feat: implement real-time booking updates using Server-Sent Events (SSE) and add public booking URL sharing to the dashboard

apps/backend/src/modules/public-booking/handlers/create-public-booking.handler.ts

@@ -1,3 +1,4 @@
+import { sseManager } from '@/lib/sse';
 import {
   PublicBookingServiceError,
   createPublicBooking,
@@ -13,6 +14,22 @@ export async function createPublicBookingHandler(c: AppContext) {
 
   try {
     const booking = await createPublicBooking(complexSlug, payload);
+
+    const channel = `complex-${booking.complexId}`;
+    sseManager.emit(
+      channel,
+      JSON.stringify({
+        type: 'booking_created',
+        booking: {
+          id: booking.id,
+          courtId: booking.courtId,
+          date: booking.date,
+          startTime: booking.startTime,
+          endTime: booking.endTime,
+        },
+      })
+    );
+
     return c.json(booking, 201);
   } catch (error) {
     if (error instanceof PublicBookingServiceError) {