Fix: Fix issue where temporary directory is not cleaned and error tracking false positives when repeatedly installing plugins (#8148)

* fix(star): 修复重复安装插件时临时目录未清理及错误追踪误报问题

- 引入 skip_failed_tracking 标志，当目标目录已存在时跳过失败安装追踪，避免将预期冲突错误误记为安装失败
- 修复 finally 块中临时目录清理逻辑，确保冲突场景下 plugin_upload_* 临时目录也能被正确删除
- 新增测试用例 test_install_plugin_from_file_conflict_keeps_failed_plugins_clean，验证重复安装同名插件时 failed_plugin_dict 为空且无残留临时目录

Ref #8122

* style(star): ruff 格式化

astrbot/core/star/star_manager.py

@@ -1798,6 +1798,7 @@ class PluginManager:
             dir=self.plugin_store_path, prefix="plugin_upload_"
         )
         temp_desti_dir = desti_dir
+        skip_failed_tracking = False
 
         try:
             self.updator.unzip_file(zip_file_path, desti_dir)
@@ -1807,6 +1808,7 @@ class PluginManager:
                 metadata_dir_name,
             )
             if target_plugin_path != desti_dir and os.path.exists(target_plugin_path):
+                skip_failed_tracking = True
                 raise Exception(f"安装失败：目录 {metadata_dir_name} 已存在。")
             if target_plugin_path != desti_dir:
                 os.rename(desti_dir, target_plugin_path)
@@ -1870,17 +1872,20 @@ class PluginManager:
 
             return plugin_info
         except Exception as e:
-            self._track_failed_install_dir(
-                dir_name=dir_name,
-                plugin_path=desti_dir,
-                error=e,
-            )
+            if not skip_failed_tracking:
+                self._track_failed_install_dir(
+                    dir_name=dir_name,
+                    plugin_path=desti_dir,
+                    error=e,
+                )
             logger.warning(
                 f"安装插件 {dir_name} 失败，插件安装目录：{desti_dir}",
             )
             raise
         finally:
-            if temp_desti_dir != desti_dir and os.path.isdir(temp_desti_dir):
+            if (skip_failed_tracking or temp_desti_dir != desti_dir) and os.path.isdir(
+                temp_desti_dir
+            ):
                 try:
                     remove_dir(temp_desti_dir)
                 except Exception as e:

tests/test_plugin_manager.py

@@ -28,13 +28,15 @@ class MockStar:
         self.info = {"repo": TEST_PLUGIN_REPO, "readme": ""}
 
 
-def _write_local_test_plugin(plugin_path: Path, repo_url: str):
+def _write_local_test_plugin(
+    plugin_path: Path, repo_url: str, version: str = "1.0.0"
+):
     """Creates a minimal valid plugin structure."""
     plugin_path.mkdir(parents=True, exist_ok=True)
     metadata = {
         "name": TEST_PLUGIN_NAME,
         "repo": repo_url,
-        "version": "1.0.0",
+        "version": version,
         "author": "AstrBot Team",
         "desc": "Local test plugin",
         "short_desc": "Local test short description",
@@ -386,6 +388,41 @@ async def test_install_plugin_from_file_dependency_install_flow(
         assert ("load", TEST_PLUGIN_DIR) in events
 
 
+@pytest.mark.asyncio
+async def test_install_plugin_from_file_conflict_keeps_failed_plugins_clean(
+    plugin_manager_pm: PluginManager,
+    local_updator: Path,
+    monkeypatch,
+    tmp_path: Path,
+):
+    zip_file_path = tmp_path / "plugin_upload_helloworld_v2.zip"
+    zip_file_path.write_text("placeholder", encoding="utf-8")
+    plugin_store_path = Path(plugin_manager_pm.plugin_store_path)
+    existing_upload_dirs = set(plugin_store_path.glob("plugin_upload_*"))
+
+    def mock_unzip_file(zip_path: str, target_dir: str) -> None:
+        assert zip_path == str(zip_file_path)
+        _write_local_test_plugin(
+            Path(target_dir),
+            TEST_PLUGIN_REPO,
+            version="2.0.0",
+        )
+
+    assert local_updator.is_dir()
+    monkeypatch.setattr(plugin_manager_pm.updator, "unzip_file", mock_unzip_file)
+
+    with pytest.raises(Exception, match=f"安装失败：目录 {TEST_PLUGIN_DIR} 已存在。"):
+        await plugin_manager_pm.install_plugin_from_file(str(zip_file_path))
+
+    new_upload_dirs = [
+        upload_dir
+        for upload_dir in plugin_store_path.glob("plugin_upload_*")
+        if upload_dir not in existing_upload_dirs
+    ]
+    assert plugin_manager_pm.failed_plugin_dict == {}
+    assert new_upload_dirs == []
+
+
 @pytest.mark.asyncio
 @pytest.mark.parametrize("dependency_install_fails", [False, True])
 async def test_reload_failed_plugin_dependency_install_flow(