Add multi-day entries and area stay blocks

Entries gain an optional inclusive end_date (backfilled via migration): flights and travel longer than 24h show a continuation marker on following days, and a new stay entry type marks a time frame in one area (e.g. 3 days Venice) rendered as continuous bands across the calendar weeks. Stays feed the map route as stops; the route summary gains stays count and a chronological areas list with day spans. 49 API tests.

src/server/routes/trips.js

@@ -331,6 +331,13 @@ export default function tripsRoutes(db) {
       }
     }
     if (includedKm !== null) includedKm = Math.round(includedKm * 10) / 10;
+    // Stay "area blocks" in chronological order (allEntries is date-ordered).
+    const areas = allEntries
+      .filter((e) => e.type === 'stay')
+      .map((e) => ({
+        name: e.location_name || e.title,
+        days: e.end_date ? daysInclusive(e.date, e.end_date) : 1,
+      }));
     const days = daysInclusive(trip.start_date, trip.end_date);
     const locations = [];
     for (const s of stops) {
@@ -352,6 +359,8 @@ export default function tripsRoutes(db) {
         travelLegs: countType('travel'),
         activities: countType('activity'),
         rentals: countType('rental'),
+        stays: countType('stay'),
+        areas,
         kmAir: Math.round(kmAir * 10) / 10,
         kmDriven: Math.round(kmDriven * 10) / 10,
         includedKm,