fix(devtools): package Codex daemon and use upstream Pi

packages/codex-daemon-test.py

@@ -0,0 +1,40 @@
+"""Run manually outside the Nix sandbox: python3 packages/codex-daemon-test.py /path/to/codex."""
+import json
+import os
+from pathlib import Path
+import subprocess
+import sys
+import tempfile
+
+binary = str(Path(sys.argv[1]).resolve())
+with tempfile.TemporaryDirectory(prefix="codex-daemon-test-") as directory:
+    home = Path(directory)
+    settings = home / "app-server-daemon/settings.json"
+    settings.parent.mkdir()
+    settings.write_text(json.dumps({"updater": {"autoUpdateEnabled": False}}))
+    env = {**os.environ, "CODEX_HOME": directory}
+
+    def run(*arguments, check=True):
+        return subprocess.run(
+            [binary, "app-server", "daemon", *arguments],
+            env=env, check=check, timeout=60, text=True,
+            stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+        )
+
+    try:
+        started = run("start", check=False)
+        print(started.stdout)
+        started.check_returncode()
+        release = home / "packages/app-server-daemon/current"
+        assert (release / "codex-package.json").is_file()
+        assert (release / "bin/codex").is_file()
+        version = run("version")
+        print(version.stdout)
+        status = json.loads(version.stdout)
+        assert status["status"] == "running", status
+        assert status["appServerVersion"] == status["cliVersion"], status
+        print("Codex daemon startup passed")
+    finally:
+        stopped = run("stop", check=False)
+        print(stopped.stdout)
+        stopped.check_returncode()