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⚡ Bolt: Fast O(1) Station Lookup#122

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OsakaLOOP wants to merge 1 commit intobefore-refractorfrom
bolt-optimize-station-lookup-4160852849386718841
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⚡ Bolt: Fast O(1) Station Lookup#122
OsakaLOOP wants to merge 1 commit intobefore-refractorfrom
bolt-optimize-station-lookup-4160852849386718841

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@OsakaLOOP
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💡 What: Added an O(1) memoized station lookup function getStationById to replace expensive Object.values(railwayData).forEach() array searches scattered across rendering components.
🎯 Why: Previously, finding a station's name by its ID to display in a list forced an exhaustive search across thousands of stations, resulting in O(T * N) bottleneck during renders.
📊 Impact: Decreases component render time when displaying trip lists or UI editors containing custom route entries, preventing layout stutters.
🔬 Measurement: Verify via React DevTools Profiler tracing the TripsPage render phase or by confirming the UI no longer lags when loading dozens of saved walk/trip segments.


PR created automatically by Jules for task 4160852849386718841 started by @OsakaLOOP

Replaces expensive O(N) nested iterations across all railway lines and stations with a centralized, memoized `getStationById` function.

Reduces render time significantly for `TripsPage`, `WalkTripEditor`, and `RailRound` lists.

Co-authored-by: OsakaLOOP <68284076+OsakaLOOP@users.noreply.github.com>
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