* The project successfully isolates recursive tree manipulation logic within the custom `useNode` hook, excellently demonstrating DSA importance in frontend engineering. * To enhance stability, refactor all data operations to ensure strict immutability, eliminating direct object mutation within the helper functions. * Adopt a robust global ID generation strategy (e.g., UUIDs) for comments, as the current `commentId + 1` logic is fundamentally flawed for dynamic structures. * Simplify recursive deletion logic; standard functional filtering patterns provide superior state immutability compared to in-place array splicing.
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