feat(viz): heap pattern with kth largest

frontend/src/app/patterns/[slug]/page.tsx

@@ -14,7 +14,7 @@ import {
   RelatedPatterns,
 } from "@/components/patterns";
 import { PatternVisualization } from "@/components/visualization";
-import { TwoPointersVisualization, PrefixSumVisualization, LinkedListVisualization, MonotonicStackVisualization, TreeTraversalVisualization, BFSVisualization, DFSVisualization, CoinChangeVisualization } from "@/components/visualizations-new";
+import { TwoPointersVisualization, PrefixSumVisualization, LinkedListVisualization, MonotonicStackVisualization, TreeTraversalVisualization, BFSVisualization, DFSVisualization, CoinChangeVisualization, BacktrackingVisualization, HeapVisualization } from "@/components/visualizations-new";
 import { twoSumAlgorithm } from "@/content/algorithms/two-sum";
 import { slidingWindowAlgorithm } from "@/content/algorithms/sliding-window";
 import { binarySearchAlgorithm } from "@/content/algorithms/binary-search";
@@ -26,6 +26,8 @@ import { treeTraversalAlgorithm } from "@/content/algorithms/tree-traversal";
 import { bfsAlgorithm } from "@/content/algorithms/bfs";
 import { dfsAlgorithm } from "@/content/algorithms/dfs";
 import { coinChangeAlgorithm } from "@/content/algorithms/coin-change";
+import { subsetsAlgorithm } from "@/content/algorithms/subsets";
+import { kthLargestAlgorithm } from "@/content/algorithms/kth-largest";
 
 interface PageProps {
   params: Promise<{ slug: string }>;
@@ -140,6 +142,10 @@ export default async function PatternDetailPage({ params }: PageProps) {
         <DFSVisualization algorithm={dfsAlgorithm} />
       ) : slug === "dynamic-programming" ? (
         <CoinChangeVisualization algorithm={coinChangeAlgorithm} />
+      ) : slug === "backtracking" ? (
+        <BacktrackingVisualization algorithm={subsetsAlgorithm} />
+      ) : slug === "heap" ? (
+        <HeapVisualization algorithm={kthLargestAlgorithm} />
       ) : pattern.visualization_examples && pattern.visualization_examples.length > 0 ? (
         <Card>
           <CardHeader>