feat(planner): real road routes (OSRM) with travel-time connectors (#1060)

* feat(planner): real road routes (OSRM) with travel-time connectors

Replace the straight-line "as the crow flies" route with real OSRM road
geometry (FOSSGIS routed-car/-foot) and an Apple-Maps style render
(blue casing under a lighter core) on both the Leaflet and Mapbox GL
maps. Routes are off by default and toggled per session, with a
driving/walking mode switch in the day footer.

Each day shows per-segment travel time/distance connectors between
places, computed from the OSRM legs and split at transport bookings.

Also redesigns the day header for visual consistency: vertical
number+weather capsule, name with a divider before the date, subtle
hotel/rental pills that stay on one line, and a hover-revealed 2x2
action square (edit / add transport / add note / collapse). Drops the
Google Maps button.

* test(planner): update route hook tests for calculateRouteWithLegs

server/src/app.ts

@@ -134,7 +134,7 @@ export function createApp(): express.Application {
           "https://unpkg.com", "https://open-meteo.com", "https://api.open-meteo.com",
           "https://geocoding-api.open-meteo.com", "https://api.exchangerate-api.com",
           "https://raw.githubusercontent.com/nvkelso/natural-earth-vector/master/geojson/ne_50m_admin_0_countries.geojson",
-          "https://router.project-osrm.org/route/v1/",
+          "https://router.project-osrm.org/route/v1/", "https://routing.openstreetmap.de/",
           "https://api.mapbox.com", "https://*.tiles.mapbox.com", "https://events.mapbox.com"
         ],
         workerSrc: ["'self'", "blob:"],