fix(roadtrip): the vias, the alternatives, the pacing and the missing warning

Choosing another road on a leg that already carried a via appended the new
point behind the old one, so the day drove south to the first and north to the
second: a zigzag matching neither the line drawn under the button nor the
distance printed on it. The alternatives are computed for the two bare
endpoints, so the write has to replace the leg, which is what the direct branch
beside it already did.

A day's vias were only loaded while road-trip mode was being looked at, and the
three handlers that re-anchor them after a stop is added, removed or reordered
are reachable from the place inspector in both modes. With the switch off they
computed their correction from an empty list and wrote nothing, so a deleted
stop left the detour on a leg nobody chose, for the traveller and for every
collaborator. They are loaded whenever the addon is on now.

Seam routing paced itself by sleeping after each request, and storing a result
shortened the key its own effect depends on: React tore the effect down
mid-sleep, the cleanup aborted it, and the next request went out immediately.
Thirteen seams left at round-trip speed, the shared routing hosts refused the
tail, and a refused seam changes no state so nothing ever retried it. The wait
now happens before the request, against a clock that outlives the effect.

The "avoidance not honoured" badge could never appear on the rail: the field
behind it was published every round and never written. Only the second engine
reports what it achieved against what was asked, and the rail plans in the
browser, so it never saw the server's own copy — a motorway crossing read as a
motorway-free drive.

Two smaller ones. `trip.toast.loadError` has been called since the first commit
and exists in no locale, so both call sites printed the key itself; it is
written now in all 23. And the phone shell honoured the road-trip session flag
while having no rail, no drive lines and no switch to leave it, so narrowing a
desktop window took the trip overview away and listed every booked night twice.

shared/src/i18n/ar/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'تم حذف المكان',
   'trip.toast.selectDay': 'يرجى اختيار يوم أولًا',
   'trip.toast.assignedToDay': 'تم إسناد المكان إلى اليوم',
+  'trip.toast.loadError': 'تعذر تحميل الرحلة',
   'trip.toast.reorderError': 'فشل إعادة الترتيب',
   'trip.toast.reservationUpdated': 'تم تحديث الحجز',
   'trip.toast.reservationAdded': 'تمت إضافة الحجز',

shared/src/i18n/br/trip.ts

@@ -20,6 +20,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Lugar excluído',
   'trip.toast.selectDay': 'Selecione um dia primeiro',
   'trip.toast.assignedToDay': 'Lugar atribuído ao dia',
+  'trip.toast.loadError': 'Não foi possível carregar a viagem',
   'trip.toast.reorderError': 'Falha ao reordenar',
   'trip.toast.reservationUpdated': 'Reserva atualizada',
   'trip.toast.reservationAdded': 'Reserva adicionada',

shared/src/i18n/ca/trip.ts

@@ -20,6 +20,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Lloc eliminat',
   'trip.toast.selectDay': 'Selecciona un dia primer',
   'trip.toast.assignedToDay': 'Lloc assignat al dia',
+  'trip.toast.loadError': "No s'ha pogut carregar el viatge",
   'trip.toast.reorderError': "No s'ha pogut reordenar",
   'trip.toast.reservationUpdated': 'Reserva actualitzada',
   'trip.toast.reservationAdded': 'Reserva afegida',

shared/src/i18n/cs/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Místo bylo smazáno',
   'trip.toast.selectDay': 'Prosím nejdříve vyberte den',
   'trip.toast.assignedToDay': 'Místo bylo přiřazeno ke dni',
+  'trip.toast.loadError': 'Cestu se nepodařilo načíst',
   'trip.toast.reorderError': 'Nepodařilo se změnit pořadí',
   'trip.toast.reservationUpdated': 'Rezervace aktualizována',
   'trip.toast.reservationAdded': 'Rezervace přidána',

shared/src/i18n/de/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Ort gelöscht',
   'trip.toast.selectDay': 'Bitte wähle zuerst einen Tag aus',
   'trip.toast.assignedToDay': 'Ort wurde dem Tag zugewiesen',
+  'trip.toast.loadError': 'Reise konnte nicht geladen werden',
   'trip.toast.reorderError': 'Fehler beim Sortieren',
   'trip.toast.reservationUpdated': 'Reservierung aktualisiert',
   'trip.toast.reservationAdded': 'Reservierung hinzugefügt',

shared/src/i18n/en/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Place deleted',
   'trip.toast.selectDay': 'Please select a day first',
   'trip.toast.assignedToDay': 'Place assigned to day',
+  'trip.toast.loadError': 'Could not load the trip',
   'trip.toast.reorderError': 'Failed to reorder',
   'trip.toast.reservationUpdated': 'Reservation updated',
   'trip.toast.reservationAdded': 'Reservation added',

shared/src/i18n/es/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Lugar eliminado',
   'trip.toast.selectDay': 'Selecciona primero un día',
   'trip.toast.assignedToDay': 'Lugar asignado al día',
+  'trip.toast.loadError': 'No se pudo cargar el viaje',
   'trip.toast.reorderError': 'No se pudo reordenar',
   'trip.toast.reservationUpdated': 'Reserva actualizada',
   'trip.toast.reservationAdded': 'Reserva añadida',

shared/src/i18n/fr/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Lieu supprimé',
   'trip.toast.selectDay': "Veuillez d'abord sélectionner un jour",
   'trip.toast.assignedToDay': 'Lieu attribué au planning',
+  'trip.toast.loadError': 'Impossible de charger le voyage',
   'trip.toast.reorderError': 'Échec de la réorganisation',
   'trip.toast.reservationUpdated': 'Réservation mise à jour',
   'trip.toast.reservationAdded': 'Réservation ajoutée',

shared/src/i18n/gr/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Το μέρος διαγράφηκε',
   'trip.toast.selectDay': 'Παρακαλώ επιλέξτε πρώτα μια ημέρα',
   'trip.toast.assignedToDay': 'Το μέρος ανατέθηκε στην ημέρα',
+  'trip.toast.loadError': 'Δεν ήταν δυνατή η φόρτωση του ταξιδιού',
   'trip.toast.reorderError': 'Η αναδιάταξη απέτυχε',
   'trip.toast.reservationUpdated': 'Η κράτηση ενημερώθηκε',
   'trip.toast.reservationAdded': 'Η κράτηση προστέθηκε',

shared/src/i18n/hu/trip.ts

@@ -20,6 +20,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Hely törölve',
   'trip.toast.selectDay': 'Kérjük, először válassz egy napot',
   'trip.toast.assignedToDay': 'Hely hozzárendelve a naphoz',
+  'trip.toast.loadError': 'Az utazást nem sikerült betölteni',
   'trip.toast.reorderError': 'Nem sikerült átrendezni',
   'trip.toast.reservationUpdated': 'Foglalás frissítve',
   'trip.toast.reservationAdded': 'Foglalás hozzáadva',

shared/src/i18n/id/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Tempat dihapus',
   'trip.toast.selectDay': 'Pilih hari terlebih dahulu',
   'trip.toast.assignedToDay': 'Tempat ditambahkan ke hari',
+  'trip.toast.loadError': 'Tidak dapat memuat perjalanan',
   'trip.toast.reorderError': 'Gagal mengurutkan ulang',
   'trip.toast.reservationUpdated': 'Reservasi diperbarui',
   'trip.toast.reservationAdded': 'Reservasi ditambahkan',

shared/src/i18n/it/trip.ts

@@ -20,6 +20,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Luogo eliminato',
   'trip.toast.selectDay': 'Seleziona prima un giorno',
   'trip.toast.assignedToDay': 'Luogo assegnato al giorno',
+  'trip.toast.loadError': 'Impossibile caricare il viaggio',
   'trip.toast.reorderError': 'Impossibile riordinare',
   'trip.toast.reservationUpdated': 'Prenotazione aggiornata',
   'trip.toast.reservationAdded': 'Prenotazione aggiunta',

shared/src/i18n/ja/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': '場所を削除しました',
   'trip.toast.selectDay': 'まず日を選択してください',
   'trip.toast.assignedToDay': '場所を日に割り当てました',
+  'trip.toast.loadError': '旅行を読み込めませんでした',
   'trip.toast.reorderError': '並び替えに失敗しました',
   'trip.toast.reservationUpdated': '予約を更新しました',
   'trip.toast.reservationAdded': '予約を追加しました',

shared/src/i18n/ko/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': '장소가 삭제되었습니다',
   'trip.toast.selectDay': '먼저 날을 선택하세요',
   'trip.toast.assignedToDay': '장소가 날에 배정되었습니다',
+  'trip.toast.loadError': '여행을 불러오지 못했습니다',
   'trip.toast.reorderError': '순서 변경 실패',
   'trip.toast.reservationUpdated': '예약이 업데이트되었습니다',
   'trip.toast.reservationAdded': '예약이 추가되었습니다',

shared/src/i18n/nl/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Plaats verwijderd',
   'trip.toast.selectDay': 'Selecteer eerst een dag',
   'trip.toast.assignedToDay': 'Plaats toegewezen aan dag',
+  'trip.toast.loadError': 'Kan de reis niet laden',
   'trip.toast.reorderError': 'Herordenen mislukt',
   'trip.toast.reservationUpdated': 'Reservering bijgewerkt',
   'trip.toast.reservationAdded': 'Reservering toegevoegd',

shared/src/i18n/pl/trip.ts

@@ -20,6 +20,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Miejsce zostało usunięte',
   'trip.toast.selectDay': 'Proszę najpierw wybrać dzień',
   'trip.toast.assignedToDay': 'Miejsce przypisane do dnia',
+  'trip.toast.loadError': 'Nie udało się wczytać podróży',
   'trip.toast.reorderError': 'Nie udało się zmienić kolejności',
   'trip.toast.reservationUpdated': 'Rezerwacja została zaktualizowana',
   'trip.toast.reservationAdded': 'Rezerwacja została dodana',

shared/src/i18n/ru/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Место удалено',
   'trip.toast.selectDay': 'Сначала выберите день',
   'trip.toast.assignedToDay': 'Место назначено на день',
+  'trip.toast.loadError': 'Не удалось загрузить поездку',
   'trip.toast.reorderError': 'Ошибка изменения порядка',
   'trip.toast.reservationUpdated': 'Бронирование обновлено',
   'trip.toast.reservationAdded': 'Бронирование добавлено',

shared/src/i18n/sv/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Plats raderad',
   'trip.toast.selectDay': 'Vänligen välj en dag först',
   'trip.toast.assignedToDay': 'Plats tilldelad till dag',
+  'trip.toast.loadError': 'Det gick inte att ladda resan',
   'trip.toast.reorderError': 'Misslyckades att ordna om',
   'trip.toast.reservationUpdated': 'Reservation uppdaterad',
   'trip.toast.reservationAdded': 'Reservation tillagd',

shared/src/i18n/tr/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Yer silindi',
   'trip.toast.selectDay': 'Lütfen önce bir gün seçin',
   'trip.toast.assignedToDay': 'Yer güne atandı',
+  'trip.toast.loadError': 'Gezi yüklenemedi',
   'trip.toast.reorderError': 'Sıralama yapılamadı',
   'trip.toast.reservationUpdated': 'Rezervasyon güncellendi',
   'trip.toast.reservationAdded': 'Rezervasyon eklendi',

shared/src/i18n/uk/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Місце видалено',
   'trip.toast.selectDay': 'Спочатку виберіть день',
   'trip.toast.assignedToDay': 'Місце призначено на день',
+  'trip.toast.loadError': 'Не вдалося завантажити подорож',
   'trip.toast.reorderError': 'Помилка зміни порядку',
   'trip.toast.reservationUpdated': 'Бронювання оновлено',
   'trip.toast.reservationAdded': 'Бронювання додано',

shared/src/i18n/vi/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': 'Địa điểm đã bị xóa',
   'trip.toast.selectDay': 'Vui lòng chọn một ngày trước',
   'trip.toast.assignedToDay': 'Địa điểm đã được gán vào ngày',
+  'trip.toast.loadError': 'Không thể tải chuyến đi',
   'trip.toast.reorderError': 'Không thể sắp xếp lại',
   'trip.toast.reservationUpdated': 'Đã cập nhật đặt chỗ',
   'trip.toast.reservationAdded': 'Đã thêm đặt chỗ',

shared/src/i18n/zh-TW/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': '地點已刪除',
   'trip.toast.selectDay': '請先選擇一天',
   'trip.toast.assignedToDay': '地點已分配到當天',
+  'trip.toast.loadError': '無法載入行程',
   'trip.toast.reorderError': '排序失敗',
   'trip.toast.reservationUpdated': '預訂已更新',
   'trip.toast.reservationAdded': '預訂已新增',

shared/src/i18n/zh/trip.ts

@@ -24,6 +24,7 @@ const trip: TranslationStrings = {
   'trip.toast.placeDeleted': '地点已删除',
   'trip.toast.selectDay': '请先选择一天',
   'trip.toast.assignedToDay': '地点已分配到当天',
+  'trip.toast.loadError': '无法加载行程',
   'trip.toast.reorderError': '排序失败',
   'trip.toast.reservationUpdated': '预订已更新',
   'trip.toast.reservationAdded': '预订已添加',