add payment, trust badge, handle race condition, fix booking schema

lib/limits.ts

@@ -9,6 +9,10 @@ export const LIMITS = {
   MAX_MOUNTAIN_LENGTH: 100,
   MAX_LOCATION_LENGTH: 120,
   MAX_DESCRIPTION_LENGTH: 5000,
+  /** Meeting point & tiap blok include/exclude */
+  MAX_MEETING_POINT_LENGTH: 500,
+  MAX_TRIP_ITINERARY_LENGTH: 8000,
+  MAX_TRIP_BULLET_SECTION_LENGTH: 4000,
   MAX_REVIEW_COMMENT: 500,
   MAX_IMAGE_URLS: 5,
   MAX_URL_LENGTH: 2048,

lib/trip-dates.ts

@@ -81,3 +81,30 @@ export function isPastTripLastDayForReview(
   );
   return Date.now() > endMs;
 }
+
+/**
+ * Tampilkan tanggal trip untuk UI: pakai **kalender UTC** (sama dengan
+ * `tripStoredInstantFromYmd` & filter Open Trip), supaya tidak bergeser
+ * karena timezone runtime (server vs browser).
+ */
+export function formatTripCalendarDateLong(
+  d: Date | string,
+  locale = "id-ID"
+): string {
+  const date = typeof d === "string" ? new Date(d) : d;
+  return new Intl.DateTimeFormat(locale, {
+    dateStyle: "long",
+    timeZone: "UTC",
+  }).format(date);
+}
+
+export function formatTripCalendarDateRangeLong(
+  start: Date | string,
+  end?: Date | string | null,
+  locale = "id-ID"
+): string {
+  const startStr = formatTripCalendarDateLong(start, locale);
+  if (!end) return startStr;
+  const endStr = formatTripCalendarDateLong(end, locale);
+  return `${startStr} — ${endStr}`;
+}

lib/trust.ts

@@ -0,0 +1,2 @@
+/** Minimal trip sebagai organizer untuk badge "Trip leader" (heuristik MVP). */
+export const TRIP_LEADER_MIN_TRIPS = 2;