fix(workspace): remove large lock warning banner to eliminate layout shift

frontend/src/features/workspace/WorkspaceView.tsx

@@ -2475,18 +2475,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
                   </div>
                 </div>
 
-                {/* LOCK WARNING BANNER */}
+
-                {isLockedByOther && (
-                  <div className="p-3 bg-amber-500/10 border border-amber-500/30 text-amber-700 dark:text-amber-300 rounded-card flex items-center gap-2.5 text-xs font-medium animate-pulse">
-                    <Lock className="w-4 h-4 text-amber-600 dark:text-amber-400 flex-shrink-0" />
-                    <div>
-                      <div className="font-semibold">Schreibgeschützt</div>
-                      <div>
-                        Wird aktuell bearbeitet von <strong>{activeLock?.userName || 'einem anderen Benutzer'}</strong>. Eingaben sind vorübergehend gesperrt.
-                      </div>
-                    </div>
-                  </div>
-                )}
 
                 {!isLockedByOther && selectedDoc.permission === 'read' && (
                   <div className="p-2.5 bg-blue-500/10 border border-blue-500/30 text-blue-700 dark:text-blue-300 rounded-card flex items-center gap-2 text-xs">