⚡ Bolt: Optimize iteration over railwayData

src/components/modals/GlobalSearchModal.tsx

@@ -36,7 +36,12 @@ export const GlobalSearchModal: React.FC<Props> = ({ isOpen, onClose, onSelect }
         const matchedLines: any[] = [];
         const matchedStations: any[] = [];
 
-        Object.entries(railwayData).forEach(([lineKey, lineData]) => {
+        // ⚡ Bolt Optimization: Prevent creating a large array via Object.entries()
+        // on every keystroke by using a manual single-pass for...in loop.
+        for (const lineKey in railwayData) {
+            if (!Object.prototype.hasOwnProperty.call(railwayData, lineKey)) continue;
+            const lineData = railwayData[lineKey];
+
             const displayName = lineKey.includes(':') ? lineKey.split(':').slice(1).join(':') : lineKey;
 
             // Check line match
@@ -64,7 +69,7 @@ export const GlobalSearchModal: React.FC<Props> = ({ isOpen, onClose, onSelect }
                     });
                 }
             });
-        });
+        }
 
         // (the code up there already populated `matchedLines` and `matchedStations` so no need to do performSearch here)
         return {

src/components/modals/WalkTripEditor.tsx

@@ -79,12 +79,33 @@ export const WalkTripEditor: React.FC = () => {
             // Find coordinates for the Bezier curve
             let startCoords = null;
             let endCoords = null;
-            Object.values(railwayData).forEach(line => {
-                const s = line.stations.find(st => st.id === form.fromId);
-                if (s) startCoords = [s.lng, s.lat];
-                const e = line.stations.find(st => st.id === form.toId);
-                if (e) endCoords = [e.lng, e.lat];
-            });
+            let foundStart = false;
+            let foundEnd = false;
+
+            // ⚡ Bolt Optimization: Replace Object.values().forEach with a single-pass
+            // for...in loop and early break to prevent large temporary array allocations
+            for (const lineKey in railwayData) {
+                if (!Object.prototype.hasOwnProperty.call(railwayData, lineKey)) continue;
+                const line = railwayData[lineKey];
+
+                if (!foundStart) {
+                    const s = line.stations.find(st => st.id === form.fromId);
+                    if (s) {
+                        startCoords = [s.lng, s.lat];
+                        foundStart = true;
+                    }
+                }
+
+                if (!foundEnd) {
+                    const e = line.stations.find(st => st.id === form.toId);
+                    if (e) {
+                        endCoords = [e.lng, e.lat];
+                        foundEnd = true;
+                    }
+                }
+
+                if (foundStart && foundEnd) break;
+            }
 
             if (startCoords && endCoords) {
                 walkPath = generateBezierPath(startCoords as [number, number], endCoords as [number, number]);
@@ -127,12 +148,33 @@ export const WalkTripEditor: React.FC = () => {
     // Resolving station names for read-only display
     let startName = "未知起点";
     let endName = "未知终点";
-    Object.values(railwayData).forEach(line => {
-        const s = line.stations.find(st => st.id === form.fromId);
-        if (s) startName = s.name_ja;
-        const e = line.stations.find(st => st.id === form.toId);
-        if (e) endName = e.name_ja;
-    });
+    let foundStartName = false;
+    let foundEndName = false;
+
+    // ⚡ Bolt Optimization: Replace Object.values().forEach with a single-pass
+    // for...in loop and early break to prevent large temporary array allocations
+    for (const lineKey in railwayData) {
+        if (!Object.prototype.hasOwnProperty.call(railwayData, lineKey)) continue;
+        const line = railwayData[lineKey];
+
+        if (!foundStartName) {
+            const s = line.stations.find(st => st.id === form.fromId);
+            if (s) {
+                startName = s.name_ja;
+                foundStartName = true;
+            }
+        }
+
+        if (!foundEndName) {
+            const e = line.stations.find(st => st.id === form.toId);
+            if (e) {
+                endName = e.name_ja;
+                foundEndName = true;
+            }
+        }
+
+        if (foundStartName && foundEndName) break;
+    }
 
     const isTree = form.walkType === 'tree';
 

src/pages/TripsPage.tsx

@@ -77,6 +77,21 @@ export const TripsPage: React.FC = () => {
         folders: state.folders,
         badgeSettings: state.badgeSettings
     })));
+
+    // ⚡ Bolt Optimization: Build a single O(N) map of station IDs to names
+    // instead of repeatedly looping through all railway lines for every walk trip.
+    // This reduces the complexity from O(Trips * Lines * Stations) to O(1) per lookup.
+    const stationNameMap = useMemo(() => {
+        const map = new Map<string, string>();
+        for (const lineKey in railwayData) {
+            if (Object.prototype.hasOwnProperty.call(railwayData, lineKey)) {
+                railwayData[lineKey].stations.forEach(st => {
+                    map.set(st.id, st.name_ja);
+                });
+            }
+        }
+        return map;
+    }, [railwayData]);
     const setModalState = useStore(state => state.setModalState);
     const startEditingTrip = useStore(state => state.startEditingTrip);
     const removeTrip = useStore(state => state.removeTrip);
@@ -157,14 +172,9 @@ export const TripsPage: React.FC = () => {
                     const isWalk = t.isWalk;
 
                     if (isWalk) {
-                        let startName = t.fromId || '';
-                        let endName = t.toId || '';
-                        Object.values(railwayData).forEach(line => {
-                            const s = line.stations.find(st => st.id === t.fromId);
-                            if (s) startName = s.name_ja;
-                            const e = line.stations.find(st => st.id === t.toId);
-                            if (e) endName = e.name_ja;
-                        });
+                        // ⚡ Bolt Optimization: O(1) hash map lookup replacing nested loops
+                        const startName = stationNameMap.get(t.fromId) || t.fromId || '';
+                        const endName = stationNameMap.get(t.toId) || t.toId || '';
 
                         const isTree = t.walkType === 'tree';
                         const cls = {