refactor: unify site chain data port access

tests/test_architecture_dependencies.py

@@ -467,6 +467,25 @@ def test_music_chain_uses_explicit_subscribe_data_port_getter():
     assert violations == []
 
 
+def test_site_chains_use_explicit_site_data_port_getter():
+    """站点与种子链不得把 SitePortProxy 伪装成 SiteOper。"""
+    paths = [APP_ROOT / "chain" / "site.py", APP_ROOT / "chain" / "torrents.py"]
+    violations: list[str] = []
+    for path in paths:
+        tree = ast.parse(path.read_text(encoding="utf-8-sig"), filename=str(path))
+        for node in ast.walk(tree):
+            if not isinstance(node, ast.ImportFrom):
+                continue
+            if node.module != "app.application.chain.data":
+                continue
+            if any(alias.name == "SitePortProxy" for alias in node.names):
+                violations.append(
+                    f"{path.relative_to(PROJECT_ROOT).as_posix()}:{node.lineno}"
+                )
+
+    assert violations == []
+
+
 def test_plugin_components_do_not_reexport_legacy_abi_names():
     """新插件组件只提供 canonical 能力，不得复制旧 Helper、Manager 或 Oper 导出。"""
     violations: list[str] = []

tests/test_slash_command_interactions.py

@@ -209,7 +209,10 @@ class TestSlashCommandInteractions(unittest.TestCase):
             )
         ]
 
-        with patch("app.chain.site.SiteOper.list", return_value=fake_sites), patch.object(
+        with patch(
+            "app.chain.site.get_chain_site_port",
+            return_value=SimpleNamespace(list=lambda: fake_sites),
+        ), patch.object(
             chain, "post_message"
         ) as post_message:
             chain.remote_list(channel=NotificationChannel.Web, userid="u1", source="web")