Add a workaround for Chrome's DevTools standard settings

[Harriethw]

When trying to setup routing logic in app/routes.js, I was getting the error:

Error: Page not found: /.well-known/appspecific/com.chrome.devtools.json

This is related to Chrome's Dev Tools due to a change in 2025 . It looks like it should be possible to suppress this by disabling dev tools at chrome://flags/#devtools-project-settings and restarting, but this didn't work for me locally.

As this is a prototype kit for use by non-technical people it might be easier to include the below workaround by default. It has already been
implemented in use cases in NHSDigital.

// app/routes.js
// Workaround for Chrome DevTools requesting a specific URL
router.get('/.well-known/appspecific/com.chrome.devtools.json', (_req, res) => {
  // Either return an empty JSON object
  res.json({})
  // Or send a 204 No Content response
  // res.status(204).end();
})