⚡ Bolt: Optimize HistoryGrouper performance #114
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Refactored `HistoryGrouper.group` to calculate timestamp boundaries for "Today" and "Yesterday" once, replacing the O(N) `Calendar` operations inside the loop with O(1) integer comparisons. This optimization significantly reduces object allocation and CPU usage when processing large history lists, improving scrolling performance and reducing frame drops. Also added `HistoryGrouperTest` to verify correctness.
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💡 What: Optimized
HistoryGrouper.groupto pre-calculate time boundaries.🎯 Why: Using
Calendar.getInstance()andget()inside a loop is expensive (O(N)).📊 Impact: Reduces overhead from calendar operations to simple long comparisons for the majority of items.
🔬 Measurement: Verified with new unit test
HistoryGrouperTest.PR created automatically by Jules for task 15101186595640744584 started by @menny