feat(viz): tree/BFS/DFS patterns

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

@@ -12,14 +12,21 @@ export { CalculationBubble } from "./primitives/calculation-bubble";
 export { LinkedListNode } from "./primitives/linked-list-node";
 export { LinkedListPointer } from "./primitives/linked-list-pointer";
 export { StackElement } from "./primitives/stack-element";
+export { QueueElement } from "./primitives/queue-element";
+export { TreeNode } from "./primitives/tree-node";
 
 // Data structures
 export { ArrayView } from "./data-structures/array-view";
 export { LinkedListView } from "./data-structures/linked-list-view";
 export { StackView } from "./data-structures/stack-view";
+export { QueueView } from "./data-structures/queue-view";
+export { BinaryTreeView } from "./data-structures/binary-tree-view";
 
 // Algorithm visualizations
 export { MonotonicStackVisualization } from "./algorithms/monotonic-stack";
 export { PrefixSumVisualization } from "./algorithms/prefix-sum";
+export { TreeTraversalVisualization } from "./algorithms/tree-traversal";
+export { BFSVisualization } from "./algorithms/bfs";
+export { DFSVisualization } from "./algorithms/dfs";
 export { TwoPointersVisualization } from "./algorithms/two-pointers";
 export { LinkedListVisualization } from "./algorithms/linked-list";