[feat]. Add @codex -h help summary command

tests/test_webhook.py

@@ -225,6 +225,35 @@ def test_webhook_logs_when_codex_command_is_not_review(monkeypatch) -> None:
     assert any("Webhook without @codex review command" in item for item in messages)
 
 
+def test_webhook_accepts_help_short_flag_and_queues(monkeypatch) -> None:
+    monkeypatch.setattr(
+        "gitea_codex_bot.services.gitea.GiteaClient.get_pull_request",
+        lambda *_args, **_kwargs: type("PR", (), {"head_sha": "abcdef123"})(),
+    )
+
+    client = TestClient(app)
+    payload_obj = _payload("@codex -h", username="alice", comment_id=333)
+    raw = json.dumps(payload_obj).encode()
+
+    response = client.post(
+        "/webhook/gitea",
+        content=raw,
+        headers={
+            "X-Gitea-Event": "issue_comment",
+            "X-Gitea-Delivery": "d-help-1",
+            "X-Gitea-Signature": _sign(raw),
+            "Content-Type": "application/json",
+        },
+    )
+
+    assert response.status_code == 200
+    assert response.json()["status"] == "queued"
+    session_factory = get_session_factory()
+    with session_factory() as session:
+        queued = session.execute(select(ReviewJob).where(ReviewJob.trigger_comment_id == 333)).scalar_one()
+        assert queued.command == "help"
+
+
 def test_webhook_logs_when_repo_not_allowed(monkeypatch) -> None:
     messages: list[str] = []