chore: import upstream snapshot with attribution

tests/unit/cli-entrypoint.test.ts

@@ -0,0 +1,15 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { execFile } from "node:child_process";
+import { promisify } from "node:util";
+
+const execFileAsync = promisify(execFile);
+
+test("omniroute CLI entrypoint can print version", async () => {
+  const { stdout } = await execFileAsync(process.execPath, ["bin/omniroute.mjs", "--version"], {
+    cwd: process.cwd(),
+    env: { ...process.env, DATA_DIR: "" },
+  });
+
+  assert.match(stdout, /\b\d+\.\d+\.\d+\b/);
+});