cmux-next sidebar: opt-in tab counts and a per-workspace tabs chevron by teamleaderleo · Pull Request #17520 · manaflow-ai/cmux

teamleaderleo · 2026-10-06T04:13:22Z

Two sidebar options, both off by default, so nothing changes until someone turns them on.

sidebar.showCounts (Show Tab Counts), new: each workspace row shows how many tabs it has.
sidebar.showWorkspaceTabs (Show Workspace Tabs, from cmux-next: add sidebar workspace groups and tab rows #17186) now gives each workspace row a chevron. Tabs stay listed by default, and the chevron hides or lists one workspace's tabs and chats. This replaces the separate sidebar.nestedTabs key from the first version of this PR: one nested-view setting, not two.

Both controls follow the Stability rule. They sit in fixed slots at the row's trailing edge and are drawn whenever their setting is on, never on hover, so the hover close button and the unread badge don't move them. The count slot fits two digits, so going from 9 to 10 tabs doesn't shift the title. A workspace with no tabs keeps the chevron's slot, just empty. Which workspaces are collapsed is window view state and isn't saved yet.

Testing

SidebarWorkspaceTabsTests (layout and model) and countsAreOptIn / nestedTabsIsNotASecondKey (settings) were committed before each change and fail on those commits. With the change they run in this PR's cmux-next swift test job.
The settings schema, MDM manifest and docs were regenerated from the package's export tests on a fleet Mac. The Settings page strings and bundle were rebuilt with gen-strings.mjs and build-pages-web.sh.
Localization: 5 new keys (3 sidebar, 2 settings), each with all 21 catalog locales. localization_catalog.py check reports nothing for them.
Fleet build captures are in a comment. They're from the first version (count plus chevron); the chevron now starts expanded under showWorkspaceTabs.

Changelog

Added: opt-in sidebar tab counts (sidebar.showCounts), and a per-workspace chevron to hide or list tabs when sidebar.showWorkspaceTabs is on.

🤖 Generated with Claude Code

coderabbitai · 2026-10-06T04:13:30Z

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github-actions · 2026-10-06T04:17:20Z

Not verified: macOS jobs did not run: compile and app tests were skipped on 0a6732b548; ci-status is green without them.

CI passes on 0a6732b548 (run 37501326274 attempt 2).
macOS jobs did not run: compile and app tests were skipped: Fast static checks skipped (the macos job needs both to succeed). Re-run CI once they pass, before merging.

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.

teamleaderleo · 2026-10-06T04:45:47Z

Captures from a fleet build of this branch on a capture Mac.

Default ({}): unchanged, no count and no disclosure.

{"sidebar":{"nestedTabs":true,"showCounts":true}}: the workspace row shows its tab count and a chevron in fixed trailing slots.

After clicking the chevron, the workspace's tabs list inline beneath it.

teamleaderleo · 2026-10-06T15:17:10Z

Batch queue: dropped from batch next-batch/20261006 (feat-cmux-next 7cf558be8de1), conflict with feat-cmux-next.

Packages/macOS/CmuxNext/Sources/CmuxNextSettings/SidebarSectionsSetting.swift: both sides changed it

Next: merge feat-cmux-next, resolve, push.

cursor · 2026-10-06T15:20:15Z

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cursor · 2026-10-06T15:21:06Z

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sidebar.showWorkspaceTabs (#17186) already lists tabs inline, so the disclosure collapses them per workspace instead of a second sidebar.nestedTabs key. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…hevron With sidebar.showWorkspaceTabs on, each workspace row gets a chevron that collapses or expands its tabs. sidebar.showCounts (default off) shows a workspace's tab count in a fixed trailing slot. Settings artifacts are carried over from the previous base and regenerated next. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

The list's model-derived layout options come from SidebarModel.listOptions(). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…undle on the new base Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

teamleaderleo · 2026-10-06T15:45:28Z

Batch queue: pushed bun run check:fix output (web formatting and lint autofix) to this branch; landing once its checks rerun.

teamleaderleo · 2026-10-06T15:45:30Z

Batch queue: green. Batch stack 87bf7dcfd4d7 on feat-cmux-next 7d209e8ddbed with #17520 #17534 #17541 #17551 #17552 #17558 #17582. Fleet production build: job 3b88261eeebcf0f42557a5e7 (cmux-ci artifact 3b88261eeebcf0f42557a5e7 (job 3b88261eeebcf0f42557a5e7, tag nb-local-20261006-153816-1)). heavy tier did not run on this branch (run); your PR's own checks are the tests. Validated this PR at 426a6aae73d1.

Next: land it yourself with gh-merge-green on this receipt.

teamleaderleo · 2026-10-06T16:16:41Z

Batch queue: green. Batch stack c03ab5ca52f8 on feat-cmux-next 3892c6ce7b55 with #17520 #17527 #17534 #17537 #17541 #17542 #17551 #17552 #17553. Fleet production build: job d1e25b8a9144e8ef3ef2287e (cmux-ci artifact d1e25b8a9144e8ef3ef2287e (job d1e25b8a9144e8ef3ef2287e, tag nb-local-20261006-160146-1)). heavy tier did not run on this branch (run); your PR's own checks are the tests. Validated this PR at dd441f27f892.

Next: land it yourself with gh-merge-green on this receipt.

…ebar-merge-nested

…ebar-merge-nested # Conflicts: # schemas/settings/settings-schema.json

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ebar-merge-nested

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

teamleaderleo · 2026-10-06T17:51:11Z

Batch queue: green. Batch stack 56c6a0b1db91 on feat-cmux-next f297f960ba8a with #17520 #17534 #17551 #17597 #17598 #17599 #17601. Fleet production build: job 00cd9db56f0260ac9f85330a (cmux-ci artifact 00cd9db56f0260ac9f85330a (job 00cd9db56f0260ac9f85330a, tag nb-local-20261006-173318-1)). heavy tier did not run on this branch (run); your PR's own checks are the tests. Validated this PR at 0a6732b548af.

Next: land it yourself with gh-merge-green on this receipt.

teamleaderleo mentioned this pull request Oct 6, 2026

ci(cmux-next): implicit batch queue for feat-cmux-next #17535

Merged

teamleaderleo changed the title ~~cmux-next sidebar: opt-in tab counts and expandable workspaces~~ cmux-next sidebar: opt-in tab counts and a per-workspace tabs chevron Oct 6, 2026

teamleaderleo force-pushed the op-next-sidebar-merge-nested branch from fabcf11 to 91b1f15 Compare October 6, 2026 06:32

teamleaderleo mentioned this pull request Oct 6, 2026

cmux-next: sidebar items, headers and listed tabs draw registry icons at row size #17558

Merged

2 tasks done

teamleaderleo force-pushed the op-next-sidebar-merge-nested branch from 91b1f15 to 7ff9780 Compare October 6, 2026 15:20

teamleaderleo and others added 5 commits October 6, 2026 08:25

test(cmux-next): put the workspace tab disclosure on showWorkspaceTabs

c84a6df

sidebar.showWorkspaceTabs (#17186) already lists tabs inline, so the disclosure collapses them per workspace instead of a second sidebar.nestedTabs key. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

chore(cmux-next): regenerate settings artifacts for sidebar.showCounts

a04b4d0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

chore(cmux-next sidebar): keep SidebarListView under the god-type limit

7c3a721

The list's model-derived layout options come from SidebarModel.listOptions(). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

chore(cmux-next): regenerate settings schema, MDM docs and Settings b…

426a6aa

…undle on the new base Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

teamleaderleo force-pushed the op-next-sidebar-merge-nested branch from 391ddae to 426a6aa Compare October 6, 2026 15:25

next-batch: regenerate webviews formatting

dd441f2

This was referenced Oct 6, 2026

cmux-next: size the composer plus menu to content #17534

Merged

cmux-next: one model picker, a clickable context ring and an aligned composer footer #17537

Merged

cmux-next sidebar: headers keep their layout on hover #17591

Merged

teamleaderleo added 2 commits October 6, 2026 09:28

Merge remote-tracking branch 'origin/feat-cmux-next' into op-next-sid…

cd59b84

…ebar-merge-nested

Merge remote-tracking branch 'origin/feat-cmux-next' into op-next-sid…

1b30e99

…ebar-merge-nested

teamleaderleo requested a review from lawrencecchen as a code owner October 6, 2026 16:41

teamleaderleo and others added 4 commits October 6, 2026 09:59

Merge remote-tracking branch 'origin/feat-cmux-next' into op-next-sid…

873ad85

…ebar-merge-nested # Conflicts: # schemas/settings/settings-schema.json

cmux-next sidebar: regenerate settings artifacts on the new base

058f6da

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge remote-tracking branch 'origin/feat-cmux-next' into op-next-sid…

a2b048b

…ebar-merge-nested

cmux-next sidebar: rebuild settings page on the new base

0a6732b

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

teamleaderleo mentioned this pull request Oct 6, 2026

cmux-next: showcase capture calls the app socket and leaves Home before seeding #17594

Merged

teamleaderleo merged commit 9872eec into feat-cmux-next Oct 6, 2026
91 of 94 checks passed

teamleaderleo deleted the op-next-sidebar-merge-nested branch October 6, 2026 18:08

teamleaderleo mentioned this pull request Oct 6, 2026

cmux-next CI: run OmnibarFieldEditorTests in the isolated field-editor step #17626

Merged

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cmux-next sidebar: opt-in tab counts and a per-workspace tabs chevron - #17520

cmux-next sidebar: opt-in tab counts and a per-workspace tabs chevron#17520
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