find('[data-ml-locale]').setValue('pl')
+    await wrapper.find('input').setValue('Witaj')
+    expect(wrapper.emitted('update:modelValue')?.at(-1)).toEqual([{ en: 'Hello', pl: 'Witaj' }])
+  })
 })