fix(cli): set codex process title in launcher

codex-cli/bin/codex.js

@@ -6,6 +6,9 @@ import { existsSync } from "fs";
 import { createRequire } from "node:module";
 import path from "path";
 import { fileURLToPath } from "url";
+import { setCodexProcessTitle } from "./process_title.js";
+
+setCodexProcessTitle();
 
 // __dirname equivalent in ESM
 const __filename = fileURLToPath(import.meta.url);

codex-cli/bin/process_title.js

@@ -0,0 +1,3 @@
+export function setCodexProcessTitle() {
+  process.title = "codex";
+}

codex-cli/tests/process_title.test.js

@@ -0,0 +1,16 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { setCodexProcessTitle } from "../bin/process_title.js";
+
+test("setCodexProcessTitle sets the launcher title to codex", () => {
+  const originalTitle = process.title;
+
+  try {
+    process.title = "node";
+    setCodexProcessTitle();
+    assert.equal(process.title, "codex");
+  } finally {
+    process.title = originalTitle;
+  }
+});