fix(graph-pdf-chat): resolution de la propagation des clics sur le graphe et arret du detournement de copie sur le chat PDF

memento-note/components/document-qa-overlay.tsx

@@ -86,7 +86,10 @@ export function DocumentQAOverlay({ attachment, noteId, noteContent, onClose, on
   }
 
   return (
-    <div className="fixed inset-0 z-[100] flex items-center justify-center p-6 bg-black/40 backdrop-blur-sm">
+    <div 
+      onCopy={(e) => e.stopPropagation()}
+      className="fixed inset-0 z-[100] flex items-center justify-center p-6 bg-black/40 backdrop-blur-sm"
+    >
       <div className="w-full max-w-6xl h-[88vh] bg-background border border-border rounded-2xl shadow-2xl flex overflow-hidden">
         {/* Left: PDF Preview */}
         <div className="flex-1 flex flex-col border-r border-border">