Add secure automatic agent updates

scripts/install-agent.sh

@@ -26,7 +26,7 @@ install -d -m 0700 /var/lib/proxmox-dashboard-agent
 temporary_binary=$(mktemp /tmp/proxmox-dashboard-agent.XXXXXX)
 trap 'rm -f "$temporary_binary"' EXIT
 curl -fsSL "$download_url" -o "$temporary_binary"
-install -m 0755 "$temporary_binary" /usr/local/bin/proxmox-dashboard-agent
+install -m 0755 "$temporary_binary" /var/lib/proxmox-dashboard-agent/proxmox-dashboard-agent
 
 umask 077
 {
@@ -45,7 +45,7 @@ Wants=network-online.target
 [Service]
 Type=simple
 EnvironmentFile=/etc/proxmox-dashboard-agent.env
-ExecStart=/usr/local/bin/proxmox-dashboard-agent --agent --agent-server ${DASHBOARD_URL} --agent-enroll-token ${ENROLL_TOKEN} --agent-name ${AGENT_NAME} --agent-vmid ${VMID}
+ExecStart=/var/lib/proxmox-dashboard-agent/proxmox-dashboard-agent --agent --agent-server ${DASHBOARD_URL} --agent-enroll-token ${ENROLL_TOKEN} --agent-name ${AGENT_NAME} --agent-vmid ${VMID}
 Restart=always
 RestartSec=5
 NoNewPrivileges=true
@@ -59,5 +59,7 @@ WantedBy=multi-user.target
 UNIT
 
 systemctl daemon-reload
-systemctl enable --now proxmox-dashboard-agent.service
+systemctl enable proxmox-dashboard-agent.service
+systemctl restart proxmox-dashboard-agent.service
+rm -f /usr/local/bin/proxmox-dashboard-agent
 echo "Агент установлен. Через несколько секунд он появится в Dashboard."

scripts/uninstall-agent.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+set -eu
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "Запустите удаление от root." >&2
+  exit 1
+fi
+
+systemctl disable --now proxmox-dashboard-agent.service 2>/dev/null || true
+rm -f /etc/systemd/system/proxmox-dashboard-agent.service
+rm -f /etc/proxmox-dashboard-agent.env
+rm -f /usr/local/bin/proxmox-dashboard-agent
+rm -rf /var/lib/proxmox-dashboard-agent
+systemctl daemon-reload
+systemctl reset-failed proxmox-dashboard-agent.service 2>/dev/null || true
+echo "Агент и его локальные учётные данные удалены."