fix(quests): fix island rendering problems on desktop view

src/pages/student/StudentLayout.tsx

@@ -220,7 +220,7 @@ export function StudentLayout() {
 
         <div className="flex flex-col flex-1 min-w-0">
           {/* Extra bottom padding so content clears the floating dock */}
-          <main className="flex-1 pb-24 md:pb-0">
+          <main className="flex-1 md:pb-0">
             <Outlet />
           </main>
         </div>

src/pages/student/practice/Test.tsx

@@ -1684,6 +1684,15 @@ export const Test = () => {
                           </p>
                         </div>
                       )}
+                      {currentQuestion?.context_image_url !== "NULL" && (
+                        <div className="t-card p-6">
+                          <img
+                            src={currentQuestion?.context_image_url}
+                            alt="Context"
+                            className="w-full h-auto"
+                          />
+                        </div>
+                      )}
                       <div className="t-card t-card-purple p-6">
                         <p className="font-bold text-lg text-[#1e1b4b] leading-relaxed">
                           {currentQuestion?.text &&