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>

modules/cabana/http.go

@@ -709,10 +709,16 @@ func (s *service) formSchema(w http.ResponseWriter, r *http.Request) {
 		}
 		view.Fields = kept
 		view.Assets = s.controllerAssets(cc)
+		if codes := s.enabledContentLocales(r.Context()); len(codes) > 0 {
+			view.Meta.EnabledLocales = append([]string(nil), codes...)
+		}
 		meta := map[string]any{}
 		if view.Meta.Locale != "" {
 			meta["locale"] = view.Meta.Locale
 		}
+		if len(view.Meta.EnabledLocales) > 0 {
+			meta["enabledLocales"] = view.Meta.EnabledLocales
+		}
 		WriteData(w, http.StatusOK, view, meta)
 	})
 }
@@ -939,6 +945,29 @@ func (s *service) crud() (CRUDService, error) {
 	return svc, nil
 }
 
+// enabledContentLocales is TranslationWriter.EnabledLocales after the same
+// Lookup crud() uses. Empty when the adapter is unpublished or the query
+// fails; list schemas never call this.
+func (s *service) enabledContentLocales(ctx context.Context) []string {
+	if s == nil || s.app == nil {
+		return nil
+	}
+	writer, ok := s.app.Lookup[TranslationWriter]()
+	if !ok || writer == nil {
+		return nil
+	}
+	db, err := s.db()
+	if err != nil {
+		return nil
+	}
+	codes, err := writer.EnabledLocales(ctx, db)
+	if err != nil {
+		slog.Error("cabana: enabled locales", "error", err)
+		return nil
+	}
+	return codes
+}
+
 func (s *service) list(w http.ResponseWriter, r *http.Request) {
 	s.protect(w, r, func(cc *CompiledController) {
 		db, err := s.db()