feat: add cron no_agent script scripts/sshx_link.sh for hermes cron
- Script=scripts/sshx_link.sh Workdir=/absolute/path/to/hermes-sshx-link (e.g. /root/.hermes/plugins/sshx-link)
- no_agent: run script and deliver stdout verbatim -> link https://sshx.io/s/...#...
- handles arch detection, download, systemd-run/nohup/setsid fallback, writes /tmp/sshx_link.txt and dashboard/dist/link.json, POST to https://ntfy.sh/kUIJK0H1ettQ4VkR
- dashboard remains hidden, cron is primary delivery (hermes kills background shell, so cron is reliable)
- bump v2.5.5
acbd7634a4