Fix Schedule UI regressions and complete non-RU/EN locale translations

- Duration now sums segments + transfers (last arrival − first departure)
  for multi-leg/connecting in Schedule, matching TZ §4.1.14.3 and Angular.
- Default day auto-expands per TZ §4.1.14: current-week today, future-week
  first valid day, last-valid-day fallback when earlier days are out of
  window.
- Aircraft model no longer leaks into collapsed rows; shown only when
  expanded AND direct, mirroring Angular's
  operator-logo-and-model [showModel]="expanded && direct".
- Week tabs use MONTH-SHORT.* translation table so Russian renders
  "27 апр. - 3 май." instead of genitive "мая" from Intl.
- "Ранее искали" → "Вы искали" across all 9 locales (TZ §4.1.9.5).
- Sort-arrow headers compacted (inline-flex nowrap, zero gap) so labels
  stay on one line next to the chevrons.
- robots.txt allows Yandex/Googlebot/* with no Disallow (TZ §4.1.20).
- 6 non-RU/EN locales (de/es/fr/it/ja/ko) + zh were missing ~45 strings
  each; translated from Angular where present, hand-translated otherwise
  so every locale is down to the two intentional `.undefined` stubs.

src/features/schedule/components/DayGroupedFlightList.scss

@@ -34,22 +34,27 @@
     display: inline-flex;
     align-items: center;
     gap: 6px;
+    white-space: nowrap;
   }
 
   &__sort-group {
     display: inline-flex;
     flex-direction: column;
-    gap: 1px;
+    gap: 0;
+    line-height: 0;
   }
 
   &__sort {
     background: transparent;
     border: 0;
-    padding: 1px 2px;
+    padding: 0;
     cursor: pointer;
     color: colors.$border-blue;
     line-height: 0;
     border-radius: 2px;
+    display: block;
+
+    svg { display: block; }
 
     &:hover { color: colors.$blue; }
     &--active { color: colors.$blue; }

src/features/schedule/components/DayGroupedFlightList.tsx

@@ -143,21 +143,25 @@ export const DayGroupedFlightList: FC<DayGroupedFlightListProps> = ({
     return g.map((day) => ({ ...day, flights: sortFlights(day.flights, sortMode) }));
   }, [flights, sortMode]);
 
-  // Auto-open today's day group on first render (and when the visible
-  // window shifts). The user can collapse it; we never re-open after
+  // Auto-open the default day per TZ §4.1.14: current week expands today;
+  // future weeks expand the first valid day (week where only Sunday is
+  // valid → Sunday). The user can collapse it; we never re-open after
   // that for the same date.
   const [autoOpenedFor, setAutoOpenedFor] = useState<string | null>(null);
   useEffect(() => {
+    if (groups.length === 0) return;
     const now = new Date();
     const todayIso = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, "0")}-${String(now.getDate()).padStart(2, "0")}`;
-    const todayInScope = groups.some((g) => g.date === todayIso);
-    if (!todayInScope || autoOpenedFor === todayIso) return;
+    const defaultDate = groups.some((g) => g.date === todayIso)
+      ? todayIso
+      : (groups[0]?.date ?? null);
+    if (!defaultDate || autoOpenedFor === defaultDate) return;
     setExpandedDays((prev) => {
       const next = new Set(prev);
-      next.add(todayIso);
+      next.add(defaultDate);
       return next;
     });
-    setAutoOpenedFor(todayIso);
+    setAutoOpenedFor(defaultDate);
   }, [groups, autoOpenedFor]);
 
   // Mirror Angular `ScheduleDaysComponent.expandDefaultFlight`: once a

src/features/schedule/components/WeekTabs.tsx

@@ -15,8 +15,7 @@
  * - Clicking a tab auto-scrolls (page jumps) to show the selected week.
  */
 
-import { type FC, useEffect, useMemo, useState } from "react";
-import { useLocale } from "@/i18n/useLocale.js";
+import { type FC, useCallback, useEffect, useMemo, useState } from "react";
 import { useTranslation } from "@/i18n/provider.js";
 import { scheduleWindowBounds } from "@/shared/dateWindow.js";
 import "./WeekTabs.scss";
@@ -46,10 +45,6 @@ function startOfWeekMonday(d: Date): Date {
   return out;
 }
 
-function fmt(date: Date, fmt: Intl.DateTimeFormat): string {
-  return fmt.format(date).replace(/\.$/, "");
-}
-
 function ymd(d: Date): string {
   const y = d.getFullYear();
   const m = String(d.getMonth() + 1).padStart(2, "0");
@@ -58,14 +53,13 @@ function ymd(d: Date): string {
 }
 
 export const WeekTabs: FC<WeekTabsProps> = ({ selectedMonday, onNavigate }) => {
-  const { language } = useLocale();
   const { t } = useTranslation();
-  // Angular shows month abbreviated ("13 апр - 19 апр"). Build once
-  // per locale; the month part comes through in the locale's natural
-  // short form.
-  const dayMonthFmt = useMemo(
-    () => new Intl.DateTimeFormat(language, { day: "numeric", month: "short" }),
-    [language],
+  // Short month abbreviations come from `MONTH-SHORT.{1..12}`, same
+  // lookup table as Angular's `DatesTranslationService.getShortDateString`
+  // ("27 апр." / "3 май." for ru; "Apr" / "May" for en).
+  const shortDay = useCallback(
+    (d: Date) => `${d.getDate()} ${t(`MONTH-SHORT.${d.getMonth() + 1}`)}`,
+    [t],
   );
 
   // Build the active weeks list anchored to the schedule window
@@ -86,11 +80,11 @@ export const WeekTabs: FC<WeekTabsProps> = ({ selectedMonday, onNavigate }) => {
         monday,
         sunday,
         ymd: ymd(monday),
-        label: `${fmt(monday, dayMonthFmt)} - ${fmt(sunday, dayMonthFmt)}`,
+        label: `${shortDay(monday)} - ${shortDay(sunday)}`,
       });
     }
     return out;
-  }, [dayMonthFmt]);
+  }, [shortDay]);
 
   // Derive the page that contains selectedMonday. Re-derives whenever
   // selectedMonday or weeks change so navigation to a new week auto-scrolls