[Feature Request] Add granular setting to disable coaching hints in agent view

Bug Description
The agent view (claude agents) shows contextual coaching lines under the Completed list — e.g. "That one's running in its own worktree, isolated from your checkout…" and the "Some ideas to start with — press tab to try one…" suggestions. For frequent users these are redundant once learned (and take up valuable screen real estate), but the only way to remove them is disableAgentView, which kills the entire view.

Request: a granular setting (e.g. agentViewHints: false in settings.json) to suppress the coaching status line and "ideas to start with" suggestions while keeping the agent view fully functional.

The screenshot below is edited to remove session text and annotated to highlight the unnecessary hint text:

<img width="2418" height="1938" alt="Image" src="https://github.com/user-attachments/assets/e7f1aa26-79c2-4e27-b941-b08de584d04a" />

Version: 2.1.195

Environment Info

• Platform: darwin
• Terminal: xterm-256color
• Version: 2.1.195
• Feedback ID: 0b97ee67-55bb-440f-aec5-07b57859f119

Errors

[]