feat(billing): env-based dev discount code forces 1 TL (NEXT_PUBLIC_DEV_DISCOUNT_CODE)

src/lib/appwrite/subscription-types.ts

@@ -15,6 +15,10 @@ export const DISCOUNT_CODES: Record<string, number> = {
 
 export function validateDiscountCode(code: string): number | null {
   const normalized = code.trim().toUpperCase();
+  // NEXT_PUBLIC_DEV_DISCOUNT_CODE: forces price to 1 TL for testing
+  // Set in Coolify env vars — remove when done testing
+  const devCode = process.env.NEXT_PUBLIC_DEV_DISCOUNT_CODE?.trim().toUpperCase();
+  if (devCode && normalized === devCode) return 1;
   return DISCOUNT_CODES[normalized] ?? null;
 }