[teamleaderleo]

ACP Inspector errors now follow the shared failure palette independently of the diff colour setting. Its hover fills use the required base theme token, and destructive menu items use host or agent danger colours with a readable foreground fallback before a theme arrives.

Leo (2026-10-29): “I think you guys should just keep going indefinitely. Like just, there's so much random nonsense that you can probably associate every single one of his pointers to one of our situations.” Earlier: “https://aiforui.dev/learn ... you guys should be taking this course and then reading into how it goes.”

Course item 14: use semantic colours so light, dark and custom themes share the same status meaning.

File:line	Rule	Before	After
webviews/src/agent-session/acpmux/Inspector.css:50,153	Semantic error status	Diff deletion palette plus a local hex fallback	Shared failure palette
webviews/src/agent-session/acpmux/Inspector.css:84,120	Semantic hover	Shared token plus duplicate white RGBA fallbacks	Shared control-hover token
webviews/src/ui/ui.css:122	Semantic destructive action	Unthemed foreground mixed with a local red literal	Host danger, agent danger, then semantic foreground

Overlap checked across 667 open PRs: #27343 touches a disjoint toolbar hunk in ui.css; Inspector.css has no overlap.

Risk: Inspector error colour now follows status rather than diff preferences. There are no new timers or animations.

Observed / Not run

Observed: full webviews lint/type/protocol checks and static pre-push gate pass. Regression and gallery fixture were committed before the fix at 9f280fd.

Remote Chromium red/green validation passed at d25d1a4 (run): all six light/dark tests pass on head. Restoring the original production CSS produces four expected failures (status palette and unthemed destructive colour in both themes); both hover-preservation tests pass on both versions. Before/after captures, visual UI review and independent review are pending.

Changelog

Fixed: ACP Inspector errors follow the theme's failure colour independently of diff colours.

Agent session: agent session

[blacksmith-sh]

Found 25 test failures on Blacksmith runners:

Failures

Test	View Logs
/tmp/tmp2c5owuqw/summary-fail.json (live):/summary-fail.json (live):	View Logs
/tmp/tmpbb_1trwo/summary-missing.json (live):/summary-missing.json (live):	View Logs
[new_workspaces] debug.new_workspace timed 0 of 50 new workspace rows/ [new_workspaces] debug.new_workspace timed 0 of 50 new workspace rows	View Logs
[new_workspaces] the window draws no frames/[new_workspaces] the window draws no frames	View Logs
[tabs] debug.tab_switch timed 0 of 40 switches/ [tabs] debug.tab_switch timed 0 of 40 switches	View Logs
[tabs] the window draws no frames/[tabs] the window draws no frames	View Logs
src/pages/settings/chiefLook.test.tsx/chiefLook.test.tsx	View Logs
src/pages/settings/chiefLook.test.tsx/chiefLook.test.tsx	View Logs
src/pages/settings/themePane.test.tsx/themePane.test.tsx	View Logs
src/pages/settings/themePane.test.tsx/themePane.test.tsx	View Logs

...and 15 more test failures. View all on Blacksmith: run 40958674138, run 40958674065

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

[github-actions]

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

Review d25d1a4: 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=pr27613 -f ref=lane/aiforui-semantic-colours-1029 -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 d25d1a4aea (run 40958674138 attempt 1): 1 code, 1 unknown.

Job	Verdict	Why
web / react-apps-base-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 chiefLook.test.tsx search renders Bubble Style in the Look card: failed (job)
• seen on other PRs themePane.test.tsx the Theme page draws each theme key once, in one card, with no second App Theme group: failed (job)
• seen on other PRs bare-ref-repo.test.tsx an agent's message: its own address names the repository of its bare #N: failed (job)
• seen on other PRs classic-new-tab-trust.test.tsx a start refused after a while keeps the prompt ahead of what was typed in the composer meanwhile: failed (job)
• seen on other PRs clickable-cursor.test.ts no stylesheet sets the arrow or auto on a clickable element: failed (job)
• seen on other PRs markdown-table-obsidian.test.ts markdown tables (webkit) > a drag across cells selects text from the press to the pointer, not whole...: failed (job)
• 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 reasoning-own-control.test.ts New Tab at 760 px: the model button opens its menu, whose Effort row lists live levels: failed (job)

Matched log lines

web / react-apps-base-check (2): (fail) search renders Bubble Style in the Look card [4014.81ms]

Not re-run automatically: web / react-apps-base-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: cmux-next checks (god files, concurrency, crash safety, l10n); base red: the same failure on the base 4d84096; does not block

Gallery before/after for d25d1a4: 16 states rendered, 4 images differ, 1938 more touched states not rendered. Images are in the run's artifact, not on this public PR.

gh run download 40960214528 -R manaflow-ai/cmux -n gallery-advisory-27613-d25d1a4aea59d4015cd9b07617b1f1e5fb95dce0 (then read gallery-review.json)

States

State	Theme	Status	Diff	Picked by
agent-pane.inspector/chat-menu	Apple System Colors Light	unchanged	0%	own Inspector.css
agent-pane.inspector/chat-menu	Apple System Colors	unchanged	0%	own Inspector.css
agent-pane.inspector/wire-log	Apple System Colors	changed	0.0306%	own Inspector.css
agent-pane.inspector/wire-log	Apple System Colors Light	changed	0.0211%	own Inspector.css
agent-pane.inspector-colours/errors	Apple System Colors Light	new	0%	own Inspector.css
agent-pane.inspector-colours/errors	Apple System Colors	new	0%	own Inspector.css
pages.agent-activity/empty	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/empty	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/split	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/split	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/split-earlier-frame	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/split-earlier-frame	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/split-no-frames	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/split-no-frames	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/timeline	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/timeline	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/grid	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/grid	Apple System Colors	unchanged	0%	own ui.css
pages.agent-activity/grid-viewer	Apple System Colors Light	unchanged	0%	own ui.css
pages.agent-activity/grid-viewer	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/normal	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/normal	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/channel	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/channel	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/thread	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/thread	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/thread-long	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/thread-long	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/switcher	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/switcher	Apple System Colors	unchanged	0%	own ui.css
pages.home-channels/switcher-filtered	Apple System Colors Light	unchanged	0%	own ui.css
pages.home-channels/switcher-filtered	Apple System Colors	unchanged	0%	own ui.css

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

[teamleaderleo]

Review (codex-review-box/gpt-6-astra high, lane-place): SHIP at d25d1a4

SHIP

No findings.

[cmux-bot]

cmux-bot approves d25d1a4: an independent review passed this exact head (review box review-27613-semantic-colours receipt by teamleaderleo). A push needs a new review; a later BLOCK at this head dismisses this approval.

[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4097315842701 (e398df3e74)
• cmux NEXT nightly 1.0.0-nightly.4097386595501 (eb8105b074)
• cmux NEXT nightly 1.0.0-nightly.4097664234401 (167472006a)