feat: implement quiz generation service with topic selection, LLM integration, and question bank management

src/pages/Dashboard.jsx

@@ -178,7 +178,7 @@ const Dashboard = () => {
           <div className="flex justify-between items-start mb-4">
             <div>
               <h3 className="text-xl">Testing</h3>
-              <p className="text-fg-muted text-sm mt-1">Weekly test — 5 questions</p>
+              <p className="text-fg-muted text-sm mt-1">Weekly knowledge test</p>
             </div>
             {testResult ? <Tag variant="success">Score: {testResult.percentage}%</Tag> : <Tag variant="default">To Do</Tag>}
           </div>