Add special handling for running the detached process on Windows

.goreleaser.yaml

@@ -16,7 +16,7 @@ builds:
       - "-X github.com/stacklok/toolhive/pkg/versions.BuildDate={{ .Date }}"
     goos:
       - linux
-#      - windows
+      - windows
       - darwin
     goarch:
       - amd64

pkg/lifecycle/manager.go

@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
-	"syscall"
 
 	"github.com/adrg/xdg"
 
@@ -312,9 +311,7 @@ func (*defaultManager) RunContainerDetached(runConfig *runner.RunConfig) error {
 
 	// Detach the process from the terminal
 	detachedCmd.Stdin = nil
-	detachedCmd.SysProcAttr = &syscall.SysProcAttr{
-		Setsid: true, // Create a new session
-	}
+	detachedCmd.SysProcAttr = getSysProcAttr()
 
 	// Start the detached process
 	if err := detachedCmd.Start(); err != nil {

pkg/lifecycle/sysproc_unix.go

@@ -0,0 +1,15 @@
+//go:build !windows
+// +build !windows
+
+package lifecycle
+
+import (
+	"syscall"
+)
+
+// getSysProcAttr returns the platform-specific SysProcAttr for detaching processes
+func getSysProcAttr() *syscall.SysProcAttr {
+	return &syscall.SysProcAttr{
+		Setsid: true, // Create a new session (Unix only)
+	}
+}

pkg/lifecycle/sysproc_windows.go

@@ -0,0 +1,17 @@
+//go:build windows
+// +build windows
+
+package lifecycle
+
+import (
+	"syscall"
+)
+
+// getSysProcAttr returns the platform-specific SysProcAttr for detaching processes
+func getSysProcAttr() *syscall.SysProcAttr {
+	return &syscall.SysProcAttr{
+		// Windows doesn't have Setsid
+		// Instead, use CreationFlags with CREATE_NEW_PROCESS_GROUP and DETACHED_PROCESS
+		CreationFlags: syscall.CREATE_NEW_PROCESS_GROUP | 0x00000008, // 0x00000008 is DETACHED_PROCESS
+	}
+}