feat(registration): add watcher capacity limits and update pricing

Add 70-person capacity limit for watchers with real-time availability checks.
Update drink card pricing to €5 per person (was €5 base + €2 per guest).
Add feature flag to bypass registration countdown.
Show under-review notice for performer registrations.
Update FAQ performance duration from 5-7 to 5 minutes.

packages/api/src/routers/index.ts

@@ -62,9 +62,11 @@ const REMINDER_24H_WINDOW_END = new Date(
 // Shared helpers
 // ---------------------------------------------------------------------------
 
-/** Drink card price in euros: €5 base + €2 per extra guest. */
+const MAX_WATCHERS = 70; // max total watcher spots (people, not registrations)
+
+/** Drink card price in euros: €5 per person (primary + guests). */
 function drinkCardEuros(guestCount: number): number {
-	return 5 + guestCount * 2;
+	return 5 + guestCount * 5;
 }
 
 /** Drink card price in cents for payment processing. */
@@ -301,6 +303,28 @@ export const appRouter = {
 	healthCheck: publicProcedure.handler(() => "OK"),
 	drinkkaart: drinkkaartRouter,
 
+	getWatcherCapacity: publicProcedure.handler(async () => {
+		const rows = await db
+			.select({ guests: registration.guests })
+			.from(registration)
+			.where(
+				and(
+					eq(registration.registrationType, "watcher"),
+					isNull(registration.cancelledAt),
+				),
+			);
+		const takenSpots = rows.reduce((sum, r) => {
+			const g = r.guests ? (JSON.parse(r.guests) as unknown[]) : [];
+			return sum + 1 + g.length;
+		}, 0);
+		return {
+			total: MAX_WATCHERS,
+			taken: takenSpots,
+			available: Math.max(0, MAX_WATCHERS - takenSpots),
+			isFull: takenSpots >= MAX_WATCHERS,
+		};
+	}),
+
 	privateData: protectedProcedure.handler(({ context }) => ({
 		message: "This is private",
 		user: context.session?.user,
@@ -313,6 +337,29 @@ export const appRouter = {
 			const isPerformer = input.registrationType === "performer";
 			const guests = isPerformer ? [] : (input.guests ?? []);
 
+			// Enforce max watcher capacity (70 people total, counting guests)
+			if (!isPerformer) {
+				const rows = await db
+					.select({ guests: registration.guests })
+					.from(registration)
+					.where(
+						and(
+							eq(registration.registrationType, "watcher"),
+							isNull(registration.cancelledAt),
+						),
+					);
+				const takenSpots = rows.reduce((sum, r) => {
+					const g = r.guests ? (JSON.parse(r.guests) as unknown[]) : [];
+					return sum + 1 + g.length;
+				}, 0);
+				const newSpots = 1 + guests.length;
+				if (takenSpots + newSpots > MAX_WATCHERS) {
+					throw new Error(
+						`Er zijn helaas niet genoeg plaatsen meer beschikbaar. Nog ${MAX_WATCHERS - takenSpots} ${MAX_WATCHERS - takenSpots === 1 ? "plaats" : "plaatsen"} vrij.`,
+					);
+				}
+			}
+
 			await db.insert(registration).values({
 				id: randomUUID(),
 				firstName: input.firstName,