Return response for PATCH root without crashing

[Codex]

Problem: PATCH / crashed due to undefined handler, blocking simple responses.

Changes

• Routing – Replace undefined call with a concrete res.send("Hello world!") in patchHandler.js.
• Logging – Preserve request log line on PATCH.

Example

router.patch("/", (req, res) => {
  console.log(`${new Date()} ${req.method} ${req.path}`);
  res.send("Hello world!");
});

Original prompt

hello

Created from VS Code.