💥 feat(agent)!: 添加主机监控代理首版

* 实现周期采集、快照缓存、本地 HTTP API 和主动上报

* 补齐 Linux 和 Windows 主机、网络、资源、进程和 TCP 采集

* 添加服务生命周期管理、配置加载、构建脚本和测试覆盖

BREAKING CHANGE: network.ips 拆分为 network.ipv4s 和 network.ipv6s。

internal/service/service_windows.go

@@ -0,0 +1,43 @@
+//go:build windows
+
+package service
+
+import (
+	"os/exec"
+	"strings"
+
+	"mfd-monitor-agent/internal/config"
+)
+
+// windowsManager manages the agent through the Windows Service Control Manager.
+type windowsManager struct{}
+
+// newManager returns the Windows service manager.
+func newManager() Manager {
+	return windowsManager{}
+}
+
+// Install registers the agent executable as an auto-start Windows Service.
+func (windowsManager) Install(executable string, cfg config.Config, opts InstallOptions) error {
+	args := []string{`"` + executable + `"`, "run"}
+	if opts.ConfigPath != "" {
+		args = append(args, "-config", `"`+opts.ConfigPath+`"`)
+	}
+	return exec.Command("sc.exe", "create", cfg.Service.Name, "binPath=", strings.Join(args, " "), "DisplayName=", cfg.Service.DisplayName, "start=", "auto").Run()
+}
+
+// Uninstall stops and removes the configured Windows Service.
+func (windowsManager) Uninstall(cfg config.Config) error {
+	_ = exec.Command("sc.exe", "stop", cfg.Service.Name).Run()
+	return exec.Command("sc.exe", "delete", cfg.Service.Name).Run()
+}
+
+// Start asks the Windows Service Control Manager to start the service.
+func (windowsManager) Start(cfg config.Config) error {
+	return exec.Command("sc.exe", "start", cfg.Service.Name).Run()
+}
+
+// Stop asks the Windows Service Control Manager to stop the service.
+func (windowsManager) Stop(cfg config.Config) error {
+	return exec.Command("sc.exe", "stop", cfg.Service.Name).Run()
+}