feat(14.2.1-05): cover mlmarkdown, child adopt, and regen admin artifacts

MLMarkdownField and relation-child forms share the enabled-locale
inject and adopt merge; OpenAPI, types, docs, and boardwalk dist match.

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

admin/src/components/relation/RelationPickerModal.vue

@@ -228,7 +228,7 @@ async function goNext(): Promise<void> {
     return
   }
   step.value = 2
-  pivotValues.value = initialValues(pivotFields.value)
+  pivotValues.value = initialValues(pivotFields.value, [])
   pivotErrors.value = {}
   await nextTick()
   stepTwo.value?.querySelector<HTMLElement>('input, select, textarea, button, [contenteditable="true"]')?.focus()