⚡ Bolt: Optimize unresolved files sorting performance

[jspann21]

💡 What: Refactored the sortedItems useMemo block in UnresolvedFilesSection.tsx to use the Schwartzian transform (decorate-sort-undecorate).

🎯 Why: The custom sort comparison function was repeatedly calling sanitizeDisplayText and fileExt, meaning expensive operations (like evaluating 3 regexes per string) were executed $O(N \log N)$ times during UI re-renders, causing potential main-thread lag for large paginated sets.

📊 Impact: Reduces sanitizeDisplayText string manipulation evaluations from $O(N \log N)$ back down to exactly $O(N)$, mitigating a hidden React rendering bottleneck.

🔬 Measurement: Local tests and linting check out fine. The pre-computation ensures strings are sanitized exactly once per component lifecycle per item instead of during every single V8 comparison iteration.

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PR created automatically by Jules for task 13962468906903597703 started by @jspann21

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