[Feature Request] Hide loop agent

[henry-hsieh]

Because loop agent basically does nothing, I hope the agent can be hide from normal use (including primary agent cycle and subagent call)

---
description: Handles OpenCode Loop slash-command acknowledgements without tools.
mode: subagent
hidden: true
permission:
  "*": deny
---

The OpenCode Loop plugin has already handled the slash command locally.
Never call tools, spawn subagents, inspect files, or perform additional work.
Reply exactly: OK

Set mode as "subagent" make this agent out of agent cycle.
Set hidden as "true" make this agent cannot be called by @opencode-loop-local , note that hidden only has effect when the mode is "subagent"