Agent chat: a run of rows and status lines sit 16 from the prose around them by teamleaderleo · Pull Request #31879 · manaflow-ai/cmux

teamleaderleo · 2026-11-02T05:52:51Z

Leo, 2026-11-02: "well now there's sometimes too much spacing between tool calls", and "ugh we'll really want to study how chatgpt desktop and claude desktop do their spacing i just feel gross looking at these".

What changed

A run of one-line rows (tool calls, sent messages, inbox and notice lines) and any other status line now sits 16 from the reply prose above or below it. It was the 24 block gap. Spec: leo-workspace design/transcript-spacing.md, rule 4 and rows step-to-prose / prose-to-step.

Reference	Run to prose
chatgpt.com	16 box to box
ChatGPT desktop	about 40 centre to centre
Claude Code desktop	37 to 40 centre to centre
claude.ai	10 box to box
cmux, before	24 box to box (46 / 46.75 centre to centre)
cmux, after	16 box to box (38.375 centre to centre)

New grid token gap-run (16): layout-grid.json, then gen-layout-grid.py, which writes desktop.css; the Swift copy in LayoutGrid.swift is updated by hand.
transcriptGap gives it to step↔message pairs. A new MARK_STATUS mark covers every other isStatusRow line: a background task's or a subagent's end, a compaction, a failover. Every status line between two replies keeps one gap above and the same gap below. Steps stay flush with each other, and a prompt keeps its centred 32 turn gap.
A note folded into a run (.cv-tool-note, noteGap in model.ts) uses the same 16.
The table test from test(chat): transcript spacing table, measured against ChatGPT and Claude #31614 drops its two pending marks, so step-to-prose and prose-to-step are enforced from now on.
transcript-interim-prose-gap now reads gap-run.
continuationSpacing has a new unit test of the gap rules.

Observed / Not run

Fleet, before the rebase onto Agent chat: the prompt bubble as ChatGPT and Claude draw it (44 one line, 16 sides, 12 radius) #31719: the table rows pass, continuationSpacing passes 9/9, and interim-prose-gap passes.
Fails the same way on base:
- transcript-row-alignment asks for 26 more room above a status row than below. Base draws 24/24, this branch 16/16. The grid lane is retargeting it to the grid tokens in a test-only PR.
- transcript-spacing-reference (2026-10-30 values; grid lane, same PR).
- rowEstimates steer row-height test.
Fleet runs at this head and at base are in progress. Results follow in a comment.

Changelog

Changed: In agent chat, a run of tool calls or status lines sits 16px from the reply text around it instead of 24px.

Agent session: agent session

🤖 Generated with Claude Code

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

Summary by cubic

In agent chat, a run of tool-call or status lines now sits 16px from the reply prose above or below it, down from the previous 24px.

Adds a gap-run grid token (16) for the spacing between a run of rows and surrounding prose.
Applies the same gap to other status lines (task ends, compactions, failovers) and to notes folded into a run.
Steps within a run stay flush, and prompts keep their 32px turn gap.
The continuation-spacing and transcript-rhythm tests now enforce the new values.

^{Written for commit 298d5a8. Summary will update on new commits.}

design/transcript-spacing.md rule 4: chatgpt.com draws 16 between its activity rows and the reply's prose, ChatGPT and Claude Code desktop ~40 centre to centre. New grid token gap-run (16); transcriptGap gives it to step<->message, and a folded note takes it too. The table's step-to-prose and prose-to-step rows are enforced from here. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc

…runs A background task's or subagent's end, a compaction and the other isStatusRow lines get MARK_STATUS: 16 from a reply, as a tool run is, so transcript-row-alignment's one gap above and below every status row holds. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc

github-actions · 2026-11-02T05:53:05Z

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

Review 298d5a8: 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=pr31879 -f ref=lane/transcript-run-gap-16 -f platform=macos -f backend_mode=local

Gallery before/after for 298d5a8: 16 states rendered, 0 images differ, 2962 more touched states not rendered. Images are in the run's artifact, not on this public PR; the independent review of this head reads them on its own, so the PR needs no hand-made screenshots of these states.

gh run download 41402375928 -R manaflow-ai/cmux -n gallery-advisory-31879-298d5a82648636c54199fbcbf89f919ae10d9e7d (then read gallery-review.json)

States

State	Theme	Status	Diff	Picked by
`agent-pane.access-offer/turn-no-credits`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.access-offer/turn-no-credits`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.access-offer/turn-low-credits`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.access-offer/turn-low-credits`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.access-offer/turn-no-offer`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.access-offer/turn-no-offer`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single-multiedit`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single-multiedit`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped-multiedit`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped-multiedit`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single-long`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/single-long`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped-long`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.approval-edits/grouped-long`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/before`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/before`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/corner`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/corner`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/small`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/small`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/labelled`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/labelled`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/outside`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.attachment-source/outside`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.background-activity/duration-columns`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.background-activity/duration-columns`	Apple System Colors	unchanged	0%	own `conversation.css`
`agent-pane.background-activity/pinned-live-tail-light`	Apple System Colors Light	unchanged	0%	own `conversation.css`
`agent-pane.background-activity/pinned-live-tail-light`	Apple System Colors	unchanged	0%	own `conversation.css`

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

Unclear: web / react-apps-base-check (6) failed: no known signature; failed step: Run base reds and compare.

CI failed on 298d5a8264 (run 41402376020 attempt 1): 1 code, 2 unknown.

Job	Verdict	Why
web / react-apps-base-check (7)	code	a web test failed
web / react-apps-base-check (6)	unknown	no known signature; failed step: `Run base reds and compare`
web / react-apps-check	unknown	no known signature; failed step: `Check webview test shards`

Failures:

seen on other PRs plainUserHeight.test.ts plain prompt estimates keep wrapping and collapse geometry at font 14: failed (job)
seen on other PRs plainUserHeight.test.ts plain prompt estimates keep wrapping and collapse geometry at font 20: failed (job)
seen on other PRs plainUserHeight.test.ts hyphen thematic breaks keep their original parser-backed height: failed (job)
seen on other PRs guest-read-only-transcript.test.tsx read only, no row draws a control that acts on the owner's machine or daemon: failed (job)
seen on other PRs harnesses-page.test.tsx the page shows each harness's state on this Mac: failed (job)
seen on other PRs session-chip-browser.test.ts dark received: the session chip sits on the icon's centre line, padded, a link, lit alone: failed (job)
seen on other PRs session-chip-browser.test.ts light received: the session chip sits on the icon's centre line, padded, a link, lit alone: failed (job)
seen on other PRs session-info-surfaces.test.tsx over the chat, a project click opens its Files tab and the panel steps aside, still open: failed (job)

Matched log lines

web / react-apps-base-check (7): (fail) plain prompt estimates keep wrapping and collapse geometry at font 14 [2.29ms]

Not re-run automatically: web / react-apps-base-check (7), web / react-apps-base-check (6), 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; a job it gathers is red on this change (its line here); do not merge until green; see lane-rules
red: web / react-apps-base-check (6); NEW webview test reds: test/transcript-upward-anchor.test.ts > received card folds preserve painted row-box adjacency while streaming; do not merge until green; see lane-rules
red: web / react-apps-base-check (7); NEW webview test reds: src/agent-session/acpmux/rowLayoutLinearity.test.ts > bookkeeping runs are visited linearly when placing a transcript; do not merge until green; see lane-rules
red: web / react-apps-check; a job it gathers is red on this change (its line here); do not merge until green; see lane-rules

Shipped in:

cmux NEXT nightly 1.0.0-nightly.4140803457501 (219d9bda0f)
cmux NEXT nightly 1.0.0-nightly.4141067655701 (18dadc3e4d)
cmux NEXT nightly 1.0.0-nightly.4141172405601 (3dfea901d7)

teamleaderleo · 2026-11-02T05:53:25Z

Owned by an agent session · session

blacksmith-sh · 2026-11-02T05:56:26Z

Found 12 test failures on Blacksmith runners:

Failures

Test	View Logs
`src/agent-session/acpmux/plainUserHeight.test.ts/plainUserHeight.test`	View Logs
`src/agent-session/acpmux/plainUserHeight.test.ts/plainUserHeight.test`	View Logs
`test/guest-read-only-transcript.test.tsx/guest-read-only-transcript.test.tsx`	View Logs
`test/guest-read-only-transcript.test.tsx/guest-read-only-transcript.test.tsx`	View Logs
`test/harnesses-page.test.tsx/harnesses-page.test.tsx`	View Logs
`test/harnesses-page.test.tsx/harnesses-page.test.tsx`	View Logs
`test/session-chip-browser.test.ts/session-chip-browser.test`	View Logs
`test/session-chip-browser.test.ts/session-chip-browser.test`	View Logs
`test/session-info-surfaces.test.tsx/session-info-surfaces.test.tsx`	View Logs
`test/session-info-surfaces.test.tsx/session-info-surfaces.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.}

teamleaderleo · 2026-11-02T05:57:06Z

Review (codex gpt-6.1-sol xhigh, router-review): BLOCK at 5b75dea

BLOCK at 5b75dea

Visual verdict: no images; Leo tries the build

[P1] [blocking] transcriptGrid.ts:99: Update webviews/test/browser/transcript-rhythm.test.ts:150 for the new gap. Its fixture measures step↔prose gaps but still requires 24 * scale. This change produces 16px instead of 24px, and 20px instead of 30px at 125%, breaking all five cases.
[P2] [follow-up] model.ts:2149: Exclude edited-files cards from the run mark. isStepRow accepts every activity row, so these cards also acquire 16px spacing from prose, outside the stated scope of one-line runs and status lines. Apply the renderer’s isEditRow exclusion.
[P2] [follow-up] conversation.css:106: Supply after captures covering run↔prose, status↔prose, and folded-note spacing for visual verification.

transcript-rhythm measured header->message and message->group (step<->prose) against the 24 block gap; they are gridLength("gap-run") now (review of #31879). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc

teamleaderleo · 2026-11-02T06:09:27Z

Review (codex, router-review): SHIP at d7a14cf

Reviewer: codex gpt-6.1-sol xhigh, fast tier.

SHIP at d7a14cf
Visual verdict: all 16 supplied pairs are identical; they do not show the changed spacing.

No correctness findings. Grid validation and 12 gap-rule assertions pass; Bun/browser suites were unavailable.

Follow-ups: none

cmux-bot

cmux-bot approves d7a14cf: an independent review passed this exact head (router-review receipt by teamleaderleo). A push needs a new review; a later BLOCK at this head dismisses this approval.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc

teamleaderleo · 2026-11-02T06:50:30Z

Review (subagent opus-5.5 medium): SHIP at 298d5a8

Since the Codex SHIP at d7a14cf, the only change is the marks[index] = line in model.ts re-wrapped by the formatter. Tokens and logic are unchanged.
Follow-ups: none

…ard) (#32076) upwardAnchorTrace.ts keeps its own copy of transcriptGap's rules (it runs serialized in the page). #31879 drew a step or status line 16 from a reply's prose (--grid-gap-run), and the oracle still expected the 24 block gap, so every such pair counted as a blank band: "received card folds preserve painted row-box adjacency while streaming" reported blankBandFrames 79. The oracle reads --grid-gap-run for step<->message now; its negative fixture declares the token. Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

…nt's line (#32138) #31879 made every status row (model.ts isStatusRow, which includes another agent's received message) sit the run gap (16) from the reply around it. transcript-continuation-spacing still expected the block gap (24) under the reply for the gallery's peer line. Read transcriptGap(MARK_MESSAGE, MARK_STATUS) instead of a literal token. Agent-Session: https://cmux.com/deeplink/agent?id=aid-2f629b93d5a20c58e6f8 Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

…k again (#32154) #31879 made layoutConversation ask isStatusRow of every non-step row, and isStatusRow read row.incoming twice for a user row; isLineRow (via isStepRow) already read it three times. A hidden bookkeeping row went from 11 to 13 reads of incoming per placement, past rowLayoutLinearity's 12-per-row bound. isStatusRow and isLineRow now read the kind once and compare it, which leaves 10 reads per hidden row. Same results for every row. Agent-Session: https://cmux.com/deeplink/agent?id=aid-2f629b93d5a20c58e6f8 Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

teamleaderleo and others added 2 commits November 2, 2026 05:51

teamleaderleo added the risk:normal Risk tier (docs/ci/risk-tiers.md) label Nov 2, 2026

teamleaderleo had a problem deploying to ci-routing-agent November 2, 2026 05:52 — with GitHub Actions Error

teamleaderleo temporarily deployed to ci-routing-agent November 2, 2026 05:52 — with GitHub Actions Inactive

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This was referenced Nov 2, 2026

Agent chat: edited-files cards take the run gap from prose (isStepRow accepts every activity row) #31887

Closed

Agent chat: after captures for run↔prose, status↔prose and folded-note spacing (#31879) #31888

Closed

cmux-bot Bot approved these changes Nov 2, 2026

View reviewed changes

style: format the marks line

298d5a8

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Agent-Session: https://cmux.com/deeplink/agent?id=aid-81baa1463f6190d4c5dc

teamleaderleo temporarily deployed to ci-routing-agent November 2, 2026 06:49 — with GitHub Actions Inactive

teamleaderleo mentioned this pull request Nov 2, 2026

base red: transcript continuation and fold tests read the stack's grid gaps #31946

Merged

teamleaderleo merged commit 5678105 into feat-cmux-next Nov 2, 2026
193 of 205 checks passed

teamleaderleo deleted the lane/transcript-run-gap-16 branch November 2, 2026 07:28

github-actions Bot mentioned this pull request Nov 2, 2026

feat-cmux-next: Swift test targets do not compile #31975

Closed

This was referenced Nov 2, 2026

base red: the upward-anchor oracle knows the run gap (#31879 fix forward) #32076

Merged

Transcript tests: read the row's gap mark from the DOM instead of copying transcriptGap's rules #32077

Open

cubic-dev-ai Bot mentioned this pull request Nov 2, 2026

base red: continuation spacing test reads the run gap for another agent's line (#31879) #32138

Merged

teamleaderleo mentioned this pull request Nov 2, 2026

base red: transcript layout reads a row's incoming kind once per check (rowLayoutLinearity, #31879) #32154

Merged

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Agent chat: a run of rows and status lines sit 16 from the prose around them - #31879

Agent chat: a run of rows and status lines sit 16 from the prose around them#31879
teamleaderleo merged 4 commits into
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lane/transcript-run-gap-16

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