[teamleaderleo]

Fix-forward for the Release compile red on feat-cmux-next since f0db136 (#33578).

cmux-next Release compile (Xcode 26), the fleet Release compile and status / cmux-next/compile fail at f0db136 with:

Packages/macOS/CmuxNext/Sources/CmuxNextSidebar/Logic/GroupJoinHold.swift:85:2: error: cannot use protocol 'Observable' in a public or '@usableFromInline' conformance; 'Observation' was not imported publicly (in macro expansion @Observable:1:50)

GroupJoinRows is a public @Observable class, so the file has to import Observation publicly. SidebarDocStore.swift in the same module already does this. This PR changes one line, import Observation → public import Observation. #33578's fix stays in.

Risk: low. The change is one import's access level and changes no behavior.

Changelog: none.

Agent session: agent session

🤖 Generated with Claude Code

[github-actions]

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

Review 142a82d: 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=pr33680 -f ref=lane/release-compile-red -f platform=macos -f backend_mode=local

red: cmux-next checks (god files, concurrency, crash safety, l10n); no finished base run on 2181a86 to compare; do not merge until green; see lane-rules

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4162918426201 (6a1595932a)
• cmux NEXT nightly 1.0.0-nightly.4163036887701 (4a7a84507f)
• cmux NEXT nightly 1.0.0-nightly.4163148939801 (96eb1b98d7)

[teamleaderleo]

Review (subagent claude-sonnet-5-5): SHIP at 88a8301

Visual verdict: unchanged by this diff (a revert to the code before #33578).

Checked that the diff is the exact inverse of f0db136 and touches the same 6 files and no others. Nothing on base still references the removed symbols, and PendingWorkspaceRows.removing is restored where it is called.

Follow-ups: none.

[teamleaderleo]

Review (subagent claude-sonnet-5-5): SHIP at b63633b

Visual verdict: unchanged by this diff (one import access level, no UI change).

CmuxNextSidebar builds with InternalImportsByDefault, so a public @observable class needs public import Observation, as SidebarDocStore.swift already has. The file's public API uses only stdlib and same-module types, so no second error is waiting behind this one.

Follow-ups: none.

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[teamleaderleo]

Review (subagent claude-sonnet-5-5): SHIP at 142a82d

Visual verdict: unchanged by this diff.

Same tree as b63633b, which got a SHIP (git diff b63633bed042 142a82d08827 is empty). Only the commit message changed, to add the Sidebar-Look: no visual change trailer the prepush gate asks for.

Follow-ups: none.

[blacksmith-sh]

Found 1 test failure on Blacksmith runners:

Failure

Test	View Logs
test_every_compile_job_names_its_warm_sources (main.ThisTree.test_every_compile_job _names_its_warm_sources)/ test_every_compile_job_names_its_warm_sources (main.ThisTree.test_every_compile_job _names_its_warm_sources)	View Logs

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