Feature request: show agent status indicators in project list (left panel)

Summary

The project list in the left panel currently shows a blue dot when an agent needs attention, but there are no indicators for other agent states. It would be very helpful to see at a glance whether an agent is actively processing, idle/done, or waiting for input — without having to switch into each project.

Requested states to indicate

• Processing / thinking — agent is actively working (e.g. spinner or animated indicator)
• Done / idle — agent has finished and is waiting (e.g. checkmark or neutral icon)
• Needs attention — already implemented (blue dot) ✓

Expected behavior

Each project entry in the left panel displays a small status indicator reflecting the current agent state, updating in real time as the agent transitions between states.

Current behavior

Only "needs attention" (blue dot) is indicated. Processing and done states are invisible from the project list, requiring the user to click into each project to check status.

Use case

When running multiple agents across several projects simultaneously, it's difficult to know which ones are still working and which have finished or need input without manually switching between them.

Environment

• macOS
• Claude Code desktop app