pivot: migrate V1 mobile from Docker to Netlify serverless

- Switch Prisma schema from SQLite to PostgreSQL
- Add netlify.toml for Netlify deployment config
- Add @netlify/plugin-nextjs for serverless Next.js
- Remove Docker build files (Dockerfile, docker-compose, start.sh)
- Remove auto-healer and scripts directories
- Update next.config.ts (remove standalone output)
- Database: falah_mobile_v1 on Contabo Postgres

src/app/api/webhooks/polar/route.ts

@@ -57,6 +57,13 @@ export async function POST(req: NextRequest) {
         );
       }
     } else {
+      if (process.env.NODE_ENV === "production") {
+        console.error("POLAR_WEBHOOK_SECRET missing in production — refusing unverified webhook");
+        return NextResponse.json(
+          { error: "Webhook secret not configured" },
+          { status: 500 }
+        );
+      }
       console.warn("POLAR_WEBHOOK_SECRET not set — skipping signature verification (dev mode)");
     }