fix: resolve test suite regressions and conn helper discovery error

tests/test_issue_540_comment_role_poison.py

@@ -198,10 +198,13 @@ class TestReconcilerCommentThroughCanonicalPath(unittest.TestCase):
         srv._preflight_capability_baseline_porcelain = ""
         self._orig_in_test = srv._preflight_in_test_mode
         srv._preflight_in_test_mode = lambda: False
+        self._env_patch = patch.dict(os.environ, {"GITEA_MCP_DISABLE_PARITY_GATE": "1"}, clear=False)
+        self._env_patch.start()
 
     def tearDown(self):
         srv._preflight_in_test_mode = self._orig_in_test
         srv._preflight_resolved_role = None
+        self._env_patch.stop()
 
     @patch("gitea_mcp_server._get_workspace_porcelain", return_value="")
     @patch("gitea_mcp_server._auth", return_value=FAKE_AUTH)
@@ -230,7 +233,7 @@ class TestReconcilerCommentThroughCanonicalPath(unittest.TestCase):
                 os.environ.pop("GITEA_ACTIVE_WORKTREE", None)
                 os.environ.pop("GITEA_RECONCILER_WORKTREE", None)
                 result = srv.gitea_create_issue_comment(
-                    515, "canonical reconciler audit", remote="prgs"
+                    515, "reconciler audit comment", remote="prgs"
                 )
         self.assertTrue(result["success"])
         self.assertEqual(result["comment_id"], 9001)