{"title": "Friendlier greeting and add bye helper", "body": "## Summary\n\n- `greet` now returns `Hello, <name>!` instead of the lowercase `hi <name>`\n- Added a `bye(name)` helper in `greet.ts` returning `Bye, <name>`\n\n## Testing\n\n- Not run — no test suite or build step exercised for this change\n- Suggested check: call `greet(\"Ada\")` and `bye(\"Ada\")` and confirm they return `Hello, Ada!` and `Bye, Ada`\n- Note for reviewers: `bye` omits the trailing `!` that `greet` now uses; confirm this is intentional"}
