fix: handle pasted files in memo editor

Fixes #5568

web/src/components/MemoEditor/components/EditorContent.tsx

@@ -29,8 +29,29 @@ export const EditorContent = forwardRef<EditorRefActions, EditorContentProps>(({
     dispatch(actions.updateContent(content));
   };
 
-  const handlePaste = () => {
-    // Paste handling is managed by the Editor component internally
+  const handlePaste = (event: React.ClipboardEvent<Element>) => {
+    const clipboard = event.clipboardData;
+    if (!clipboard) return;
+
+    const files: File[] = [];
+    if (clipboard.items && clipboard.items.length > 0) {
+      for (const item of Array.from(clipboard.items)) {
+        if (item.kind !== "file") continue;
+        const file = item.getAsFile();
+        if (file) files.push(file);
+      }
+    } else if (clipboard.files && clipboard.files.length > 0) {
+      files.push(...Array.from(clipboard.files));
+    }
+
+    if (files.length === 0) return;
+
+    const localFiles: LocalFile[] = files.map((file) => ({
+      file,
+      previewUrl: createBlobUrl(file),
+    }));
+    localFiles.forEach((localFile) => dispatch(actions.addLocalFile(localFile)));
+    event.preventDefault();
   };
 
   return (