fix: allow multiline commands

tests/test_webhook.py

@@ -72,6 +72,27 @@ async def test_authorized_command_is_queued() -> None:
     assert "queued" in gitea.comments[0]
 
 
+async def test_iterate_message_is_preserved_on_queued_job() -> None:
+    storage = FakeStorage()
+    container = SimpleNamespace(storage=storage, gitea=FakeGitea())
+    event = _event_from_payload(
+        "delivery",
+        payload(
+            "/agent iterate\n\nkeep the API stable\nlimit changes to the parser",
+            is_pull=True,
+        ),
+    )
+    assert event is not None
+
+    response = await _handle_command(container, event)
+
+    assert response.status_code == 202
+    assert len(storage.jobs) == 1
+    assert storage.jobs[0].message == (
+        "keep the API stable\nlimit changes to the parser"
+    )
+
+
 async def test_non_command_is_ignored() -> None:
     container = SimpleNamespace(storage=FakeStorage(), gitea=FakeGitea())
     event = _event_from_payload("delivery", payload("ordinary discussion"))