- Replace 8 placeholder price IDs (price_starter_monthly, etc.) with real
Stripe test-mode price IDs created via API
- Add STRIPE_SECRET_KEY, STRIPE_WEBHOOK_SECRET, NEXT_PUBLIC_BILLING_PROVIDER,
and NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY to docker-compose.yml (build args + runtime)
- Add NEXT_PUBLIC_BILLING_PROVIDER ARG/ENV to Dockerfile
- Enable team and personal account billing (was 'false')
- Created Stripe webhook endpoint for production URL
- Created 4 Stripe products (Starter/Pro/Verband/Enterprise) with monthly+yearly prices
Checkout was crashing because:
1. STRIPE_SECRET_KEY was missing → Zod validation failed at createStripeClient()
2. STRIPE_WEBHOOK_SECRET was missing → same Zod schema rejection
3. NEXT_PUBLIC_BILLING_PROVIDER was unset → BillingProviderSchema.parse() failed
4. Price IDs were placeholders, not real Stripe price_xxx IDs
28188bb3a6