Add filter sidebar to schedule search

Schedule results previously had nothing in the left rail. Angular fills
it with the route filter + search history. Reuse the OnlineBoardFilter
component pre-populated with current URL params plus SearchHistory
below it, so the layout matches the board pages.

src/features/schedule/components/ScheduleSearchPage.tsx

@@ -16,6 +16,8 @@ import { FlightList } from "@/ui/flights/FlightList.js";
 import { PageLayout } from "@/ui/layout/PageLayout.js";
 import { PageTabs } from "@/ui/layout/PageTabs.js";
 import { DayTabs } from "@/features/online-board/components/DayTabs/index.js";
+import { OnlineBoardFilter } from "@/features/online-board/components/OnlineBoardFilter.js";
+import { SearchHistory } from "@/ui/layout/SearchHistory.js";
 import { useDictionaries } from "@/shared/dictionaries/index.js";
 import "./ScheduleSearchPage.scss";
 import { JsonLdRenderer } from "@/shared/seo/json-ld.js";
@@ -162,6 +164,17 @@ export const ScheduleSearchPage: FC<ScheduleSearchPageProps> = ({ params }) => {
           { label: t("SCHEDULE.TITLE"), url: `/${lang}/schedule` },
           { label: routeHeading },
         ]}
+        contentLeft={
+          <>
+            <OnlineBoardFilter
+              initialTab="route"
+              initialDeparture={outbound.departure}
+              initialArrival={outbound.arrival}
+              initialDate={outbound.dateFrom}
+            />
+            <SearchHistory />
+          </>
+        }
         stickyContent={
           <DayTabs
             selectedDate={outbound.dateFrom}