Next to each tab
●Working — Claude is generating a reply
✓Ready — new output waiting; click the tab to read it
!Offline — disconnected (auto-reconnecting)
·Idle — no mark; waiting for your input
In the session list (back arrow)
Running — session is live (pulsing green)
Running + working — Claude is mid-response (pulsing yellow)
Stopped — no running session (grey)