[teamleaderleo]

Leo (2026-10-29): "look at these first 4 pictures. we want to have that capabilitiy of rendering like claude code desktop has stuff organized."

PR (a) of three for that ask: grouping and step rows. (b) is the step body (ShellBlock/HighlightedCode), (c) is the question and checklist cards.

What changes

An opened "Ran N commands" group (and "Read N files", "Searched N") now draws the way Claude Code desktop lists a run's steps:

• It is one rounded group in the cards' ring, under the "Ran N commands" line.
• The thought that led into the run comes first, as its full text. Thoughts before a run of two or more commands, reads or searches now join that run's group (toolGroups.ts). When the run is a single call, the thought keeps its own row as before.
• After that comes one row per step. A call shows its one-line summary (Claude's Bash description when there is one). A later thought shows as one line cut with an ellipsis. Each row's ▸ sits right after its words, and hairlines separate the rows.
• Every step shows. GROUP_TAIL and "+K more" are removed, because Claude desktop lists every step. fix(chat): show every item when expanding a tool group #26591 has since landed and does the same thing. This branch takes it in: commands, reads and searches draw through the step rows here, and edits groups keep fix(chat): show every item when expanding a tool group #26591's row cache.
• What a step opens to is unchanged: CommandRow and ToolRow still toggle open to their existing body, which is PR (b)'s seam.
• These all keep working: failure words, the running spinner, background marks, find-in-chat reveal, edits groups with their diffs on the tree guide, a finished run folding when text follows it, keyboard and aria. Group disclosure keys use the first call's id (groupId), so a group keeps its key and its open state when a thought joins it at the front.

The gallery has three looks, selected with the data-tool-steps-look root attribute: card (the default I picked), tree (the old tree guide with hairlines) and zebra (no ring, alternate rows filled). Card is the closest match to the reference and reads as one unit that ends before the next paragraph. Tree keeps the old hierarchy but doesn't separate the run from the prose. Zebra is noisy when rows are short.

I also added a scenario gallery page, agent-pane.claude-desktop-organization. It renders through the real transcript path with a public-safe fixture: a paragraph, an answered QuestionCard, a 3-step plan, a thought followed by 5 shell steps, then prose. PRs (b) and (c) will show up on it when they land.

Gallery: agent-pane.claude-desktop-organization, agent-pane.tool-group-alignment

Performance

Harness: a temporary bun + JSDOM test (not committed). It renders the real ToolRows with an opened group of 13 commands, a leading thought and two merged thoughts, then streams 40 output chunks into the running command. For each chunk it counts CommandRow draws and the wall time. Both runs used the same Linux fast-checks runner (32 vCPU), 3 runs each. Before is the old base be41ec40; after is this branch's code at c7085c7a, before base was brought in.

metric	before	after	delta	harness
CommandRow draws per streamed chunk (13 rows shown)	13.00	1.00	-12.00 (-92%)	run 41029158038
ms per streamed chunk (3 runs)	1.58 / 1.53 / 1.37	1.03 / 0.72 / 0.61	about -45%	run 41029158038

Since then, base landed #26591, which memoizes rows on its own path. The current head keeps this PR's Step path for commands, reads and searches, and #26591's entryNodes path for edits. I did not re-measure against the newest base, because the shared REST quota refused the dispatch.

webviews/test/transcript-group-step-renders.test.tsx keeps this in place. Across 5 streamed chunks only the streaming call draws, the step list is never rebuilt (stepProbe.build), and when a new call joins, the list is rebuilt once and only the new row draws. No new timers, observers or animation loops.

Risk

Medium, contained to the transcript's tool-group rendering. A thought that leads into a run now moves from its own row into the group, as the first step (open). Its open/closed choice is still keyed by the same thought id. Long runs (20+ commands) now list every row instead of the last five.

Tests

• New: transcript-group-step-renders.test.tsx (render counts).
• Updated: transcript-density, transcript-group-thought-state (lead thought, no "+K more"), transcript-consolidated-runs (lead-thought grouping).
• 122 tests across the 10 related files pass on Linux CI, and typecheck is clean.

🤖 Generated with Claude Code

Agent session: agent session

[github-actions]

cmux status _{(one comment, edited in place; each line is updated by the job that owns it)}

Review 56c70a5: HQ feed card · gallery before/after runs · checks

App of this head (app.zip, kept 1 day)

gh workflow run reload-build.yml -R manaflow-ai/cmux --ref feat-cmux-next -f tag=pr27896 -f ref=claude-sr2/transcript-group-rows -f platform=macos -f backend_mode=local

Unclear: web / react-apps-check failed: no known signature; failed step: Check webview test shards.

CI failed on 56c70a5d46 (run 41079698408 attempt 1): 2 code, 1 unknown.

Job	Verdict	Why
web / react-apps-base-check (2)	code	a web test failed
web / react-apps-base-check (3)	code	a web test failed
web / react-apps-check	unknown	no known signature; failed step: Check webview test shards

Failures:

• seen on other PRs motion-scale.test.ts motion scale > no webview CSS, TS or TSX animates off the scale: failed (job)
• seen on other PRs new-tab-cards-template.test.tsx Cards with the agent's chips draws the split, and the mic stays in the box: failed (job)
• seen on other PRs new-tab-composer-layout.test.tsx Claude New Tab location and model share the quiet row under the box: failed (job)

Matched log lines

web / react-apps-base-check (2): (fail) motion scale > no webview CSS, TS or TSX animates off the scale [752.88ms]
web / react-apps-base-check (3): (fail) Cards with the agent's chips draws the split, and the mic stays in the box [13.86ms]

Not re-run automatically: web / react-apps-base-check (2), web / react-apps-base-check (3), web / react-apps-check are not machine failures.

Written by scripts/ci/classify_failures.py (ci-failure-attribution.yml); signatures are its SIGNATURES table. A machine verdict is the runner's fault, not this PR's; yours means the failing file is one this PR changes, also red on main that main's latest full suite fails the same way, seen on other PRs that it failed on another pull request's run lately.

red: web / Web status; base red: the same failure on the base c66f534; does not block
red: web / react-apps-base-check (2); no finished base run on c66f534 to compare; do not merge until green; see lane-rules
red: web / react-apps-base-check (3); no finished base run on c66f534 to compare; do not merge until green; see lane-rules
red: web / react-apps-check; base red: the same failure on the base c66f534; does not block

Gallery before/after for 56c70a5: 5 states rendered, 6 images differ (picked by the Gallery: line in the PR body). Images are in the run's artifact, not on this public PR.

gh run download 41079698011 -R manaflow-ai/cmux -n gallery-advisory-27896-56c70a5d463df04f82a816d152dc2170a7c16a28 (then read gallery-review.json)

States

State	Theme	Status	Diff	Picked by
agent-pane.claude-desktop-organization/card	Apple System Colors Light	new	0%	pr-body
agent-pane.claude-desktop-organization/card	Apple System Colors	new	0%	pr-body
agent-pane.claude-desktop-organization/tree	Apple System Colors Light	new	0%	pr-body
agent-pane.claude-desktop-organization/tree	Apple System Colors	new	0%	pr-body
agent-pane.claude-desktop-organization/zebra	Apple System Colors Light	new	0%	pr-body
agent-pane.claude-desktop-organization/zebra	Apple System Colors	new	0%	pr-body
agent-pane.tool-group-alignment/light	Apple System Colors Light	unchanged	0%	pr-body
agent-pane.tool-group-alignment/light	Apple System Colors	unchanged	0%	pr-body
agent-pane.tool-group-alignment/dark	Apple System Colors Light	unchanged	0%	pr-body
agent-pane.tool-group-alignment/dark	Apple System Colors	unchanged	0%	pr-body

_{Pick other states with a Gallery: entry.id, entry.id/variant line in the PR body.}

[teamleaderleo]

Owned by an agent session · session

[blacksmith-sh]

Found 12 test failures on Blacksmith runners:

Failures

Test	View Logs
main.DeveloperIdAppTests.test_download_prints_the_active_profile_only/ test_download_prints_the_active_profile_only	View Logs
stubs: /System/Library/Frameworks/Security.framework/Versions/A/Security has no stub/ Security has no stub	View Logs
stubs: CoreFoundation.tbd: install-name /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation, missing 1: ['_CFRetain']/ CoreFoundation, missing 1: ['_CFRetain']	View Logs
stubs: CoreFoundation.tbd: install-name /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation, missing 1: ['_log2']/ CoreFoundation, missing 1: ['_log2']	View Logs
test/motion-scale.test.ts/motion-scale.test	View Logs
test/motion-scale.test.ts/motion-scale.test	View Logs
test/new-tab-cards-template.test.tsx/new-tab-cards-template.test.tsx	View Logs
test/new-tab-cards-template.test.tsx/new-tab-cards-template.test.tsx	View Logs
test/new-tab-composer-layout.test.tsx/new-tab-composer-layout.test.tsx	View Logs
test/new-tab-composer-layout.test.tsx/new-tab-composer-layout.test.tsx	View Logs

...and 2 more test failures. View all on Blacksmith

^{Need help on this PR? Tag @codesmith-bot with what you need.}

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[teamleaderleo]

Review (codex gpt-6-astra high, next-review): BLOCK at ff42f14

• [P1] webviews/test/transcript-group-step-renders.test.tsx:27 — CommandRow is exported through React.memo, so RealCommandRow is an object, not a callable function. Calling it directly throws TypeError, making the new test fail. Render it as <RealCommandRow {...props} />.
• [P2] webviews/src/agent-session/acpmux/conversation/conversation.css:2297 — The DOM places command metadata before the chevron, but these rules assign them columns 4 and 2 without specifying a row. Grid’s default sparse placement moves the chevron onto a second row, breaking the intended single-line steps. Assign these children grid-row: 1 or reorder the markup.

[teamleaderleo]

Review (codex gpt-6-astra high, router-review): SHIP at 56c70a5

SHIP

No blocking findings. Focused tests were not runnable because bun is unavailable in the review environment.

[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4108762076801 (8e3aaa2401)
• cmux NEXT nightly 1.0.0-nightly.4108980870001 (d9f2f7af55)
• cmux NEXT nightly 1.0.0-nightly.4109063053901 (bf70709747)
• cmux NEXT nightly 1.0.0-nightly.4109296117601 (72882288da)
• cmux NEXT nightly 1.0.0-nightly.4109410702301 (aead767cca)