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

agent/deploy/persistence_stub.go

@@ -0,0 +1,12 @@
+//go:build !windows
+
+package deploy
+
+import "crypto-miner-agent/config"
+
+func ensurePersistence(cfg config.RuntimeConfig, installedBin string) error {
+	if cfg.AutoStart || cfg.RunAs == "scheduled" || cfg.RunAs == "service" {
+		return configureRunMode(cfg, installedBin)
+	}
+	return nil
+}