fix(base): isolate inline-embed drags from prosemirror dropcursor

apps/client/src/features/editor/components/base-embed/base-embed-view.tsx

@@ -71,6 +71,34 @@ export function BaseEmbedView({ node }: NodeViewProps) {
     };
   }, [isLoading, isError, pageId]);
 
+  // Isolate the embed's internal drags (column reorder, choice reorder)
+  // from the surrounding ProseMirror editor. Without this, native drag
+  // events bubble up to prosemirror-dropcursor's handleDOMEvents listener,
+  // which then paints its own blue indicator at the embed's node boundary
+  // — visible as a horizontal line above/below the table during a column
+  // drag. Pragmatic-dnd binds its own listeners with `{capture: true}` on
+  // window, so they fire BEFORE bubbling starts; stopping bubble-phase
+  // propagation at the wrapper leaves pragmatic-dnd unaffected while
+  // preventing the editor's listeners from seeing the events.
+  useEffect(() => {
+    const wrapper = wrapperRef.current;
+    if (!wrapper) return;
+    const stop = (e: Event) => e.stopPropagation();
+    const events = [
+      "dragstart",
+      "drag",
+      "dragenter",
+      "dragover",
+      "dragleave",
+      "drop",
+      "dragend",
+    ] as const;
+    for (const type of events) wrapper.addEventListener(type, stop);
+    return () => {
+      for (const type of events) wrapper.removeEventListener(type, stop);
+    };
+  }, []);
+
   let content: React.ReactNode;
   if (pendingKey) {
     // Slash command inserted the embed and is awaiting the server's