feat: Implement comprehensive validation system

src/components/moderation/QueueItem.tsx

@@ -40,6 +40,8 @@ interface ModerationItem {
   locked_until?: string;
 }
 
+import { ValidationSummary } from './ValidationSummary';
+
 interface QueueItemProps {
   item: ModerationItem;
   isMobile: boolean;
@@ -152,6 +154,14 @@ export const QueueItem = memo(({
                 Claimed by You
               </Badge>
             )}
+            <ValidationSummary
+              item={{
+                item_type: item.submission_type || 'submission',
+                item_data: item.content,
+                id: item.id,
+              }}
+              compact={true}
+            />
           </div>
           <div className={`flex items-center gap-2 text-muted-foreground ${isMobile ? 'text-xs' : 'text-sm'}`}>
             <Calendar className={isMobile ? "w-3 h-3" : "w-4 h-4"} />