Clarify greeting requirement before implementation

[Copilot]

The reported issue only contained "hi", which indicates a greeting-related change is expected but does not define route, response type, or scope. No implementation was applied yet to avoid introducing unintended behavior.

• Issue Summary

  • The request appears to be for a greeting behavior update ("hi"), but acceptance criteria are not specified.

• Changes in this PR

  • No source code changes were introduced.
  • Repository baseline was inspected to identify candidate touchpoints (/ route and existing handlers) for a minimal follow-up patch once expected behavior is confirmed.

• Next Minimal Patch (after confirmation)

  • Apply one surgical route-level change, e.g.:

    app.get("/hi", (req, res) => res.send("hi"));