fix: bind the server explicitly with Bun.serve so Compute serves it

Author: kristof-siket

index.ts

@@ -5,7 +5,9 @@ const app = new Hono();
 app.get("/", (c) => c.text("compute-e2e-happy: ok"));
 app.get("/health", (c) => c.json({ ok: true }));
 
-export default {
-  port: Number(process.env.PORT ?? 8080),
-  fetch: app.fetch,
-};
+// Bind explicitly (like the build-runner's server.ts) so the server starts when
+// Compute runs this module — `export default { port, fetch }` only auto-serves
+// when Bun runs the file directly as the entrypoint, not through Compute's build.
+const port = Number(process.env.PORT ?? 8080);
+Bun.serve({ port, fetch: app.fetch });
+console.info(`compute-e2e-happy listening on :${port}`);