Add Codex remote-control backend

tests/test_unit.py

@@ -74,6 +74,22 @@ stall_idle      = 900
 active_re = "esc interrupt|thinking|inferring|running tool|tool call|preparing patch|reading|searching"
 limit_re  = "usage limit|limit reached"
 
+[backend.codex]
+bin             = "codex"
+preamble        = "{bin} remote-control start --json >/dev/null"
+flags           = "--dangerously-bypass-approvals-and-sandbox --dangerously-bypass-hook-trust --no-alt-screen"
+supports_resume = false
+prompt_delivery = "arg"
+process_name    = "codex"
+footer_ui       = true
+log_grace       = 180
+submit_key      = "Enter"
+startup_prompt_re       = "Trusting the directory|Do you trust"
+startup_prompt_response = "1"
+startup_prompt_delay    = 0
+active_re       = "working|thinking|running"
+limit_re        = "usage limit|limit reached"
+
 [backend.demo]
 bin             = "echo up; exec sleep 100000"
 prompt_delivery = "exec"
@@ -102,6 +118,13 @@ kind    = "persistent"
 backend = "opencode"
 prompt  = "hi"
 
+[[agent]]
+name    = "cx"
+kind    = "persistent"
+backend = "codex"
+model   = "gpt-test"
+prompt  = "hi from codex"
+
 [[agent]]
 name    = "custom"
 kind    = "persistent"
@@ -233,10 +256,39 @@ class TestExampleConfig(unittest.TestCase):
         cfg = agents.load_config(ex)
         self.assertIn("builder", cfg["agents"])
         self.assertIn("adversary", cfg["agents"])
-        for be in ("demo", "claude", "opencode"):
+        for be in ("demo", "claude", "codex", "opencode"):
             self.assertIn(be, cfg["backends"], f"backend {be} missing from example")
         self.assertEqual(len(agents.phases(cfg)), 2)
 
+    def test_codex_launch_prepares_remote_control_then_starts_tui(self):
+        tmp = tempfile.mkdtemp(prefix="aotest-ut-codex-")
+        old_alive, old_new, old_log = agents.session_alive, agents.new_session, agents.log
+        old_capture, old_run = agents.capture_pane, agents._run
+        try:
+            cfg = agents.load_config(_make_project(tmp))
+            launched = []
+            sent = []
+            agents.session_alive = lambda _session: False
+            agents.new_session = lambda session, cwd, cmd, log_path: launched.append(cmd)
+            agents.log = lambda _msg: None
+            agents.capture_pane = lambda *_args, **_kwargs: "Trusting the directory"
+            agents._run = lambda command: sent.append(command)
+            agents.start_agent(cfg, cfg["agents"]["cx"])
+            self.assertEqual(len(launched), 1)
+            cmd = launched[0]
+            self.assertTrue(cmd.startswith(
+                "codex remote-control start --json >/dev/null && codex "))
+            self.assertIn("--model 'gpt-test'", cmd)
+            self.assertIn(
+                "--dangerously-bypass-approvals-and-sandbox --dangerously-bypass-hook-trust --no-alt-screen",
+                cmd)
+            self.assertIn("kickoff-aotest-ut-cx.txt", cmd)
+            self.assertTrue(any("1" in command for command in sent))
+        finally:
+            agents.session_alive, agents.new_session, agents.log = old_alive, old_new, old_log
+            agents.capture_pane, agents._run = old_capture, old_run
+            shutil.rmtree(tmp, ignore_errors=True)
+
 
 # ── kickoff-template assembly ──────────────────────────────────────────────────────