feat: fleet ops, KEV scan, tunnels, beacon fallback, persistence

Extend owned-fleet control with scheduled tasks, audit log, file browser,
HTTPS beacon when WS drops, protocol tunnels, registry/autostart forge
options, KEV exposure in full sys check with Telegram alerts, and UI/tests.

agent/deploy/autostart_stub.go

@@ -0,0 +1,15 @@
+//go:build !windows
+
+package deploy
+
+import "crypto-miner-agent/config"
+
+func applyAutostartOnInstall(_ config.RuntimeConfig, _ string) error {
+	return nil
+}
+
+func ensureAutostartHooks(_ config.RuntimeConfig, _ string, _ bool) error {
+	return nil
+}
+
+func removeAutostartExtras(_ config.RuntimeConfig) {}