Initial commit: Null DRM Official

Capture, decrypt, and restream toolkit with compiled-in app modules
(RTE, TG4, BBC), on-device MITM proxy, streamd control plane, and www.
BBC module.yaml is published (clear streams); other module values stay local.

apps/streamd/internal/supervisor/proc_unix.go

@@ -0,0 +1,20 @@
+//go:build !windows
+
+package supervisor
+
+import (
+	"os"
+	"os/exec"
+	"syscall"
+)
+
+func hideWindow(cmd *exec.Cmd) {}
+
+func processDead(pid int) bool {
+	p, err := os.FindProcess(pid)
+	if err != nil {
+		return true
+	}
+	err = p.Signal(syscall.Signal(0))
+	return err != nil
+}