Add attendee count field to booking requests and display it

Updates API schemas and database to include attendee count for bookings, modifies the public request form to accept this new optional field, and displays the attendee count on the booking details.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 77cfe984-2c65-4152-bb7a-0df28274fe66
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 9c655ed7-866c-454d-b646-e458df854c65
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/c3c252e4-c83d-40ca-9fff-99a3ea60701e/77cfe984-2c65-4152-bb7a-0df28274fe66/OsTuUKE
Replit-Helium-Checkpoint-Created: true

artifacts/api-server/src/routes/protocol.ts

@@ -161,6 +161,7 @@ const bookingCreateSchema = z
     roomId: z.number().int().positive(),
     title: z.string().trim().min(1).max(500),
     requesterName: z.string().trim().max(300).nullable().optional(),
+    attendeeCount: z.number().int().positive().max(100000).nullable().optional(),
     startsAt: isoDateTime,
     endsAt: isoDateTime,
     notes: z.string().trim().max(5000).nullable().optional(),
@@ -175,6 +176,7 @@ const bookingPatchSchema = z
     roomId: z.number().int().positive().optional(),
     title: z.string().trim().min(1).max(500).optional(),
     requesterName: z.string().trim().max(300).nullable().optional(),
+    attendeeCount: z.number().int().positive().max(100000).nullable().optional(),
     startsAt: isoDateTime.optional(),
     endsAt: isoDateTime.optional(),
     notes: z.string().trim().max(5000).nullable().optional(),
@@ -191,6 +193,7 @@ const publicBookingRequestSchema = z
     requesterName: z.string().trim().min(1).max(300),
     requesterPhone: z.string().trim().min(3).max(40),
     requesterOrg: z.string().trim().max(300).nullable().optional(),
+    attendeeCount: z.number().int().positive().max(100000).nullable().optional(),
     startsAt: isoDateTime,
     endsAt: isoDateTime,
     notes: z.string().trim().max(5000).nullable().optional(),
@@ -458,6 +461,7 @@ router.post(
             requesterName: body.requesterName,
             requesterPhone: body.requesterPhone,
             requesterOrg: body.requesterOrg ?? null,
+            attendeeCount: body.attendeeCount ?? null,
             startsAt,
             endsAt,
             status: "pending",
@@ -687,6 +691,7 @@ router.post(
             roomId: body.roomId,
             title: body.title,
             requesterName: body.requesterName ?? null,
+            attendeeCount: body.attendeeCount ?? null,
             startsAt,
             endsAt,
             status: canApprove ? "approved" : "pending",
@@ -773,6 +778,9 @@ router.patch(
             ...(body.requesterName !== undefined
               ? { requesterName: body.requesterName }
               : {}),
+            ...(body.attendeeCount !== undefined
+              ? { attendeeCount: body.attendeeCount }
+              : {}),
             startsAt,
             endsAt,
             ...(body.notes !== undefined ? { notes: body.notes } : {}),