Add trips to UI

lib/types.ts — TripRecord and TripEvent types

lib/c2api.ts — getTrips, getTrip, createTrip, deleteTrip, createTripEvent, deleteTripEvent

lib/useTrips.ts — Firestore realtime hook on the trips collection, ordered by start date

app/trips/page.tsx — List page split into Upcoming / Past sections, card click navigates to detail, "+ New Trip" modal for admins with all fields including date range and maps link

app/trips/[id]/page.tsx — Detail page fetched via C2 API (gets trip + events in one call), day-by-day itinerary with time, location, maps link, notes, and Discord attendees. Add Event modal (date constrained to trip range). Admin-only delete trip + remove event.

components/Nav.tsx — Trips link added to the nav

drb-frontend/lib/types.ts

@@ -98,6 +98,32 @@ export interface AlertRule {
   created_at?: string;
 }
 
+export interface TripEvent {
+  event_id: string;
+  trip_id: string;
+  title: string;
+  date: string;
+  time: string | null;
+  location: string;
+  location_inherited: boolean;
+  maps_link: string | null;
+  notes: string | null;
+  attendees: Record<string, string>;
+  created_at: string;
+}
+
+export interface TripRecord {
+  trip_id: string;
+  name: string;
+  location: string;
+  maps_link: string | null;
+  start_date: string;
+  end_date: string;
+  attendees: Record<string, string>;
+  created_at: string;
+  events?: TripEvent[];
+}
+
 export interface AlertEvent {
   alert_id: string;
   rule_id: string;