Fix Windows build: extract Setsid into platform-specific file

Author: Patel230

internal/daemon/daemon.go

@@ -146,7 +146,7 @@ func EnsureRunning(projectDir, addr string) error {
 	cmd.Dir = projectDir
 	cmd.Stdout = nil
 	cmd.Stderr = nil
-	cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
+	setSysProcAttr(cmd)
 	if err := cmd.Start(); err != nil {
 		return fmt.Errorf("failed to start yaad daemon: %w", err)
 	}

internal/daemon/sysattr_unix.go

@@ -0,0 +1,12 @@
+//go:build !windows
+
+package daemon
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+func setSysProcAttr(cmd *exec.Cmd) {
+	cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
+}

internal/daemon/sysattr_windows.go

@@ -0,0 +1,7 @@
+//go:build windows
+
+package daemon
+
+import "os/exec"
+
+func setSysProcAttr(_ *exec.Cmd) {}