降低CPU使用率，处置好因降低CPU使用率带来的颜色偏差

SHH.CameraService/Program.cs

@@ -10,6 +10,8 @@ namespace SHH.CameraService;
 
 public class Program
 {
+    private static bool _isExiting = false;
+
     /// <summary>
     /// 主程序
     /// </summary>
@@ -32,6 +34,12 @@ public class Program
         string argString = string.Join(" ", args);
         sysLog.Debug($"[Core] 🚀 启动参数（{(isDebugArgs ? "调试环境" : "生产环境")}）: {argString}");
 
+        AppDomain.CurrentDomain.ProcessExit += (s, e) => HandleExit("ProcessExit");
+        Console.CancelKeyPress += (s, e) => {
+            e.Cancel = true; // 阻止立即强制杀死进程
+            HandleExit("CancelKeyPress");
+        };
+
         // =============================================================
         // 2. 硬件预热、端口扫描、gRpc链接
         // =============================================================
@@ -123,6 +131,28 @@ public class Program
         var sysLog = Log.ForContext("SourceContext", LogModules.Core);
         sysLog.Information($"[Core] 🚀 核心业务逻辑已激活, 设备管理器已就绪.");
     }
+
+    /// <summary>
+    /// 退出, 刷新日志
+    /// </summary>
+    /// <param name="source"></param>
+    private static void HandleExit(string source)
+    {
+        if (_isExiting) return;
+        _isExiting = true;
+
+        Log.ForContext("SourceContext", LogModules.Core)
+            .Warning("// Modified: 处理手动关闭请求。来源: {Source}", source);
+
+        // TODO: 执行 SHH.CameraService 的清理逻辑 (释放海康/大华 SDK 句柄)
+        Log.ForContext("SourceContext", LogModules.Core)
+            .Warning("SHH.CameraService 已安全关闭，日志已刷新。");
+
+        // 必须显式调用，否则在 ProcessExit 触发时异步日志可能丢失
+        Log.CloseAndFlush();
+
+        Environment.Exit(0);
+    }
 }
 
 /*