⚡ Bolt: Optimize debug file filtering in find-files

[piyyy314]

⚡ Bolt Performance Optimization

💡 What

Guarded debug message construction in find() (src/lib/find-files.ts) behind if (debug.enabled) and converted the found array lookup to a Set (foundSet.has(f)).

🎯 Why

Previously, foundAll.filter((f) => !found.includes(f)) ran unconditionally on every file discovery step during project scanning, performing $O(N \cdot M)$ comparisons solely to produce debug logging output.

📊 Impact

• When debug logging is OFF (default): Entirely skips array allocation and $O(N \cdot M)$ iteration on every directory level scanned.
• When debug logging is ON: Reduces lookup complexity from $O(M)$ to $O(1)$ per file, making debug filtering $O(N + M)$ instead of $O(N \cdot M)$.

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PR created automatically by Jules for task 10174549618426875638 started by @piyyy314

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[piyyy314]

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