feat(14.2.1-03): add markdown and multilingual cabana fields

Lift locale maps before ProjectWritableFields so a Journal-shaped save can persist the default host scalar and non-default locales through TranslationWriter without dropping nested JSON.

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

admin/src/components/form/fields/MLMarkdownField.vue

@@ -0,0 +1,109 @@
+<script setup lang="ts">
+import { computed, onMounted, onUnmounted, ref } from 'vue'
+import type { FieldControlProps } from '../control'
+import MarkdownField from './MarkdownField.vue'
+import { ML_LOCALE_CHANGE, broadcastMLLocale, localeRecord } from '../mlLocale'
+
+const props = defineProps<FieldControlProps>()
+const emit = defineEmits<{ 'update:modelValue': [value: Record<string, string>] }>()
+
+const values = computed(() => localeRecord(props.modelValue))
+const locales = computed(() => {
+  const keys = Object.keys(values.value)
+  return keys.length > 0 ? keys : ['en']
+})
+const activeLocale = ref(locales.value[0] ?? 'en')
+const copyFrom = ref('')
+
+const labelledBy = computed(() => `${props.controlId}-label`)
+const editorId = computed(() => `${props.controlId}-editor`)
+const activeText = computed(() => values.value[activeLocale.value] ?? '')
+const otherLocales = computed(() => locales.value.filter((code) => code !== activeLocale.value))
+const markdownField = computed(() => ({ ...props.field, type: 'markdown' }))
+
+function setLocale(locale: string) {
+  if (!locale) {
+    return
+  }
+  activeLocale.value = locale
+  if (!copyFrom.value || copyFrom.value === locale) {
+    copyFrom.value = otherLocales.value[0] ?? ''
+  }
+}
+
+function onLocaleInput(event: Event) {
+  const locale = (event.target as HTMLSelectElement).value
+  setLocale(locale)
+  broadcastMLLocale(locale)
+}
+
+function onText(text: string) {
+  emit('update:modelValue', { ...values.value, [activeLocale.value]: text })
+}
+
+function copyLocale() {
+  const from = copyFrom.value
+  if (!from || from === activeLocale.value) {
+    return
+  }
+  emit('update:modelValue', { ...values.value, [activeLocale.value]: values.value[from] ?? '' })
+}
+
+function onBroadcast(event: Event) {
+  const locale = (event as CustomEvent<string>).detail
+  if (typeof locale === 'string' && locale !== '') {
+    setLocale(locale)
+  }
+}
+
+onMounted(() => {
+  window.addEventListener(ML_LOCALE_CHANGE, onBroadcast)
+  copyFrom.value = otherLocales.value[0] ?? ''
+})
+onUnmounted(() => {
+  window.removeEventListener(ML_LOCALE_CHANGE, onBroadcast)
+})
+</script>
+
+<template>
+  <div class="flex flex-col gap-1.5" role="group" :aria-labelledby="labelledBy" data-ml-field="mlmarkdown">
+    <div class="flex flex-wrap items-center gap-2">
+      <select
+        data-ml-locale
+        class="rounded-control border border-border-strong bg-surface px-2 py-1 text-[13px]"
+        :value="activeLocale"
+        :aria-label="`Locale for ${field.label || field.name}`"
+        @change="onLocaleInput"
+      >
+        <option v-for="code in locales" :key="code" :value="code">{{ code }}</option>
+      </select>
+      <select
+        v-if="otherLocales.length > 0"
+        data-ml-copy-from
+        class="rounded-control border border-border-strong bg-surface px-2 py-1 text-[13px]"
+        :value="copyFrom"
+        aria-label="Copy from locale"
+        @change="copyFrom = ($event.target as HTMLSelectElement).value"
+      >
+        <option v-for="code in otherLocales" :key="code" :value="code">{{ code }}</option>
+      </select>
+      <button
+        v-if="otherLocales.length > 0"
+        type="button"
+        data-ml-copy
+        class="rounded-pager px-2 py-1 text-[13px] text-muted hover:bg-hover hover:text-text"
+        @click="copyLocale"
+      >
+        Copy
+      </button>
+    </div>
+    <MarkdownField
+      :field="markdownField"
+      :model-value="activeText"
+      :control-id="editorId"
+      :invalid="invalid"
+      :described-by="describedBy"
+      @update:model-value="onText"
+    />
+  </div>
+</template>

admin/src/components/form/fields/MLTextField.vue

@@ -0,0 +1,108 @@
+<script setup lang="ts">
+import { computed, onMounted, onUnmounted, ref } from 'vue'
+import type { FieldControlProps } from '../control'
+import TextField from './TextField.vue'
+import { ML_LOCALE_CHANGE, broadcastMLLocale, localeRecord } from '../mlLocale'
+
+const props = defineProps<FieldControlProps>()
+const emit = defineEmits<{ 'update:modelValue': [value: Record<string, string>] }>()
+
+const values = computed(() => localeRecord(props.modelValue))
+const locales = computed(() => {
+  const keys = Object.keys(values.value)
+  return keys.length > 0 ? keys : ['en']
+})
+const activeLocale = ref(locales.value[0] ?? 'en')
+const copyFrom = ref('')
+
+const labelledBy = computed(() => `${props.controlId}-label`)
+const editorId = computed(() => `${props.controlId}-editor`)
+const activeText = computed(() => values.value[activeLocale.value] ?? '')
+const otherLocales = computed(() => locales.value.filter((code) => code !== activeLocale.value))
+
+function setLocale(locale: string) {
+  if (!locale) {
+    return
+  }
+  activeLocale.value = locale
+  if (!copyFrom.value || copyFrom.value === locale) {
+    copyFrom.value = otherLocales.value[0] ?? ''
+  }
+}
+
+function onLocaleInput(event: Event) {
+  const locale = (event.target as HTMLSelectElement).value
+  setLocale(locale)
+  broadcastMLLocale(locale)
+}
+
+function onText(text: string) {
+  emit('update:modelValue', { ...values.value, [activeLocale.value]: text })
+}
+
+function copyLocale() {
+  const from = copyFrom.value
+  if (!from || from === activeLocale.value) {
+    return
+  }
+  emit('update:modelValue', { ...values.value, [activeLocale.value]: values.value[from] ?? '' })
+}
+
+function onBroadcast(event: Event) {
+  const locale = (event as CustomEvent<string>).detail
+  if (typeof locale === 'string' && locale !== '') {
+    setLocale(locale)
+  }
+}
+
+onMounted(() => {
+  window.addEventListener(ML_LOCALE_CHANGE, onBroadcast)
+  copyFrom.value = otherLocales.value[0] ?? ''
+})
+onUnmounted(() => {
+  window.removeEventListener(ML_LOCALE_CHANGE, onBroadcast)
+})
+</script>
+
+<template>
+  <div class="flex flex-col gap-1.5" role="group" :aria-labelledby="labelledBy" data-ml-field="mltext">
+    <div class="flex flex-wrap items-center gap-2">
+      <select
+        data-ml-locale
+        class="rounded-control border border-border-strong bg-surface px-2 py-1 text-[13px]"
+        :value="activeLocale"
+        :aria-label="`Locale for ${field.label || field.name}`"
+        @change="onLocaleInput"
+      >
+        <option v-for="code in locales" :key="code" :value="code">{{ code }}</option>
+      </select>
+      <select
+        v-if="otherLocales.length > 0"
+        data-ml-copy-from
+        class="rounded-control border border-border-strong bg-surface px-2 py-1 text-[13px]"
+        :value="copyFrom"
+        aria-label="Copy from locale"
+        @change="copyFrom = ($event.target as HTMLSelectElement).value"
+      >
+        <option v-for="code in otherLocales" :key="code" :value="code">{{ code }}</option>
+      </select>
+      <button
+        v-if="otherLocales.length > 0"
+        type="button"
+        data-ml-copy
+        class="rounded-pager px-2 py-1 text-[13px] text-muted hover:bg-hover hover:text-text"
+        @click="copyLocale"
+      >
+        Copy
+      </button>
+    </div>
+    <TextField
+      :field="{ ...field, type: 'text' }"
+      :model-value="activeText"
+      :control-id="editorId"
+      :invalid="invalid"
+      :described-by="describedBy"
+      @update:model-value="onText"
+    />
+  </div>
+</template>

admin/src/components/form/fields/MarkdownField.vue

@@ -0,0 +1,51 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import { controlAttributes, controlClass, type FieldControlProps } from '../control'
+
+// Source editor for type: markdown. Preview interpolates text (never v-html)
+// so translated raw HTML/script cannot execute in the admin SPA. Server
+// preview uses cabana.RenderMarkdown (goldmark without html.WithUnsafe).
+const props = defineProps<FieldControlProps>()
+const emit = defineEmits<{ 'update:modelValue': [value: string] }>()
+
+const rowsBySize: Record<string, number> = { tiny: 2, small: 4, large: 8, huge: 12, giant: 18 }
+const rows = computed(() => rowsBySize[props.field.size ?? ''] ?? 8)
+const text = computed(() => (props.modelValue === null || props.modelValue === undefined ? '' : String(props.modelValue)))
+const attrs = computed(() => controlAttributes(props.field))
+const preview = ref(false)
+</script>
+
+<template>
+  <div class="flex flex-col gap-1.5">
+    <button
+      type="button"
+      data-markdown-preview
+      class="self-start rounded-pager px-2 py-1 text-[13px] text-muted hover:bg-hover hover:text-text"
+      :aria-pressed="preview ? 'true' : 'false'"
+      @click="preview = !preview"
+    >
+      Preview
+    </button>
+    <pre
+      v-if="preview"
+      data-markdown-preview-pane
+      :class="controlClass(invalid)"
+      class="min-h-input overflow-auto px-3.5 py-2.5 whitespace-pre-wrap"
+    >{{ text }}</pre>
+    <textarea
+      v-else
+      :id="controlId"
+      v-bind="attrs"
+      :name="field.name"
+      :rows="rows"
+      :value="text"
+      :required="field.required || undefined"
+      :aria-required="field.required ? 'true' : undefined"
+      :aria-invalid="invalid ? 'true' : undefined"
+      :aria-describedby="describedBy || undefined"
+      :class="controlClass(invalid)"
+      class="min-h-input resize-y py-2.5"
+      @input="emit('update:modelValue', ($event.target as HTMLTextAreaElement).value)"
+    />
+  </div>
+</template>

admin/src/components/form/formState.ts

@@ -2,8 +2,11 @@
 // filtering, the save payload, 422 detail mapping and focus.
 import type { AdminRecord, ErrorBody, FormField } from '../../api/types'
 import { permissionValues } from './control'
+import { localeRecord } from './mlLocale'
 import { isRegistered } from './registry'
 
+export { ML_LOCALE_CHANGE, broadcastMLLocale, localeRecord } from './mlLocale'
+
 /** The screen a field is filtered for: the two form modes and the read-only preview (D-11). */
 export type FormMode = 'create' | 'update' | 'preview'
 
@@ -62,6 +65,10 @@ export function editablePayload(fields: FormField[], values: AdminRecord, mode:
       out[field.name] = permissionValues(field, value)
       continue
     }
+    if (field.type === 'mltext' || field.type === 'mlmarkdown') {
+      out[field.name] = localeRecord(value)
+      continue
+    }
     if (value !== undefined) {
       out[field.name] = value
     }
@@ -95,6 +102,8 @@ export function initialValues(fields: FormField[]): AdminRecord {
       out[field.name] = false
     } else if (field.type === 'relation' && field.multiple) {
       out[field.name] = []
+    } else if (field.type === 'mltext' || field.type === 'mlmarkdown') {
+      out[field.name] = {}
     }
   }
   return out

admin/src/components/form/mlLocale.ts

@@ -0,0 +1,24 @@
+/** Window event that keeps every ML control on one active locale. */
+export const ML_LOCALE_CHANGE = 'summer:ml-locale'
+
+/** Broadcast the locale the administrator selected on any ML control. */
+export function broadcastMLLocale(locale: string): void {
+  if (typeof window === 'undefined' || locale === '') {
+    return
+  }
+  window.dispatchEvent(new CustomEvent(ML_LOCALE_CHANGE, { detail: locale }))
+}
+
+/** Locale → text map as it is sent on save: only string values. */
+export function localeRecord(value: unknown): Record<string, string> {
+  const out: Record<string, string> = {}
+  if (value === null || typeof value !== 'object' || Array.isArray(value)) {
+    return out
+  }
+  for (const [locale, text] of Object.entries(value as Record<string, unknown>)) {
+    if (typeof text === 'string') {
+      out[locale] = text
+    }
+  }
+  return out
+}

admin/src/components/form/registry.ts

@@ -28,6 +28,9 @@ import RelationField from './fields/RelationField.vue'
 import SwitchField from './fields/SwitchField.vue'
 import TextField from './fields/TextField.vue'
 import TextareaField from './fields/TextareaField.vue'
+import MarkdownField from './fields/MarkdownField.vue'
+import MLTextField from './fields/MLTextField.vue'
+import MLMarkdownField from './fields/MLMarkdownField.vue'
 import UnsupportedField from './fields/UnsupportedField.vue'
 import WidgetField from './fields/WidgetField.vue'
 
@@ -60,6 +63,9 @@ const renderers = new Map<string, Component>([
   ['datepicker', DatepickerField],
   ['password', PasswordField],
   ['permissioneditor', PermissionEditorField],
+  ['markdown', MarkdownField],
+  ['mltext', MLTextField],
+  ['mlmarkdown', MLMarkdownField],
 ])
 
 /** Types whose control shows the label itself (toggle cards, relation manager). */
@@ -79,7 +85,7 @@ const valueless = new Set<string>([RELATION_MANAGER, 'widget', 'partial', 'fileu
  * Types whose control is a group rather than one focusable element: the
  * visible label is a span the group points at, not a label for an input.
  */
-const groupLabelledTypes = new Set<string>(['widget', 'partial', 'fileupload', 'permissioneditor'])
+const groupLabelledTypes = new Set<string>(['widget', 'partial', 'fileupload', 'permissioneditor', 'mltext', 'mlmarkdown'])
 
 export function rendererFor(type: string): Component {
   return renderers.get(type) ?? lazyRenderers.get(type)?.() ?? UnsupportedField