feat: migrate hello baseline from Python to TypeScript

Replace the greenfield Python hello world with a Node.js 22/TypeScript/npm toolchain while preserving the existing greeting behavior.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/hello.test.ts

@@ -0,0 +1,13 @@
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import { greet } from "./hello.js";
+
+describe("greet", () => {
+  it("returns the default greeting", () => {
+    assert.equal(greet(), "Hello, TicketLab MCP!");
+  });
+
+  it("returns a greeting for a custom name", () => {
+    assert.equal(greet("World"), "Hello, World!");
+  });
+});