Fix: Make right panel scrollable

- Changed Panel overflow from 'hidden' to 'auto'
- Added min-h-0 to enable flex child scrolling
- Added bottom padding (pb-6) for scroll space

frontend/src/components/Panel.tsx

@@ -14,7 +14,7 @@ export function Panel({ title, action, children, className }: PanelProps) {
         <h2 className="text-sm font-semibold text-text-primary">{title}</h2>
         {action}
       </div>
-      <div className="flex-1 p-3 overflow-hidden">{children}</div>
+      <div className="flex-1 p-3 min-h-0 overflow-auto">{children}</div>
     </div>
   );
 }

frontend/src/pages/ClassificationPage.tsx

@@ -335,7 +335,7 @@ export function ClassificationPage({ onFeedbackUpdate }: ClassificationPageProps
           }
           className="flex-1 flex flex-col min-h-0"
         >
-          <div className="flex-1 overflow-y-auto space-y-4">
+          <div className="flex-1 overflow-y-auto space-y-4 pb-6">
             <ResultsCard results={results} isLoading={isLoading} />
             
             {/* Feedback Section */}