Show answer text for image questions and virtualize question pool

Display the answer field instead of question_content for non-text
questions (image/audio/video) in both the pool and queue panels.
Add @tanstack/react-virtual to virtualize the question pool list
for smooth scrolling with large question banks. Search also matches
against the answer field.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/frontend/package-lock.json

@@ -13,6 +13,7 @@
 				"@dnd-kit/sortable": "^10.0.0",
 				"@dnd-kit/utilities": "^3.2.2",
 				"@fontsource-variable/geist": "^5.2.8",
+				"@tanstack/react-virtual": "^3.13.23",
 				"axios": "^1.13.2",
 				"class-variance-authority": "^0.7.1",
 				"clsx": "^2.1.1",
@@ -2551,6 +2552,33 @@
 				"vite": "^5.2.0 || ^6 || ^7 || ^8"
 			}
 		},
+		"node_modules/@tanstack/react-virtual": {
+			"version": "3.13.23",
+			"resolved": "https://registry.npmjs.org/@tanstack/react-virtual/-/react-virtual-3.13.23.tgz",
+			"integrity": "sha512-XnMRnHQ23piOVj2bzJqHrRrLg4r+F86fuBcwteKfbIjJrtGxb4z7tIvPVAe4B+4UVwo9G4Giuz5fmapcrnZ0OQ==",
+			"license": "MIT",
+			"dependencies": {
+				"@tanstack/virtual-core": "3.13.23"
+			},
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/tannerlinsley"
+			},
+			"peerDependencies": {
+				"react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+				"react-dom": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+			}
+		},
+		"node_modules/@tanstack/virtual-core": {
+			"version": "3.13.23",
+			"resolved": "https://registry.npmjs.org/@tanstack/virtual-core/-/virtual-core-3.13.23.tgz",
+			"integrity": "sha512-zSz2Z2HNyLjCplANTDyl3BcdQJc2k1+yyFoKhNRmCr7V7dY8o8q5m8uFTI1/Pg1kL+Hgrz6u3Xo6eFUB7l66cg==",
+			"license": "MIT",
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/tannerlinsley"
+			}
+		},
 		"node_modules/@ts-morph/common": {
 			"version": "0.27.0",
 			"resolved": "https://registry.npmjs.org/@ts-morph/common/-/common-0.27.0.tgz",

frontend/frontend/package.json

@@ -15,6 +15,7 @@
 		"@dnd-kit/sortable": "^10.0.0",
 		"@dnd-kit/utilities": "^3.2.2",
 		"@fontsource-variable/geist": "^5.2.8",
+		"@tanstack/react-virtual": "^3.13.23",
 		"axios": "^1.13.2",
 		"class-variance-authority": "^0.7.1",
 		"clsx": "^2.1.1",

frontend/frontend/src/components/questionbank/GameSetupView.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, useRef, useMemo } from "react";
+import { useState, useEffect, useRef, useMemo, useCallback } from "react";
 import { Link, useNavigate } from "react-router-dom";
 import {
 	DndContext,
@@ -17,12 +17,12 @@ import {
 	verticalListSortingStrategy,
 } from "@dnd-kit/sortable";
 import { CSS } from "@dnd-kit/utilities";
+import { useVirtualizer } from "@tanstack/react-virtual";
 import { questionsAPI, gamesAPI, teamsAPI } from "../../services/api";
 import AdminNavbar from "../common/AdminNavbar";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Badge } from "@/components/ui/badge";
-import { ScrollArea } from "@/components/ui/scroll-area";
 import {
 	Dialog,
 	DialogContent,
@@ -54,6 +54,7 @@ import {
 interface Question {
 	id: number;
 	question_content: string;
+	answer?: string;
 	type: string;
 	category?: string;
 	[key: string]: unknown;
@@ -65,6 +66,10 @@ interface Template {
 	total_questions: number;
 }
 
+type PoolRow =
+	| { kind: "category"; category: string; count: number; selectedCount: number }
+	| { kind: "question"; question: Question; isSelected: boolean };
+
 /* ─── Sortable row inside the game queue ───────────────────────────── */
 function SortableQuestionRow({
 	question,
@@ -118,7 +123,9 @@ function SortableQuestionRow({
 			)}
 			<TypeIcon type={question.type} />
 			<span className="min-w-0 flex-1 truncate">
-				{question.question_content}
+				{question.type !== "text" && question.answer
+					? question.answer
+					: question.question_content}
 			</span>
 			<button
 				onClick={() => onRemove(question.id)}
@@ -145,6 +152,11 @@ function TypeIcon({ type }: { type: string }) {
 	}
 }
 
+/* ─── Question label helper ────────────────────────────────────────── */
+function questionLabel(q: Question) {
+	return q.type !== "text" && q.answer ? q.answer : q.question_content;
+}
+
 /* ═══════════════════════════════════════════════════════════════════ */
 export default function GameSetupView() {
 	const navigate = useNavigate();
@@ -169,6 +181,8 @@ export default function GameSetupView() {
 	const [showRandomPanel, setShowRandomPanel] = useState(false);
 
 	const teamInputRef = useRef<HTMLInputElement>(null);
+	const poolScrollRef = useRef<HTMLDivElement>(null);
+	const queueScrollRef = useRef<HTMLDivElement>(null);
 
 	/* ─── Load data ────────────────────────────────────────────── */
 	useEffect(() => {
@@ -226,6 +240,8 @@ export default function GameSetupView() {
 			const matched = qs.filter(
 				(question) =>
 					question.question_content.toLowerCase().includes(q) ||
+					(question.answer &&
+						question.answer.toLowerCase().includes(q)) ||
 					cat.toLowerCase().includes(q),
 			);
 			if (matched.length > 0) result[cat] = matched;
@@ -238,6 +254,38 @@ export default function GameSetupView() {
 		[filteredGrouped],
 	);
 
+	/* Flatten categories + questions into a single list for virtualization */
+	const poolRows = useMemo<PoolRow[]>(() => {
+		const rows: PoolRow[] = [];
+		for (const cat of filteredCategoryNames) {
+			const qs = filteredGrouped[cat];
+			const selectedCount = qs.filter((q) =>
+				selectedQuestions.includes(q.id),
+			).length;
+			rows.push({
+				kind: "category",
+				category: cat,
+				count: qs.length,
+				selectedCount,
+			});
+			if (!collapsedCategories.has(cat)) {
+				for (const q of qs) {
+					rows.push({
+						kind: "question",
+						question: q,
+						isSelected: selectedQuestions.includes(q.id),
+					});
+				}
+			}
+		}
+		return rows;
+	}, [
+		filteredCategoryNames,
+		filteredGrouped,
+		collapsedCategories,
+		selectedQuestions,
+	]);
+
 	const selectedQuestionObjects = useMemo(
 		() =>
 			selectedQuestions
@@ -246,6 +294,25 @@ export default function GameSetupView() {
 		[selectedQuestions, questions],
 	);
 
+	/* ─── Pool virtualizer ─────────────────────────────────────── */
+	const poolVirtualizer = useVirtualizer({
+		count: poolRows.length,
+		getScrollElement: () => poolScrollRef.current,
+		estimateSize: useCallback(
+			(index: number) => (poolRows[index]?.kind === "category" ? 32 : 30),
+			[poolRows],
+		),
+		overscan: 20,
+	});
+
+	/* ─── Queue virtualizer ────────────────────────────────────── */
+	const queueVirtualizer = useVirtualizer({
+		count: selectedQuestionObjects.length,
+		getScrollElement: () => queueScrollRef.current,
+		estimateSize: () => 34,
+		overscan: 10,
+	});
+
 	/* ─── Question actions ─────────────────────────────────────── */
 	const addQuestion = (id: number) => {
 		if (!selectedQuestions.includes(id)) {
@@ -327,7 +394,10 @@ export default function GameSetupView() {
 			setRandomSelections({});
 			setShowRandomPanel(false);
 		} catch (error: unknown) {
-			const err = error as { response?: { data?: { error?: string } }; message?: string };
+			const err = error as {
+				response?: { data?: { error?: string } };
+				message?: string;
+			};
 			console.error("Error adding random questions:", error);
 			alert(
 				"Error adding random questions: " +
@@ -418,10 +488,12 @@ export default function GameSetupView() {
 		selectedQuestions.length > 0 &&
 		teams.length > 0;
 
-	/* ─── Checklist counts ─────────────────────────────────────── */
 	const checklistItems = [
 		{ done: gameName.trim() !== "", label: "Name" },
-		{ done: selectedQuestions.length > 0, label: `${selectedQuestions.length} Qs` },
+		{
+			done: selectedQuestions.length > 0,
+			label: `${selectedQuestions.length} Qs`,
+		},
 		{ done: teams.length > 0, label: `${teams.length} teams` },
 	];
 
@@ -470,10 +542,7 @@ export default function GameSetupView() {
 						>
 							<DialogTrigger
 								render={
-									<Button
-										variant="outline"
-										size="sm"
-									/>
+									<Button variant="outline" size="sm" />
 								}
 							>
 								<Bookmark className="size-3.5" />
@@ -485,7 +554,8 @@ export default function GameSetupView() {
 										Load from Template
 									</DialogTitle>
 									<DialogDescription>
-										Pre-fill your game with questions from a saved template.
+										Pre-fill your game with questions from a
+										saved template.
 									</DialogDescription>
 								</DialogHeader>
 								{templates.length === 0 ? (
@@ -542,11 +612,16 @@ export default function GameSetupView() {
 						<div className="flex items-center justify-between border-b px-3 py-2">
 							<h2 className="text-sm font-semibold">
 								Question Pool
+								<span className="ml-1.5 text-xs font-normal text-muted-foreground">
+									{questions.length} total
+								</span>
 							</h2>
 							<div className="flex items-center gap-1">
 								<Button
 									variant={
-										showRandomPanel ? "secondary" : "ghost"
+										showRandomPanel
+											? "secondary"
+											: "ghost"
 									}
 									size="icon-xs"
 									onClick={() =>
@@ -611,8 +686,9 @@ export default function GameSetupView() {
 													min={0}
 													max={total}
 													value={
-														randomSelections[cat] ||
-														0
+														randomSelections[
+															cat
+														] || 0
 													}
 													onChange={(e) =>
 														updateRandomSelection(
@@ -642,120 +718,138 @@ export default function GameSetupView() {
 							</div>
 						)}
 
-						{/* Question list */}
-						<ScrollArea className="h-[28rem] lg:h-[32rem]">
-							<div className="p-2">
-								{questions.length === 0 ? (
-									<p className="py-8 text-center text-sm text-muted-foreground">
-										No questions yet.{" "}
-										<Link
-											to="/questions"
-											className="underline"
-										>
-											Create some
-										</Link>
-									</p>
-								) : filteredCategoryNames.length === 0 ? (
-									<p className="py-8 text-center text-sm text-muted-foreground">
-										No matches for "{searchQuery}"
-									</p>
-								) : (
-									filteredCategoryNames.map((cat) => {
-										const isCollapsed =
-											collapsedCategories.has(cat);
-										const qs = filteredGrouped[cat];
-										const selectedInCat = qs.filter((q) =>
-											selectedQuestions.includes(q.id),
-										).length;
-										return (
-											<div key={cat} className="mb-1">
-												<button
-													onClick={() =>
-														toggleCategory(cat)
-													}
-													className="flex w-full items-center gap-1 rounded-md px-2 py-1.5 text-left text-xs font-semibold text-muted-foreground hover:bg-muted"
-												>
-													{isCollapsed ? (
-														<ChevronRight className="size-3" />
-													) : (
-														<ChevronDown className="size-3" />
-													)}
-													<span className="flex-1">
-														{cat}
-													</span>
-													{selectedInCat > 0 && (
-														<Badge
-															variant="secondary"
-															className="text-[0.6rem]"
+						{/* Virtualized question list */}
+						<div
+							ref={poolScrollRef}
+							className="h-[28rem] overflow-auto lg:h-[32rem]"
+						>
+							{questions.length === 0 ? (
+								<p className="py-8 text-center text-sm text-muted-foreground">
+									No questions yet.{" "}
+									<Link
+										to="/questions"
+										className="underline"
+									>
+										Create some
+									</Link>
+								</p>
+							) : filteredCategoryNames.length === 0 ? (
+								<p className="py-8 text-center text-sm text-muted-foreground">
+									No matches for &ldquo;{searchQuery}&rdquo;
+								</p>
+							) : (
+								<div
+									style={{
+										height: poolVirtualizer.getTotalSize(),
+										position: "relative",
+									}}
+								>
+									{poolVirtualizer
+										.getVirtualItems()
+										.map((virtualRow) => {
+											const row =
+												poolRows[virtualRow.index];
+											if (row.kind === "category") {
+												return (
+													<div
+														key={`cat-${row.category}`}
+														className="absolute left-0 w-full px-2"
+														style={{
+															top: virtualRow.start,
+															height: virtualRow.size,
+														}}
+													>
+														<button
+															onClick={() =>
+																toggleCategory(
+																	row.category,
+																)
+															}
+															className="flex w-full items-center gap-1 rounded-md px-2 py-1.5 text-left text-xs font-semibold text-muted-foreground hover:bg-muted"
 														>
-															{selectedInCat}
-														</Badge>
-													)}
-													<span className="text-[0.65rem] text-muted-foreground">
-														{qs.length}
-													</span>
-												</button>
-												{!isCollapsed && (
-													<div className="ml-1 grid gap-0.5 py-0.5">
-														{qs.map((q) => {
-															const isSelected =
-																selectedQuestions.includes(
-																	q.id,
-																);
-															return (
-																<button
-																	key={q.id}
-																	onClick={() =>
-																		isSelected
-																			? removeQuestion(
-																					q.id,
-																				)
-																			: addQuestion(
-																					q.id,
-																				)
-																	}
-																	className={cn(
-																		"flex items-center gap-2 rounded-md px-2 py-1.5 text-left text-xs transition-colors",
-																		isSelected
-																			? "bg-emerald-50 text-emerald-900 dark:bg-emerald-950/30 dark:text-emerald-100"
-																			: "hover:bg-muted",
-																	)}
+															{collapsedCategories.has(
+																row.category,
+															) ? (
+																<ChevronRight className="size-3" />
+															) : (
+																<ChevronDown className="size-3" />
+															)}
+															<span className="flex-1">
+																{row.category}
+															</span>
+															{row.selectedCount >
+																0 && (
+																<Badge
+																	variant="secondary"
+																	className="text-[0.6rem]"
 																>
-																	<span
-																		className={cn(
-																			"flex size-3.5 shrink-0 items-center justify-center rounded border text-[0.5rem]",
-																			isSelected
-																				? "border-emerald-500 bg-emerald-500 text-white"
-																				: "border-muted-foreground/30",
-																		)}
-																	>
-																		{isSelected &&
-																			"✓"}
-																	</span>
-																	<TypeIcon
-																		type={
-																			q.type
-																		}
-																	/>
-																	<span className="min-w-0 flex-1 truncate">
-																		{
-																			q.question_content
-																		}
-																	</span>
-																	{!isSelected && (
-																		<Plus className="size-3 shrink-0 text-muted-foreground opacity-0 transition-opacity group-hover:opacity-100" />
-																	)}
-																</button>
-															);
-														})}
+																	{
+																		row.selectedCount
+																	}
+																</Badge>
+															)}
+															<span className="text-[0.65rem] text-muted-foreground">
+																{row.count}
+															</span>
+														</button>
 													</div>
-												)}
-											</div>
-										);
-									})
-								)}
-							</div>
-						</ScrollArea>
+												);
+											}
+											const { question, isSelected } =
+												row;
+											return (
+												<div
+													key={`q-${question.id}`}
+													className="absolute left-0 w-full px-2 pl-3"
+													style={{
+														top: virtualRow.start,
+														height: virtualRow.size,
+													}}
+												>
+													<button
+														onClick={() =>
+															isSelected
+																? removeQuestion(
+																		question.id,
+																	)
+																: addQuestion(
+																		question.id,
+																	)
+														}
+														className={cn(
+															"flex w-full items-center gap-2 rounded-md px-2 py-1.5 text-left text-xs transition-colors",
+															isSelected
+																? "bg-emerald-50 text-emerald-900 dark:bg-emerald-950/30 dark:text-emerald-100"
+																: "hover:bg-muted",
+														)}
+													>
+														<span
+															className={cn(
+																"flex size-3.5 shrink-0 items-center justify-center rounded border text-[0.5rem]",
+																isSelected
+																	? "border-emerald-500 bg-emerald-500 text-white"
+																	: "border-muted-foreground/30",
+															)}
+														>
+															{isSelected && "✓"}
+														</span>
+														<TypeIcon
+															type={
+																question.type
+															}
+														/>
+														<span className="min-w-0 flex-1 truncate">
+															{questionLabel(
+																question,
+															)}
+														</span>
+													</button>
+												</div>
+											);
+										})}
+								</div>
+							)}
+						</div>
 					</div>
 
 					{/* RIGHT: Game Queue */}
@@ -766,8 +860,7 @@ export default function GameSetupView() {
 								{selectedQuestions.length > 0 && (
 									<span className="ml-1.5 text-xs font-normal text-muted-foreground">
 										{selectedQuestions.length} question
-										{selectedQuestions.length !== 1 &&
-											"s"}
+										{selectedQuestions.length !== 1 && "s"}
 									</span>
 								)}
 							</h2>
@@ -783,7 +876,10 @@ export default function GameSetupView() {
 							)}
 						</div>
 
-						<ScrollArea className="h-[28rem] lg:h-[32rem]">
+						<div
+							ref={queueScrollRef}
+							className="h-[28rem] overflow-auto lg:h-[32rem]"
+						>
 							{selectedQuestions.length === 0 ? (
 								<div className="flex h-full flex-col items-center justify-center gap-2 p-8 text-center">
 									<div className="rounded-full bg-muted p-3">
@@ -824,7 +920,7 @@ export default function GameSetupView() {
 									</SortableContext>
 								</DndContext>
 							)}
-						</ScrollArea>
+						</div>
 					</div>
 				</div>
 
@@ -834,7 +930,10 @@ export default function GameSetupView() {
 						<Users className="size-4 text-muted-foreground" />
 						<h2 className="text-sm font-semibold">Teams</h2>
 						{teams.length > 0 && (
-							<Badge variant="secondary" className="text-[0.65rem]">
+							<Badge
+								variant="secondary"
+								className="text-[0.65rem]"
+							>
 								{teams.length}
 							</Badge>
 						)}