feat(bookings): show transport routes on map (#384, #587)

Adds from/to endpoints to flight/train/cruise/car reservations with
live map rendering. Flights use geodesic arcs and a curved duration +
distance badge; train/car/cruise render as straight or geodesic lines
with endpoint markers. Airports come from an embedded OurAirports
database (~3200 airports, offline-capable); train/cruise/car locations
via Nominatim. Per-trip connection toggle sits in the day plan
sidebar, persisted in localStorage. Clicking a map endpoint opens the
existing transport detail popup. New display setting toggles endpoint
labels on the map. Migration 105 adds the reservation_endpoints table
plus needs_review flag; existing flights are backfilled from their
IATA metadata on server startup.

client/src/i18n/translations/de.ts

@@ -176,6 +176,8 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'settings.temperature': 'Temperatureinheit',
   'settings.timeFormat': 'Zeitformat',
   'settings.routeCalculation': 'Routenberechnung',
+  'settings.bookingLabels': 'Orts-Labels auf Buchungsrouten',
+  'settings.bookingLabelsHint': 'Zeigt Bahnhofs-/Flughafennamen auf der Karte. Wenn aus, wird nur das Icon angezeigt.',
   'settings.blurBookingCodes': 'Buchungscodes verbergen',
   'settings.notifications': 'Benachrichtigungen',
   'settings.notifyTripInvite': 'Trip-Einladungen',
@@ -1017,6 +1019,13 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.flightNumber': 'Flugnr.',
   'reservations.meta.from': 'Von',
   'reservations.meta.to': 'Nach',
+  'reservations.needsReview': 'Prüfen',
+  'reservations.needsReviewHint': 'Flughafen konnte nicht automatisch erkannt werden — bitte Ort bestätigen.',
+  'reservations.searchLocation': 'Bahnhof, Hafen, Adresse suchen…',
+  'airport.searchPlaceholder': 'Flughafencode oder Stadt (z. B. FRA)',
+  'map.connections': 'Verbindungen',
+  'map.showConnections': 'Buchungsrouten anzeigen',
+  'map.hideConnections': 'Buchungsrouten ausblenden',
   'reservations.meta.trainNumber': 'Zugnr.',
   'reservations.meta.platform': 'Gleis',
   'reservations.meta.seat': 'Sitzplatz',

client/src/i18n/translations/en.ts

@@ -176,6 +176,8 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'settings.temperature': 'Temperature Unit',
   'settings.timeFormat': 'Time Format',
   'settings.routeCalculation': 'Route Calculation',
+  'settings.bookingLabels': 'Booking route labels',
+  'settings.bookingLabelsHint': 'Show station / airport names on the map. When off, only the icon is shown.',
   'settings.blurBookingCodes': 'Blur Booking Codes',
   'settings.notifications': 'Notifications',
   'settings.notifyTripInvite': 'Trip invitations',
@@ -1070,6 +1072,13 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.flightNumber': 'Flight No.',
   'reservations.meta.from': 'From',
   'reservations.meta.to': 'To',
+  'reservations.needsReview': 'Review',
+  'reservations.needsReviewHint': 'Airport could not be matched automatically — please confirm the location.',
+  'reservations.searchLocation': 'Search station, port, address…',
+  'airport.searchPlaceholder': 'Airport code or city (e.g. FRA)',
+  'map.connections': 'Connections',
+  'map.showConnections': 'Show booking routes',
+  'map.hideConnections': 'Hide booking routes',
   'reservations.meta.trainNumber': 'Train No.',
   'reservations.meta.platform': 'Platform',
   'reservations.meta.seat': 'Seat',