improved settings window

internal/procctl/hidewindow_windows.go

@@ -0,0 +1,25 @@
+//go:build windows
+
+package procctl
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+// hideWindow stops the spawned process from popping a console window on
+// Windows. Every exec.Command in this package (tasklist, taskkill, docker,
+// git, go build) is a console-subsystem binary -- when the caller (this
+// admin panel process) has no console of its own to inherit (the normal
+// case once it's running detached, per procctl's own launch()), Windows
+// implicitly creates a brand new one for each child. With the live
+// Services-tab polling calling tasklist + docker compose ps every few
+// seconds, that showed up as a terminal window flashing on screen
+// repeatedly. CREATE_NO_WINDOW suppresses it without changing anything
+// about how the child runs or what output it produces.
+func hideWindow(cmd *exec.Cmd) {
+	if cmd.SysProcAttr == nil {
+		cmd.SysProcAttr = &syscall.SysProcAttr{}
+	}
+	cmd.SysProcAttr.HideWindow = true
+}