fix(plugin): close cancellable install lifecycle gaps

tests/test_plugin_dependency_service.py

@@ -1,7 +1,13 @@
+from unittest.mock import AsyncMock
 from types import SimpleNamespace
 from unittest.mock import MagicMock
 
-from app.runtime.extensions.plugin.dependency import PluginDependencyService
+import pytest
+
+from app.runtime.extensions.plugin.dependency import (
+    PluginDependencyInstallResult,
+    PluginDependencyService,
+)
 
 
 def test_install_missing_skips_installer_when_environment_is_satisfied() -> None:
@@ -35,3 +41,25 @@ def test_install_missing_preserves_list_return_contract() -> None:
 
     assert service.install_missing() == ["demo>=1"]
     installer.install.assert_called_once_with(["demo>=1"])
+
+
+@pytest.mark.asyncio
+async def test_async_install_missing_uses_async_installer() -> None:
+    """异步启动恢复必须调用可取消的依赖安装入口。"""
+    installer = SimpleNamespace(
+        async_find_missing=AsyncMock(return_value=["demo>=1"]),
+        async_install=AsyncMock(return_value=(True, "")),
+    )
+    service = PluginDependencyService(
+        system=lambda: SimpleNamespace(dependency=installer),
+        log=MagicMock(),
+    )
+
+    result = await service.async_install_missing_with_status()
+
+    assert result == PluginDependencyInstallResult(
+        missing=["demo>=1"],
+        success=True,
+    )
+    installer.async_find_missing.assert_awaited_once()
+    installer.async_install.assert_awaited_once_with(["demo>=1"])