[FEATURE] Support for inspecting subagent output

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently, it's really hard to understand whether my subagents are working correctly, since there is no way to inspect the output they return to the main conversation agent.

Perhaps simply pressing Ctrl-O should display what they have returned. But also it would be nice to be able to see their own internal thinking.

Proposed Solution

See above

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_