feat(viz): heap pattern with kth largest

frontend/src/components/visualizations-new/index.ts

@@ -15,6 +15,8 @@ export { StackElement } from "./primitives/stack-element";
 export { QueueElement } from "./primitives/queue-element";
 export { TreeNode } from "./primitives/tree-node";
 export { GridCell } from "./primitives/grid-cell";
+export { DecisionNode } from "./primitives/decision-node";
+export { HeapNode } from "./primitives/heap-node";
 
 // Data structures
 export { ArrayView } from "./data-structures/array-view";
@@ -23,6 +25,8 @@ export { StackView } from "./data-structures/stack-view";
 export { QueueView } from "./data-structures/queue-view";
 export { BinaryTreeView } from "./data-structures/binary-tree-view";
 export { GridView } from "./data-structures/grid-view";
+export { DecisionTreeView } from "./data-structures/decision-tree-view";
+export { HeapView } from "./data-structures/heap-view";
 
 // Algorithm visualizations
 export { MonotonicStackVisualization } from "./algorithms/monotonic-stack";
@@ -33,3 +37,5 @@ export { DFSVisualization } from "./algorithms/dfs";
 export { TwoPointersVisualization } from "./algorithms/two-pointers";
 export { LinkedListVisualization } from "./algorithms/linked-list";
 export { CoinChangeVisualization } from "./algorithms/coin-change";
+export { BacktrackingVisualization } from "./algorithms/backtracking";
+export { HeapVisualization } from "./algorithms/heap";