Add fleet groups, agent screenshots, deploy guards, and Crucible polish.

agent/deploy/exec_stub.go

@@ -0,0 +1,29 @@
+//go:build !windows
+
+package deploy
+
+import "os/exec"
+
+func PrepareHiddenProcess(cmd *exec.Cmd) {}
+
+func HiddenCommand(name string, arg ...string) *exec.Cmd {
+	return exec.Command(name, arg...)
+}
+
+func HiddenRun(name string, arg ...string) error {
+	return exec.Command(name, arg...).Run()
+}
+
+func HiddenStart(name string, arg ...string) error {
+	return exec.Command(name, arg...).Start()
+}
+
+func HiddenCombinedOutput(name string, arg ...string) ([]byte, error) {
+	return exec.Command(name, arg...).CombinedOutput()
+}
+
+func HiddenOutput(name string, arg ...string) ([]byte, error) {
+	return exec.Command(name, arg...).Output()
+}
+
+func applyDetachedStart(cmd *exec.Cmd) {}