Insert Reference panel: one Attach, labelled underlay tools, slide-out with Edit Reference and xref fading

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locales/ru-RU/opencadstudio.ftl

@@ -3508,6 +3508,12 @@ annotate =
     .tolerance-specify-insertion-point = TOLERANCE Укажите точку вставки:
 
 insert =
+    .refui-requires-int-90 = Requires an integer between -90 and 90.
+    .refui-xref-fading = Xref fading
+    .refui-edit-reference = Edit Reference
+    .refui-snap-to-underlays-off = Snap to Underlays OFF
+    .refui-snap-to-underlays-on = Snap to Underlays ON
+    .refui-snap-to-underlays = Snap to Underlays
     .xref-attach-dialog-title = Attach External Reference
     .xref-attach-browse = Browse...
     .xref-attach-reference-type = Reference Type