加入了LOGO，

admin/dashboard/blueprints/system.py

@@ -11,6 +11,8 @@ from collections import deque
 # 创建系统信息蓝图
 system_bp = Blueprint('system', __name__)
 logger = logging.getLogger("SystemBlueprint")
+# 记录应用启动时间
+APP_START_TIME = time.time()
 
 # 页面路由
 @system_bp.route('/wx_logs')
@@ -31,7 +33,7 @@ def api_system_info():
             "cpu_usage": psutil.cpu_percent(),
             "memory_usage": psutil.virtual_memory().percent,
             "disk_usage": psutil.disk_usage('/').percent,
-            "uptime": time.time() - psutil.boot_time(),
+            "uptime": time.time() - APP_START_TIME,  # 使用应用启动时间计算运行时长
             "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
         }