fix(plugin): read the runtime compatibility gate from the declared snapshot (#6761)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

tests/test_plugin_virtual_instances.py

@@ -623,7 +623,11 @@ def test_loader_runtime_gate_only_rejects_explicit_incompatible_declarations(
     tmp_path,
     monkeypatch,
 ):
-    """运行目录缺少声明或 runtime 为空时保持历史插件可加载。"""
+    """未建立声明或声明为空时保持历史插件可加载，只有显式 false 才拒绝。
+
+    判据来自安装时提交的声明快照。运行目录里的 ``package.json`` 是模块联邦组件的
+    npm manifest，主程序既不写它也不读它，这里一并钉住：它的存在不能影响门禁。
+    """
     from app.runtime.extensions.plugin import loader as loader_module
 
     monkeypatch.setattr(
@@ -633,19 +637,34 @@ def test_loader_runtime_gate_only_rejects_explicit_incompatible_declarations(
     )
     monkeypatch.setattr(loader_module, "is_free_threaded_runtime", lambda: True)
 
-    missing = tmp_path / "missing"
-    missing.mkdir()
-    assert PluginLoader._is_runtime_compatible(missing)
+    declarations = {
+        "empty": {},
+        "rejected": {"v3": True, "v3t": False},
+        "legacygeneration": {"v3": False},
+        "federated": {},
+    }
+    loader = PluginLoader(
+        plugins_root=tmp_path,
+        import_preparer=lambda **_kwargs: None,
+        import_scanner=lambda **_kwargs: None,
+        runtime_declaration=lambda plugin_id: declarations.get(plugin_id, {}),
+        log=_logger(),
+    )
 
-    empty = tmp_path / "empty"
-    empty.mkdir()
-    (empty / "package.json").write_text('{"runtime": {}}', encoding="utf-8")
-    assert PluginLoader._is_runtime_compatible(empty)
+    # 未建立身份或声明快照的存量安装
+    assert loader.is_runtime_compatible("missing")
+    assert loader.is_runtime_compatible("empty")
+    assert not loader.is_runtime_compatible("rejected")
+    assert not loader.is_runtime_compatible("legacygeneration")
 
-    rejected = tmp_path / "rejected"
-    rejected.mkdir()
-    (rejected / "package.json").write_text('{"v3t": false}', encoding="utf-8")
-    assert not PluginLoader._is_runtime_compatible(rejected)
+    # 插件自带的 npm manifest 不参与判定
+    federated = tmp_path / "federated"
+    federated.mkdir()
+    (federated / "package.json").write_text(
+        '{"name": "moviepilot-federated-plugin", "v3t": false}',
+        encoding="utf-8",
+    )
+    assert loader.is_runtime_compatible("federated")
 
 
 def test_loader_marks_incompatible_runtime_status_when_skipping(
@@ -669,7 +688,6 @@ def test_loader_marks_incompatible_runtime_status_when_skipping(
     plugin_dir = tmp_path / "rejectedplugin"
     plugin_dir.mkdir()
     (plugin_dir / "__init__.py").write_text("", encoding="utf-8")
-    (plugin_dir / "package.json").write_text('{"v3t": false}', encoding="utf-8")
 
     statuses: dict[str, PluginRuntimeStatus] = {}
     loader = PluginLoader(
@@ -677,6 +695,9 @@ def test_loader_marks_incompatible_runtime_status_when_skipping(
         import_preparer=lambda **_kwargs: None,
         import_scanner=lambda **_kwargs: None,
         runtime_status_writer=statuses.__setitem__,
+        runtime_declaration=lambda plugin_id: (
+            {"v3t": False} if plugin_id == "rejectedplugin" else {}
+        ),
         log=_logger(),
     )