opsbot-core: the loop

One long-lived agent session in the bot's repo runs a self-paced cycle. A cycle is: begin → check → act, or say nothing new → end → compute the next wake. The idle path is one command and one line of output; the model is not involved until the check says there is something to do.

If output shows a follow-up command starting with opsbot-core, run it as scripts/opsbot-core … (from this skill's directory) or by the path the output printed — the CLI is not on PATH.