完成 Ruff 全量清理

web/backend/services/proxy_service.py

@@ -189,7 +189,7 @@ class ProxyService:
 
             push("error", "未配置代理地址或API")
             push("result", "")
-        except Exception as e:
+        except Exception as e:  # noqa: BLE001 外部接口与任务边界需要保留宽泛异常兜底
             push("error", f"测试异常: {e}")
             push("result", "")
 
@@ -254,7 +254,7 @@ class ProxyService:
                     if whitelist_ip:
                         local_ip = whitelist_ip
                         push("info", f"从代理API获取到本机IP: {local_ip}")
-                except Exception as e:
+                except Exception as e:  # noqa: BLE001 外部接口与任务边界需要保留宽泛异常兜底
                     push("warning", f"代理API请求失败: {e}")
 
             if not local_ip:
@@ -293,7 +293,7 @@ class ProxyService:
                 push("success" if sync_ok else "error", f"白名单同步: {sync_msg}")
 
             push("result", "")
-        except Exception as e:
+        except Exception as e:  # noqa: BLE001 外部接口与任务边界需要保留宽泛异常兜底
             push("error", f"测试异常: {e}")
             push("result", "")