Wrap ScheduleDetailsPage in PageLayout + frame

The schedule-details view rendered bare content on the blue background
with no PageLayout, no PageTabs, no breadcrumbs, no white card — so
the flight-number heading, leg list and skeletons were invisible
against the page background. Wrap the component in PageLayout with
the schedule tab + breadcrumb + 'Информация о рейсе: SU 6805' title,
and put each branch inside a <section class='frame'> (error,
not-found, empty, success) so it sits on the same white card as the
board pages.

Also fix the same React key warning the board page had: the leg map
used leg.index as the key, which is undefined for Direct flights.
Fall back to the array index.

src/features/schedule/components/ScheduleDetailsPage.tsx

@@ -13,6 +13,8 @@ import { useTranslation } from "@/i18n/provider.js";
 import { FlightCard } from "@/ui/flights/FlightCard.js";
 import { FlightListSkeleton } from "@/ui/flights/FlightListSkeleton.js";
 import { SeoHead } from "@/ui/seo/SeoHead.js";
+import { PageLayout } from "@/ui/layout/PageLayout.js";
+import { PageTabs } from "@/ui/layout/PageTabs.js";
 import { JsonLdRenderer } from "@/shared/seo/json-ld.js";
 import { useScheduleDetails } from "../hooks/useScheduleDetails.js";
 import { buildScheduleDetailsSeo } from "../seo.js";
@@ -69,23 +71,55 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
 
   const { flights, loading, error } = useScheduleDetails(detailsParams);
 
+  const pageTabs = <PageTabs viewType="schedule" />;
+  const scheduleHref = `/${locale}/schedule`;
+  const title = flightIds[0]
+    ? `${t("BOARD.FLIGHT-INFO")}: ${flightIds[0].carrier} ${flightIds[0].flightNumber}`
+    : t("SCHEDULE.TITLE");
+
   if (loading) {
-    return <FlightListSkeleton count={flightIds.length} />;
+    return (
+      <PageLayout
+        headerLeft={pageTabs}
+        title={<h1 className="text--white page-title">{title}</h1>}
+        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+      >
+        <section className="frame">
+          <FlightListSkeleton count={flightIds.length} />
+        </section>
+      </PageLayout>
+    );
   }
 
   if (error) {
     return (
-      <div className="schedule-details schedule-details--error" data-testid="schedule-details-error">
-        <p>{t("BOARD.LOAD-FAILED")}</p>
-      </div>
+      <PageLayout
+        headerLeft={pageTabs}
+        title={<h1 className="text--white page-title">{title}</h1>}
+        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+      >
+        <section className="frame">
+          <div className="schedule-details schedule-details--error" data-testid="schedule-details-error">
+            <p>{t("BOARD.LOAD-FAILED")}</p>
+          </div>
+        </section>
+      </PageLayout>
     );
   }
 
   if (flights.length === 0) {
     return (
-      <div className="schedule-details schedule-details--not-found" data-testid="schedule-details-not-found">
-        <p>{t("BOARD.FLIGHT-NOT-FOUND")}</p>
-      </div>
+      <PageLayout
+        headerLeft={pageTabs}
+        title={<h1 className="text--white page-title">{title}</h1>}
+        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+      >
+        <section className="frame">
+          <div className="schedule-details schedule-details--not-found" data-testid="schedule-details-not-found">
+            <p>{t("BOARD.FLIGHT-NOT-FOUND")}</p>
+          </div>
+        </section>
+      </PageLayout>
     );
   }
 
@@ -93,47 +127,54 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
   const seoProps = buildScheduleDetailsSeo(t, flights, locale, canonicalOrigin, flightIds);
 
   return (
-    <div className="schedule-details" data-testid="schedule-details">
+    <PageLayout
+      headerLeft={pageTabs}
+      title={<h1 className="text--white page-title">{title}</h1>}
+      breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+    >
       <SeoHead {...seoProps} />
+      <section className="frame">
+        <div className="schedule-details" data-testid="schedule-details">
+          {flights.map((flight) => {
+            const jsonLd = buildScheduleFlightJsonLd(flight);
+            const legs = getLegs(flight);
+            const flightNumber = `${flight.flightId.carrier} ${flight.flightId.flightNumber}`;
 
-      {flights.map((flight) => {
-        const jsonLd = buildScheduleFlightJsonLd(flight);
-        const legs = getLegs(flight);
-        const flightNumber = `${flight.flightId.carrier} ${flight.flightId.flightNumber}`;
+            return (
+              <div key={flight.id} className="schedule-details__flight" data-testid={`flight-${flight.id}`}>
+                <JsonLdRenderer data={jsonLd} />
 
-        return (
-          <div key={flight.id} className="schedule-details__flight" data-testid={`flight-${flight.id}`}>
-            <JsonLdRenderer data={jsonLd} />
-
-            <div className="schedule-details__header">
-              <h2 className="schedule-details__flight-number">{flightNumber}</h2>
-              <span className="schedule-details__status">{flight.status}</span>
-            </div>
-
-            <FlightCard flight={flight} />
-
-            {legs.map((leg) => (
-              <div key={leg.index} className="schedule-details__leg" data-testid={`leg-${leg.index}`}>
-                <div className="schedule-details__leg-route">
-                  <span>{leg.departure.scheduled.airportCode}</span>
-                  <span>&rarr;</span>
-                  <span>{leg.arrival.scheduled.airportCode}</span>
+                <div className="schedule-details__header">
+                  <h2 className="schedule-details__flight-number">{flightNumber}</h2>
+                  <span className="schedule-details__status">{flight.status}</span>
                 </div>
-                <div className="schedule-details__leg-times">
-                  <span>{leg.departure.times.scheduledDeparture.localTime}</span>
-                  <span> - </span>
-                  <span>{leg.arrival.times.scheduledArrival.localTime}</span>
-                </div>
-                {leg.equipment.name && (
-                  <div className="schedule-details__aircraft">
-                    {leg.equipment.name}
+
+                <FlightCard flight={flight} />
+
+                {legs.map((leg, i) => (
+                  <div key={`leg-${leg.index ?? i}`} className="schedule-details__leg" data-testid={`leg-${leg.index ?? i}`}>
+                    <div className="schedule-details__leg-route">
+                      <span>{leg.departure.scheduled.airportCode}</span>
+                      <span>&rarr;</span>
+                      <span>{leg.arrival.scheduled.airportCode}</span>
+                    </div>
+                    <div className="schedule-details__leg-times">
+                      <span>{leg.departure.times.scheduledDeparture.localTime}</span>
+                      <span> - </span>
+                      <span>{leg.arrival.times.scheduledArrival.localTime}</span>
+                    </div>
+                    {leg.equipment.name && (
+                      <div className="schedule-details__aircraft">
+                        {leg.equipment.name}
+                      </div>
+                    )}
                   </div>
-                )}
+                ))}
               </div>
-            ))}
-          </div>
-        );
-      })}
-    </div>
+            );
+          })}
+        </div>
+      </section>
+    </PageLayout>
   );
 };