⚡ Bolt: pre-index search terms in KnowledgeGraph

[hadsern]

💡 What: Pre-indexed search data within a useMemo hook in the KnowledgeGraph component.

🎯 Why: To avoid redundant $O(N)$ string .toLowerCase() operations and conversions on every keystroke when users search the KnowledgeGraph.

📊 Impact: Reduces CPU cycles during filtering by providing pre-computed lowercase IDs/titles and enabling $O(1)$ node lookup via a Map, yielding smoother interactions for large data sets.

🔬 Measurement: Review memory usage and flame charts in DevTools when typing quickly into the graph search. Memory GC pauses and event loop blocking times should decrease compared to re-instantiating lowercase objects on every render iteration.

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PR created automatically by Jules for task 6588641769948131378 started by @hadsern

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