Dashboard for agent workspace activity

[ianphil]

Summary

Add a dashboard view that shows what is happening across agent workspaces so users can see overall progress at a glance.

Motivation

With multiple agents running in different workspaces, it is hard to understand current activity, blockers, and recency without clicking each workspace/agent.

Proposed solution

Create a dedicated dashboard view that aggregates agent/workspace activity, including:

• Agent/workspace name and path
• Status (running/idle/completed/failed)
• Current task/last message summary
• Last activity timestamp
• Quick actions (open workspace/agent, stop agent, view logs)

Acceptance criteria

• A dashboard view is accessible from the UI (location TBD).
• The view lists all active agents/workspaces with status and last activity.
• Selecting an entry opens the corresponding workspace/agent view.
• Updates reflect live agent events without manual refresh.

Notes

• Consider filters (active vs completed) and grouping by workspace.