DayGroupedFlightList: auto-expand first flight of today's group (Angular expandDefaultFlight parity)

src/features/schedule/components/DayGroupedFlightList.tsx

@@ -157,6 +157,19 @@ export const DayGroupedFlightList: FC<DayGroupedFlightListProps> = ({
     setAutoOpenedFor(todayIso);
   }, [groups, autoOpenedFor]);
 
+  // Mirror Angular `ScheduleDaysComponent.expandDefaultFlight`: once a
+  // day group auto-expands, the first flight inside it should also
+  // expand. Only fills in when the caller didn't pass an explicit
+  // initialCurrentFlightId — that props value wins for deep links to a
+  // specific flight.
+  const autoInitialFlightId = useMemo(() => {
+    if (initialCurrentFlightId) return undefined;
+    if (!autoOpenedFor) return undefined;
+    const group = groups.find((g) => g.date === autoOpenedFor);
+    return group?.flights[0]?.id;
+  }, [initialCurrentFlightId, autoOpenedFor, groups]);
+  const resolvedInitialFlightId = initialCurrentFlightId ?? autoInitialFlightId;
+
   const setSort = (mode: SortMode) => {
     setSortMode((cur) => (cur === mode ? "none" : mode));
   };
@@ -245,7 +258,9 @@ export const DayGroupedFlightList: FC<DayGroupedFlightListProps> = ({
           direction="schedule"
           renderExpandedBody={renderScheduleBody}
           {...(onFlightClick ? { onFlightClick } : {})}
-          {...(initialCurrentFlightId ? { initialCurrentFlightId } : {})}
+          {...(resolvedInitialFlightId
+            ? { initialCurrentFlightId: resolvedInitialFlightId }
+            : {})}
         />
       </div>
     );
@@ -318,8 +333,8 @@ export const DayGroupedFlightList: FC<DayGroupedFlightListProps> = ({
                 direction="schedule"
                 renderExpandedBody={renderScheduleBody}
                 {...(onFlightClick ? { onFlightClick } : {})}
-                {...(initialCurrentFlightId
-                  ? { initialCurrentFlightId }
+                {...(resolvedInitialFlightId
+                  ? { initialCurrentFlightId: resolvedInitialFlightId }
                   : {})}
               />
             )}