[teamleaderleo]

Leo asked for two chat-transcript removals ("wtf have we removed this yet").

1. The blinking dots before "Thinking" / "Working for". Leo called these "the blinking ascii": the three accent dots (WorkingMark) that pulsed on a 2 s cycle at the start of the running turn's line (r2/206.png: "••• Thinking"). The line now starts with its words, and the ticking time shows the turn is alive. The activity line under a todo list (Debug agent.sessionStatus) loses the same dots. WorkingMark.tsx and its CSS are deleted.

2. "Steering · The agent reads it when its current step ends". The caption itself stopped drawing in #22616. Its two strings (steer.waiting, steer.waitingDetail) were still in the catalog, unused, so this PR deletes them and no row can draw them again. A waiting steer shows only the quiet clock and Send now. The "Steered · the agent read it" word-mark is replaced by a ✓ read receipt in #22773 (message-actions lane). This PR doesn't touch SteerMark, so the two PRs don't conflict.

Not changed: the jump-to-latest button's dots. They belong to a different control and are not on the transcript line.

Proof

• webviews/test/transcript-working-line.test.tsx: Thinking, Working for, the call in flight and the activity line each start with their words. The stylesheet has no working-mark or activity-dot rules.
• webviews/test/steer-no-caption.test.tsx: a waiting steer reads only "Send now", and the caption's words are gone from the catalog.
• webviews/test/static-status-loops.test.ts: the fixture drops the two removed loops.
• Gallery: agent-pane.transcript variants thinking and working-tokens play a check that the line has no mark before its words and no looping animation.

Changelog

• Removed: the blinking dots before "Thinking" and "Working for" in agent chat, and the leftover "Steering" caption strings.

Observed / Not run

• Independent review subagent: pass (no correctness findings; nits on stale comments and an over-broad test check, fixed in 578c29c).
• scripts/web-lint.sh: clean on the changed files (the one formatting red is base's test/tool-label-several-files.test.ts, from Agent chat: an edit of several files reads "Edit 2 files", not its first file; adopted tool-calls test follows #22658 #23011). prepush-gate.py: no new violations.
• Not run locally: bun tests and gallery plays (no tests on this Mac); CI's react-apps-check and the gallery run cover them.
• cmux-next guards / defaults-snapshot is red on base (stale settings exports for agents.trust.*, sidebar.sessionTree, NotificationModes/Preferences), not from this PR.

Agent session: cosmic-gray

🤖 Generated with Claude Code

---

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Summary by cubic

Removes the pulsing dots before “Thinking,” “Working for,” and the activity line, so each status starts with its words. Waiting steers no longer show the “Steering” caption; they show only the quiet clock and “Send now.”

• Deletes the unused caption strings from the localization catalog.
• Adds tests and gallery checks for the dot-free status lines and waiting steer.

^{Written for commit 4d641dc. Summary will update on new commits.}

[teamleaderleo]

Owned by projects-c6 on cosmic-gray · session

[github-actions]

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

Review 578c29c: 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=pr23034 -f ref=chat-remove-steering-caption-ascii -f platform=macos -f backend_mode=local

Probably yours: agent-pane-mermaid.test.tsx fails here but not on main's latest full suite. Seen on other PRs too (likely flaky): agent-pane-no-capsules.test.ts, composer-history.test.ts, composer-mention.test.ts and 20 more.

CI failed on 578c29cbc0 (run 39553495850 attempt 1): 4 code, 1 unknown.

Job	Verdict	Why
web / react-apps-check (1)	code	a web test failed
web / react-apps-check (3)	code	a web test failed
web / react-apps-check (4)	code	a web test failed
web / react-apps-check (2)	code	a web test failed
web / react-apps-check	unknown	no known signature; failed step: Check webview test shards

Failures:

• seen on other PRs agent-pane-no-capsules.test.ts agent pane page > rounds its controls as small-radius rects, not capsules: failed (job)
• seen on other PRs composer-history.test.ts ↑ and ↓ in an empty prompt step through the chat's earlier prompts: failed (job)
• seen on other PRs composer-mention.test.ts @ then letters lists the chat's matching files and Return writes the path: failed (job)
• seen on other PRs composer-mention.test.ts after picking a path markdown escapes, typing on leaves the picker closed: failed (job)
• seen on other PRs composer-mention.test.ts @proje lists other chats, then folders, then the chat folder's files: failed (job)
• seen on other PRs composer-mention.test.ts a chat named for a long prompt does not take @app from the file: failed (job)
• seen on other PRs composer-mention.test.ts a bare @ lists the most recent other chats: failed (job)
• seen on other PRs composer-mention.test.ts an @ inside a word opens nothing and asks the host for nothing: failed (job)
• seen on other PRs agent-pane-queue-steer.test.ts queued and steering prompts > the queue takes its own place in the stack: nothing is cut off or draw...: failed (job)
• seen on other PRs agent-pane-stream-jitter.test.ts webkit: scrolling up while a reply streams is never pulled back: failed (job)
• ... 14 more in the job logs

Matched log lines

web / react-apps-check (1): (fail) agent pane page > rounds its controls as small-radius rects, not capsules [12.85ms]
web / react-apps-check (3): (fail) @ then letters lists the chat's matching files and Return writes the path [2002.71ms]
web / react-apps-check (4): (fail) queued and steering prompts > the queue takes its own place in the stack: nothing is cut off or drawn over [1331.67ms]
web / react-apps-check (2): (fail) the strip or queue and the card meet square in one rim, and the queue keeps room above [6083.35ms]

Not re-run automatically: web / react-apps-check (1), web / react-apps-check (3), web / react-apps-check (4), web / react-apps-check (2), 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 72c9e93; does not block
red: web / react-apps-check; base red: the same failure on the base 72c9e93; does not block
red: web / react-apps-check (1); NEW: - [] + [ + "press ArrowUp: layout shift 0.0002 (limit 0)", + "press ArrowDown: layout shift 0.0002 (limit 0)", + "type "draft": layout shift 0.0002 (limit 0)", (+1 more) is not red on the base 72c9e93; do not merge until green; see lane-rules
red: web / react-apps-check (2); NEW: Expected: "rgb(156, 162, 189)" Received: "rgb(125, 129, 153)" at <anonymous> (/home/runner/_work/cmux/cmux/webviews/test/quiet-access-chip.test.ts:103:29) (+5 more) is not red on the base 72c9e93; do not merge until green; see lane-rules
red: web / react-apps-check (3); NEW: - [] + [ + "type "mail me@rea": layout shift 0.0002 (limit 0)", + ] - Expected - 1 + Received + 3 at <anonymous> (/home/runner/_work/cmux/cmux/webviews/test/com (+5 more) is not red on the base 72c9e93; do not merge until green; see lane-rules
red: web / react-apps-check (4); NEW: Expected: "Do anything" Received: "Type / for commands" at <anonymous> (/home/runner/_work/cmux/cmux/webviews/test/composer-suggested-prompt.test.tsx:206:19) (+7 more) is not red on the base 72c9e93; do not merge until green; see lane-rules

CI fast guards failed on 578c29cbc0 (https://github.com/manaflow-ai/cmux/actions/runs/39553495850). It does not block the merge; a red guard merged into main breaks it for every open PR.
The log named no failed step; see the run.

Agents: python3 scripts/ci/guard_attribution.py fix applies the mechanical fixes locally.

Tour of 578c29cbc0 (run): no media. The tour did not run: only webview code changed (12 path(s)), which the gallery advisory run checks in Linux Chromium on the pull request (its artifact holds any captures); add the media-tour-mac label to tour it on a Mac.

[teamleaderleo]

cmux-next guards / defaults-snapshot is red on 24 of 24 fresh feat-cmux-next PR heads in the last 2:00:00, so it is most likely a base red, not this PR's. The base-reds lane has it; a base merge picks up the fix once it lands.

[teamleaderleo]

Bead cx-vld05 created for this PR by the cmux coordinator.

[blacksmith-sh]

Found 24 test failures on Blacksmith runners:

Failures

Test	View Logs
test/agent-pane-column-edges.test.ts/agent-pane-column-edges.test	View Logs
test/agent-pane-column-edges.test.ts/agent-pane-column-edges.test	View Logs
test/agent-pane-mermaid.test.tsx/agent-pane-mermaid.test.tsx	View Logs
test/agent-pane-mermaid.test.tsx/agent-pane-mermaid.test.tsx	View Logs
test/agent-pane-no-capsules.test.ts/agent-pane-no-capsules.test	View Logs
test/agent-pane-no-capsules.test.ts/agent-pane-no-capsules.test	View Logs
test/agent-pane-queue-steer.test.ts/agent-pane-queue-steer.test	View Logs
test/agent-pane-queue-steer.test.ts/agent-pane-queue-steer.test	View Logs
test/agent-pane-stream-jitter.test.ts/agent-pane-stream-jitter.test	View Logs
test/agent-pane-stream-jitter.test.ts/agent-pane-stream-jitter.test	View Logs

...and 14 more test failures. View all on Blacksmith

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[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.3955987471201 (03960f5a64)
• cmux NEXT nightly 1.0.0-nightly.3956132659001 (233cc81754)