Agent Note: The running status line shows the turn phase and elapsed time

Status: implemented Archived: 2026-07-26

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Problem

While a turn ran, the full-screen TUI showed a single static "Working" spinner. It conveyed neither how long the current step had taken nor what the agent was doing — waiting on the model, thinking, streaming a response, or running tools — so a slow or stalled turn was indistinguishable from a fast one.

Decision

• While a turn runs, the status line above the editor shows a derived phase label with elapsed time, keeping the trailing — Enter sends steering, Esc cancels hint. The four phases and their labels are waiting → "Waiting for the first token", thinking → "Thinking", responding → "Responding", and executing → "Executing tools".
• The phase is presentation state the TUI derives from live session events, not a session event or agent status of its own. step/start enters waiting; an assistant/chunk reasoning delta or reasoning block-start enters thinking; a text delta or text block-start enters responding; a tool/call enters executing. The event map is merge-extensible, so every other event kind falls through a default and leaves the phase unchanged.