add platform demo fam

frontend/src/lib/server/migrate.ts

@@ -1,6 +1,7 @@
 import { SCHEMA_PLAN } from '@shared/pb/schema';
 import { PB_ENDPOINT } from '$lib/server/pocketbase';
 import { PB_EMAIL, PB_PASSWORD, MEMBER_SECRET } from '$app/env/private';
+import { getPlatformFlags } from '$lib/server/platform';
 
 let token: string | null = null;
 let tokenExpiry = 0;
@@ -20,6 +21,11 @@ async function auth(): Promise<string> {
 	return token!;
 }
 
+async function isDemo(): Promise<boolean> {
+	const flags = await getPlatformFlags();
+	return flags.demo === true;
+}
+
 async function getCollection(name: string): Promise<any | null> {
 	const t = await auth();
 	const res = await fetch(`${PB_ENDPOINT}/api/collections?filter=name='${name}'`, {
@@ -444,8 +450,10 @@ export async function migrate(): Promise<void> {
 	await ensureAccessCodes();
 	await ensurePlatform();
 	await ensureDefaultSeasons();
-	await seedDemoFamily();
-	await seedDemoCompletions();
+	if (await isDemo()) {
+		await seedDemoFamily();
+		await seedDemoCompletions();
+	}
 	console.log('[migrate] Done');
 }