Sub-agent zoom (focus)

[kfsone]

Describe the feature or problem you'd like to solve

Ability to make a sub-agent directly observable or interactable.

Proposed solution

"/focus [_{|session]" temporarily scopes the session to the context of the specified sub-agent allowing the user to observe it's activities and/or interact with the agent.}

The nature of sub-agents means that interaction might be unadvisable, but an ability to checkpoint or rollback an agent would be incredibly helpful.

Example prompts or workflows

• Sub-agent invokes a command incorrectly and is then consumed with addressing an artificial issue:

• • invokes "python" instead of using the virtualenv / uv, compounds by trying to "pip install", ...
• • invokes "gcc" instead of "clang",
• • tries to submit bash expressions to powershell,

• Sub-agent appears to run for 45+ minutes with no obvious indications of activity, but parent agent says it's "working",

• • allows user to see what it is that it's doing, diagnose a faulty loop

• Sub-agent invokes a unit test that spams output but is actually stuck,

• • parent agents typically see this as motion/progress,

• Sub-agent is performing commands that generate large volumes of text, eviscerating model's Attention,

• • hard to recognize/diagnose when you can't see the sub-agent progress,

• Two sub-agents with overlapping objectives (e.g concurrently run cmake) introducing a non-reproducible effect and one's Attention focuses on diagnosis,

• • user can diagnose/cancel the individual faulty agent,
• • if interaction is possible, user can correct or rewind the agent and avoid losing a long-running context,

Additional context

No response