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>

lib/edition.ts

@@ -1,9 +1,7 @@
-import { Plan } from "@prisma/client";
-
 export function isSelfHostedEdition(): boolean {
-  return process.env.S2VID_EDITION === "selfhosted";
+  return true;
 }
 
-export function hasProFeatures(plan: Plan): boolean {
-  return isSelfHostedEdition() || plan === "PREMIUM";
+export function hasProFeatures(): boolean {
+  return true;
 }