Phase8: Auto bill credit card

src/app/api/billing/setup-card/route.ts

@@ -54,12 +54,16 @@ export async function POST(request: Request) {
         country: orgBilling.country,
       },
     });
-    // Pick the base URL from the request's origin so redirects
-    // work in dev (localhost), staging, and prod without env vars.
-    const origin = new URL(request.url).origin;
+    // Base URL for redirect targets — must be the public-facing
+    // origin since Stripe redirects the browser back. Behind an
+    // ingress (Cedric's setup) request.url is the internal pod
+    // address ("0.0.0.0:3000" / cluster.svc), useless for the
+    // browser. Same env-var pattern as the invoice pay endpoint.
+    const baseUrl =
+      process.env.APP_BASE_URL ?? "https://app.pieced.ch";
     const session = await createSetupCheckoutSession({
       customerId,
-      baseUrl: origin,
+      baseUrl,
     });
     return NextResponse.json({ url: session.url });
   } catch (e) {