fix(qg): use check_ci_green instead of local tests on development stage

tests/test_webhooks.py

@@ -272,6 +272,46 @@ def test_gitea_ci_success_advances_to_review(mock_launcher, mock_ci):
     assert task["stage"] == "review"
 
 
+@patch("src.webhooks.gitea.notify_qg_failure")
+@patch("src.webhooks.gitea.launcher")
+def test_gitea_ci_failure_on_development_notifies_qg_failure(mock_launcher, mock_notify):
+    """BUG 6: CI failure at development is now the authoritative QG gate failing.
+
+    It must notify QG failure (not silently suppress) and must NOT advance the stage.
+    """
+    conn = get_db()
+    conn.execute(
+        "INSERT INTO tasks (plane_id, work_item_id, repo, branch, stage) VALUES (?, ?, ?, ?, ?)",
+        ("ci-fail-001", "ET-011", "enduro-trails", "feature/ET-011-test", "development"),
+    )
+    conn.commit()
+    conn.close()
+
+    resp = client.post(
+        "/webhook/gitea",
+        json={
+            "state": "failure",
+            "branches": [{"name": "feature/ET-011-test"}],
+            "repository": {"name": "enduro-trails"},
+        },
+        headers={"X-Gitea-Event": "status"},
+    )
+    assert resp.status_code == 200
+
+    # QG failure was reported for the development stage with check_ci_green.
+    assert mock_notify.called
+    args, kwargs = mock_notify.call_args
+    call = list(args) + list(kwargs.values())
+    assert "development" in call
+    assert "check_ci_green" in call
+
+    # Stage did NOT advance.
+    conn = get_db()
+    task = conn.execute("SELECT * FROM tasks WHERE plane_id = 'ci-fail-001'").fetchone()
+    conn.close()
+    assert task["stage"] == "development"
+
+
 def test_gitea_webhook_pr():
     """PR event is accepted."""
     resp = client.post(