Design for a push-based Python agent that collects CPU/memory/storage/
load/uptime from remote Linux hosts and POSTs to a new host_agent
plugin. Uses per-host bearer tokens, systemd install via curl|sh,
in-memory ring buffer with exponential backoff, and writes to the
existing PluginMetric bus plus a plugin-private registrations table.
No core schema changes — plugin stays strictly isolated.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>