cmux-next sidebar: a working row's second line says what its agent does now ("Now: …")
Slice S2 of Leo's sidebar-organization ask (item A, the "now:" line). It builds on #23390.
What changes
While an agent chat in a workspace works, a row that already has a second line shows "Now: …" there, with what the agent is doing right now (for example "Now: Running the test suite"). The text is the acpmux lane's step, which acpmux already masks; the raw prompt is never shown.
- Rows keep their height. A one-line row stays one line, so rows don't grow and shrink as agents start and stop.
- Which chat. With several chats working in one workspace, the one that started last is shown.
- Toggle. Debug toggle
sidebar.nowLine, on by default. - Strings. New string
sidebar.row.now, in all 21 locales.
Capture
The capture uses expanded rows; the Debug fixture sidebar.laneFixture gives each row a sample agent state, picked by workspace name so it is the same on every run. The working rows (mobile, api-server) show "Now: Running the test suite", and S1's words show on the rest.
Capture steps-f80a41da25 at 3bc155c1a105 (fleet build, capture mini, text checked for private data)
| Light | Dark |
|---|---|
 |  |
Tests
Tests/CmuxNextAppTests/SidebarNowLineTests.swift (committed first):
- a working row knows its step and an idle one doesn't;
- a row with a second line says it there;
- a one-line row stays one line;
- toggle off.
Observed / Not run
- Ran:
- Not run locally: the Swift suites (no builds on this Mac); this PR's CI runs them.
Changelog
- Added: A working sidebar row's second line says what its agent is doing now.
Agent session: cosmic-gray
🤖 Generated with Claude Code