路線選択時に前回の列車種別データが残るバグを修正 (#5352)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: TinyKitten

src/screens/SelectLineScreen.tsx

@@ -562,18 +562,10 @@ const SelectLineScreen = () => {
 
       setIsSelectBoundModalOpen(true);
 
-      const result = await fetchStationsByLineId({
-        variables: { lineId, stationId: lineStationId },
-      });
-      const fetchedStations = result.data?.lineStations ?? [];
-
-      const pendingStation =
-        fetchedStations.find((s) => s.id === lineStationId) ?? null;
-
       setStationState((prev) => ({
         ...prev,
-        pendingStation,
-        pendingStations: fetchedStations,
+        pendingStation: null,
+        pendingStations: [],
         selectedDirection: null,
         wantedDestination: null,
         selectedBound: null,
@@ -589,6 +581,20 @@ const SelectLineScreen = () => {
         pendingTrainType: null,
       }));
 
+      const result = await fetchStationsByLineId({
+        variables: { lineId, stationId: lineStationId },
+      });
+      const fetchedStations = result.data?.lineStations ?? [];
+
+      const pendingStation =
+        fetchedStations.find((s) => s.id === lineStationId) ?? null;
+
+      setStationState((prev) => ({
+        ...prev,
+        pendingStation,
+        pendingStations: fetchedStations,
+      }));
+
       if (line.station?.hasTrainTypes) {
         const result = await fetchTrainTypes({
           variables: {