[🐞] Qwik SSR bundle steals Astro's build.serverEntry filename, breaking astro preview and @astrojs/node standalone runtime

Which component is affected?

Integration

Describe the bug

Summary

@qwik.dev/astro's SSR build emits its bundle using whatever filename is configured as Astro's build.serverEntry. Astro detects the collision and falls back to <configured-name-without-ext>2.mjs for its own handler. Both astro preview and @astrojs/node (standalone mode) read build.serverEntry to locate the handler, so they load the Qwik bundle instead, find no handler export, and crash.

There is no pure-config workaround: any value of build.serverEntry gets claimed by Qwik.

Versions

• @qwik.dev/astro@1.0.2
• @qwik.dev/core@2.0.0-beta.34
• astro@6.3.1
• @astrojs/node@10.1.0
• Bun 1.3, macOS

Reproduction

https://stackblitz.com/~/github.com/NecroPrism4/rockypointnet-client

Steps to reproduce

Minimal astro.config.mjs:

import node from "@astrojs/node";
import qwik from "@qwik.dev/astro";
import { defineConfig } from "astro/config";

export default defineConfig({
  output: "server",
  adapter: node({ mode: "standalone" }),
  integrations: [qwik({ clientRouter: true })],
});

One Qwik component imported into an .astro page is enough.

bun run build
bun run preview      # astro preview --port 8080

Actual

[AstroUserError] The server entrypoint doesn't have a handler. Are you sure this is the right file?
  at createPreviewServer (node_modules/@astrojs/node/dist/preview.js:13:13)

bun ./dist/server/entry.mjs (the standalone production CMD) fails the same way — that file is Qwik's bundle, with only export { root as default }.

System Info

System:
    OS: macOS 14.6.1
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 1.39 GB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.14.0 - /Users/darien/.nvm/versions/node/v24.14.0/bin/node
    Yarn: 1.22.22 - /Users/darien/.nvm/versions/node/v24.14.0/bin/yarn
    npm: 11.9.0 - /Users/darien/.nvm/versions/node/v24.14.0/bin/npm
    pnpm: 10.33.0 - /Users/darien/.nvm/versions/node/v24.14.0/bin/pnpm
    bun: 1.3.10 - /Users/darien/.bun/bin/bun
  Browsers:
    Chrome: 147.0.7727.138
    Safari: 17.6

Additional Information

No response

Start with the minimal astro.config.mjs reproduction and run bun run build followed by bun run preview. Inspect the generated dist/server/entry.mjs alongside @astrojs/node/dist/preview.js to trace which server entry is loaded. Done means both Astro preview and the standalone bun ./dist/server/entry.mjs run without the missing-handler error while Qwik SSR still builds.