Schedule search → details links emit ?request= + details page shows leaf breadcrumb (TZ §4.1.2 row 11, §4.1.4 rows 11-13)

src/features/online-board/components/OnlineBoardDetailsPage.tsx

@@ -423,7 +423,7 @@ export const OnlineBoardDetailsPage: FC<OnlineBoardDetailsPageProps> = ({
   // city (the station). We show only that city. See AGENTS.md Conflicts register.
   const detailsCrumbs = useMemo(() => {
     const baseCrumbs = [{ label: t("BOARD.TITLE"), url: `/${locale}/onlineboard` }];
-    if (!parentRequest) return baseCrumbs;
+    if (!parentRequest || parentRequest.area !== "onlineboard") return baseCrumbs;
 
     const backUrl = (() => {
       switch (parentRequest.kind) {
@@ -484,7 +484,7 @@ export const OnlineBoardDetailsPage: FC<OnlineBoardDetailsPageProps> = ({
   }, [parentRequest, locale, t]);
 
   const parentParams = useMemo(() => {
-    if (!parentRequest) return null;
+    if (!parentRequest || parentRequest.area !== "onlineboard") return null;
     const d = parentRequest.date;
     const isoDate = `${d.slice(0, 4)}-${d.slice(4, 6)}-${d.slice(6, 8)}`;
     const dateFrom = `${isoDate}T00:00:00`;

src/features/schedule/components/ScheduleDetailsPage.tsx

@@ -9,8 +9,8 @@
  */
 
 import type { FC } from "react";
-import { useCallback } from "react";
+import { useCallback, useMemo } from "react";
-import { Link } from "@modern-js/runtime/router";
+import { Link, useSearchParams } from "@modern-js/runtime/router";
 import { useTranslation } from "@/i18n/provider.js";
 import { localeToLanguage, normalizeLocaleParam, DEFAULT_LANGUAGE } from "@/i18n/resolver.js";
 import { FlightCard } from "@/ui/flights/FlightCard.js";
@@ -20,6 +20,8 @@ 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 { parseDetailsRequestParam } from "@/shared/detailsRequestParam.js";
+import { buildScheduleUrl } from "../url.js";
 import { useScheduleDetails } from "../hooks/useScheduleDetails.js";
 import { buildScheduleDetailsSeo } from "../seo.js";
 import { buildScheduleFlightJsonLd } from "../json-ld.js";
@@ -83,6 +85,72 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
   const pageTabs = <PageTabs viewType="schedule" />;
   const scheduleHref = `/${locale}/schedule`;
 
+  // Parse ?request= to build the leaf breadcrumb (TZ §4.1.4 Table 7 rows 11-13)
+  const [searchParams] = useSearchParams();
+  const parentRequest = useMemo(() => {
+    const raw = searchParams.get("request");
+    return raw ? parseDetailsRequestParam(raw) : null;
+  }, [searchParams]);
+
+  const breadcrumbs = useMemo(() => {
+    const baseCrumbs = [{ label: t("SCHEDULE.TITLE"), url: scheduleHref }];
+    if (!parentRequest || parentRequest.area !== "schedule") return baseCrumbs;
+
+    // Build the back URL from the parsed request context
+    const backUrl = `/${locale}/${buildScheduleUrl(
+      parentRequest.returnTrip
+        ? {
+            type: "roundtrip",
+            outbound: {
+              departure: parentRequest.departure,
+              arrival: parentRequest.arrival,
+              dateFrom: parentRequest.dateFrom,
+              dateTo: parentRequest.dateTo,
+              ...(parentRequest.timeFrom && parentRequest.timeTo
+                ? { timeFrom: parentRequest.timeFrom, timeTo: parentRequest.timeTo }
+                : {}),
+              ...(parentRequest.connections !== undefined
+                ? { connections: parentRequest.connections }
+                : {}),
+            },
+            inbound: {
+              departure: parentRequest.returnTrip.departure,
+              arrival: parentRequest.returnTrip.arrival,
+              dateFrom: parentRequest.returnTrip.dateFrom,
+              dateTo: parentRequest.returnTrip.dateTo,
+              ...(parentRequest.returnTrip.timeFrom && parentRequest.returnTrip.timeTo
+                ? { timeFrom: parentRequest.returnTrip.timeFrom, timeTo: parentRequest.returnTrip.timeTo }
+                : {}),
+              ...(parentRequest.returnTrip.connections !== undefined
+                ? { connections: parentRequest.returnTrip.connections }
+                : {}),
+            },
+          }
+        : {
+            type: "route",
+            outbound: {
+              departure: parentRequest.departure,
+              arrival: parentRequest.arrival,
+              dateFrom: parentRequest.dateFrom,
+              dateTo: parentRequest.dateTo,
+              ...(parentRequest.timeFrom && parentRequest.timeTo
+                ? { timeFrom: parentRequest.timeFrom, timeTo: parentRequest.timeTo }
+                : {}),
+              ...(parentRequest.connections !== undefined
+                ? { connections: parentRequest.connections }
+                : {}),
+            },
+          },
+    )}`;
+
+    const leafLabel = t("BREADCRUMBS.SCHEDULE-ROUTE", {
+      departureCity: parentRequest.departure,
+      arrivalCity: parentRequest.arrival,
+    });
+
+    return [...baseCrumbs, { label: leafLabel, url: backUrl }];
+  }, [parentRequest, locale, scheduleHref, t]);
+
   // `Купить` button — opens Aeroflot's booking flow in a new tab.
   // Mirrors BoardDetailsHeader's BuyTicketButton / Schedule search page.
   const language =
@@ -128,7 +196,7 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
       <PageLayout
         headerLeft={pageTabs}
         title={<h1 className="text--white page-title">{title}</h1>}
-        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+        breadcrumbs={breadcrumbs}
       >
         <section className="frame">
           <FlightListSkeleton count={flightIds.length} />
@@ -142,7 +210,7 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
       <PageLayout
         headerLeft={pageTabs}
         title={<h1 className="text--white page-title">{title}</h1>}
-        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+        breadcrumbs={breadcrumbs}
       >
         <section className="frame">
           <div
@@ -162,7 +230,7 @@ export const ScheduleDetailsPage: FC<ScheduleDetailsPageProps> = ({
       <PageLayout
         headerLeft={pageTabs}
         title={<h1 className="text--white page-title">{title}</h1>}
-        breadcrumbs={[{ label: t("SCHEDULE.TITLE"), url: scheduleHref }]}
+        breadcrumbs={breadcrumbs}
       >
         <section className="frame">
           <div

src/features/schedule/components/ScheduleSearchPage.tsx

@@ -26,6 +26,7 @@ import { JsonLdRenderer } from "@/shared/seo/json-ld.js";
 import { useScheduleSearch } from "../hooks/useScheduleSearch.js";
 import { buildScheduleUrl } from "../url.js";
 import { buildFlightUrlParams } from "../../online-board/url.js";
+import { buildDetailsRequestParam } from "@/shared/detailsRequestParam.js";
 import { buildScheduleFlightListJsonLd } from "../json-ld.js";
 import type { ScheduleParams } from "../url.js";
 import type { IScheduleSearchRequest, ISimpleFlight } from "../types.js";
@@ -137,9 +138,39 @@ export const ScheduleSearchPage: FC<ScheduleSearchPageProps> = ({ params }) => {
         ...(flight.flightId.suffix ? { suffix: flight.flightId.suffix } : {}),
         date: flight.flightId.date,
       });
-      void navigate(`/${locale}/schedule/${segment}`);
+      const requestParam = buildDetailsRequestParam({
+        area: "schedule",
+        kind: "route",
+        departure: outbound.departure,
+        arrival: outbound.arrival,
+        dateFrom: outbound.dateFrom,
+        dateTo: outbound.dateTo,
+        ...(outbound.timeFrom && outbound.timeTo
+          ? { timeFrom: outbound.timeFrom, timeTo: outbound.timeTo }
+          : {}),
+        ...(outbound.connections !== undefined
+          ? { connections: outbound.connections }
+          : {}),
+        ...(inbound
+          ? {
+              returnTrip: {
+                departure: inbound.departure,
+                arrival: inbound.arrival,
+                dateFrom: inbound.dateFrom,
+                dateTo: inbound.dateTo,
+                ...(inbound.timeFrom && inbound.timeTo
+                  ? { timeFrom: inbound.timeFrom, timeTo: inbound.timeTo }
+                  : {}),
+                ...(inbound.connections !== undefined
+                  ? { connections: inbound.connections }
+                  : {}),
+              },
+            }
+          : {}),
+      });
+      void navigate(`/${locale}/schedule/${segment}?request=${encodeURIComponent(requestParam)}`);
     },
-    [locale, navigate],
+    [locale, navigate, outbound, inbound],
   );
 
   // `Купить` button — opens Aeroflot's booking flow in a new tab, same

src/i18n/locales/de/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/en/common.json

@@ -53,7 +53,8 @@
         "FLIGHT-NUMBER": "Flight: {flightNumber}",
         "DEPARTURE": "Departure: {city}",
         "ARRIVAL": "Arrival: {city}",
-        "ROUTE": "Route: {departureCity}-{arrivalCity}"
+        "ROUTE": "Route: {departureCity}-{arrivalCity}",
+        "SCHEDULE-ROUTE": "{departureCity}-{arrivalCity}"
     },
     "DETAILS": {
         "REGISTRATION": "Check-in",

src/i18n/locales/es/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/fr/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/it/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/ja/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/ko/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }

src/i18n/locales/ru/common.json

@@ -53,7 +53,8 @@
         "FLIGHT-NUMBER": "Номер рейса: {flightNumber}",
         "DEPARTURE": "Вылет: {city}",
         "ARRIVAL": "Прилет: {city}",
-        "ROUTE": "Маршрут: {departureCity}-{arrivalCity}"
+        "ROUTE": "Маршрут: {departureCity}-{arrivalCity}",
+        "SCHEDULE-ROUTE": "{departureCity}-{arrivalCity}"
     },
     "DETAILS": {
         "REGISTRATION": "Регистрация",

src/i18n/locales/zh/common.json

@@ -418,6 +418,7 @@
         "FLIGHT-NUMBER": "",
         "DEPARTURE": "",
         "ARRIVAL": "",
-        "ROUTE": ""
+        "ROUTE": "",
+        "SCHEDULE-ROUTE": ""
     }
 }