Strip Songs2VID to a payment-free self-hosted OSS core.

Remove Stripe/billing/pricing/marketing, simplify schema and entitlements for unlimited self-host use, and keep auth, encode, and YouTube upload.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/api/v1/jobs/[id]/route.ts

@@ -1,12 +1,12 @@
 import { NextRequest, NextResponse } from "next/server";
-import { requirePaidApiUser } from "@/lib/api-auth";
+import { requireApiUser } from "@/lib/api-auth";
 import { prisma } from "@/lib/db";
 
 export async function GET(
   _req: NextRequest,
   { params }: { params: Promise<{ id: string }> },
 ) {
-  const { error, user } = await requirePaidApiUser(_req);
+  const { error, user } = await requireApiUser(_req);
   if (error || !user) return error!;
 
   const { id } = await params;