[teamleaderleo]

Fixes #4303

“the palette UI is invoked, but the next character typed lands in the terminal ... not the palette text field.”

The palette's detached panel can attach its content before it becomes key. The query field now registers itself as the panel's initialFirstResponder, clears the previous window registration when detached, and the panel re-focuses the field from its becomeKey seam after the key-window handoff. Cmd-P and Cmd-Shift-P therefore keep subsequent typing in the palette query.

Tests:

• python3 scripts/cmux-next/prepush-gate.py (pass: no new violations)
• Fleet focused suite: the prior queued step was cancelled when its head was superseded; final-head CI is running on e9e5ca5675c4d426d80557fe7ccb41c6a0703e25.
• No native build or test run on Big Red; native verification is on the fleet.

Changelog: Cmd-P and Cmd-Shift-P now focus the palette query field reliably during detached panel key-window handoff.

No capture: behavior-only responder handoff; there is no visual-state change, and PaletteFocusTests covers attach, replacement, and detach responder ownership. The native key-window handoff remains fleet/CI verified.

Base: fabbd7139acdc4413a35532898f416a10291f0b4
Head: 58cd2a8d52b6130acc31cae9fb525de709122805

Agent session: big-red

[github-actions]

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

Review 9bbf92a: 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=pr24814 -f ref=nx-4303 -f platform=macos -f backend_mode=local

red: cmux-next checks (god files, concurrency, crash safety, l10n); base red: the same failure on the base e0bb2a8; does not block

Tour of c112d24d3f (run)

The path-selected recorder failed for core-after, core-before; see the run artifact and failed manifests.

Path-selected interactions

Interaction	Changed paths
core	Packages/macOS/CmuxNext/Sources/CmuxNextPalette/PaletteController.swift Packages/macOS/CmuxNext/Sources/CmuxNextPalette/PalettePanel.swift Packages/macOS/CmuxNext/Sources/CmuxNextPalette/PaletteSearchField.swift Packages/macOS/CmuxNext/Tests/CmuxNextPaletteTests/PaletteFocusTests.swift

Core UI (before): FAILED — 16 ok, 3 failed, 1 unavailable

Video (mp4)

#	Step	Result	Command
1	Launch	ok
2	New workspace	ok	cmux workspace new --name Tour
3	Type in the terminal	ok	cmux workspace name:Tour screen current pane current tab current terminal current write --text "echo hello from the cmux-next tour\r"
4	A command reports progress: tab loading spinner	ok	cmux workspace name:Tour screen current pane current tab current terminal current write --text "clear; printf '\\033]9;4;3\\007'; sleep 900\r"
5	Split right	failed: exited 1	cmux action run splitRight
6	Split down	failed: exited 1	cmux action run splitDown
7	New terminal tab	failed: exited 1	cmux action run newSurface
8	Browser tab	ok	cmux tab new-browser --url https://example.com
9	Hide the sidebar	ok	cmux action run toggleSidebar
10	Show the sidebar	ok	cmux action run toggleSidebar
11	Notification	ok	cmux notify --title Tour --body "Hello from CI"
12	Notifications panel	ok	cmux action run showNotifications
13	Agent chat	ok	cmux agent new-chat
14	Agent workspace	ok	cmux workspace new --name Agent
15	Agent starts	ok	cmux workspace name:Agent screen current pane current tab current terminal current write --text "clear; printf '\\033]7501;state=working\\033\\\\'; sleep 8; printf '\\033]7501;state=done\\033\\\\'; sleep 900\r"
16	An agent works: row working spinner	ok	cmux workspace new --name Notes
17	The agent finishes: done mark in the spinner's place	ok
18	Session tree: keycaps on the first rows	ok	cmux settings set sidebar.sessionTree true
19	Session tree back off for later tours	ok	cmux settings set sidebar.sessionTree false
20	Profile menu	unavailable: exited 1 (the menu shot needs a screen capture route)	cmux action run sidebar.profileMenu

Failed steps:

5. Split right


6. Split down


7. New terminal tab

Screenshots (12)

1. Launch


2. New workspace


3. Type in the terminal


4. A command reports progress: tab loading spinner


8. Browser tab


9. Hide the sidebar


11. Notification


12. Notifications panel


13. Agent chat


16. An agent works: row working spinner


17. The agent finishes: done mark in the spinner's place


18. Session tree: keycaps on the first rows

### Core UI \(after\): FAILED — 16 ok, 3 failed, 1 unavailable

Video (mp4)

#	Step	Result	Command
1	Launch	ok
2	New workspace	ok	cmux workspace new --name Tour
3	Type in the terminal	ok	cmux workspace name:Tour screen current pane current tab current terminal current write --text "echo hello from the cmux-next tour\r"
4	A command reports progress: tab loading spinner	ok	cmux workspace name:Tour screen current pane current tab current terminal current write --text "clear; printf '\\033]9;4;3\\007'; sleep 900\r"
5	Split right	failed: exited 1	cmux action run splitRight
6	Split down	failed: exited 1	cmux action run splitDown
7	New terminal tab	failed: exited 1	cmux action run newSurface
8	Browser tab	ok	cmux tab new-browser --url https://example.com
9	Hide the sidebar	ok	cmux action run toggleSidebar
10	Show the sidebar	ok	cmux action run toggleSidebar
11	Notification	ok	cmux notify --title Tour --body "Hello from CI"
12	Notifications panel	ok	cmux action run showNotifications
13	Agent chat	ok	cmux agent new-chat
14	Agent workspace	ok	cmux workspace new --name Agent
15	Agent starts	ok	cmux workspace name:Agent screen current pane current tab current terminal current write --text "clear; printf '\\033]7501;state=working\\033\\\\'; sleep 8; printf '\\033]7501;state=done\\033\\\\'; sleep 900\r"
16	An agent works: row working spinner	ok	cmux workspace new --name Notes
17	The agent finishes: done mark in the spinner's place	ok
18	Session tree: keycaps on the first rows	ok	cmux settings set sidebar.sessionTree true
19	Session tree back off for later tours	ok	cmux settings set sidebar.sessionTree false
20	Profile menu	unavailable: exited 1 (the menu shot needs a screen capture route)	cmux action run sidebar.profileMenu

Failed steps:

5. Split right


6. Split down


7. New terminal tab

Screenshots (7)

1. Launch


2. New workspace


3. Type in the terminal


4. A command reports progress: tab loading spinner


8. Browser tab


9. Hide the sidebar


11. Notification

_{Tours are data in scripts/cmux-next/media/tours: add a step or a tour file to show your feature.}

[blacksmith-sh]

Found 12 test failures on Blacksmith runners:

Failures

Test	View Logs
/tmp/tmpojjcylr0/summary-missing.json (live):/summary-missing.json (live):	View Logs
/tmp/tmpxteuwo86/summary-fail.json (live):/summary-fail.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
convention violations found (ERROR lines above)./ convention violations found (ERROR lines above).	View Logs
test_base_passes (main.NoticesPairTests.test_base_passes)/ test_base_passes (main.NoticesPairTests.test_base_passes)	View Logs
test_bot_attempt_three_drops_stale_owned_pool_placement (main.PathRoutingStructure. test_bot_attempt_three_drops_stale_owned_pool_placement)/ test_bot_attempt_three_drops_stale_owned_pool_placement (main.PathRoutingStructure. test_bot_attempt_three_drops_stale_owned_pool_placement)	View Logs
test_notices_for_another_ghostty_next_commit_fail (main.NoticesPairTests.test_notic es_for_another_ghostty_next_commit_fail)/ test_notices_for_another_ghostty_next_commit_fail (main.NoticesPairTests.test_notic es_for_another_ghostty_next_commit_fail)	View Logs

...and 2 more test failures. View all on Blacksmith: run 40075725231, run 40075725046

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

[teamleaderleo]

Bead cx-gn1kz created for this PR by the cmux coordinator.

[teamleaderleo]

Review (independent Codex xhigh): SHIP at 9bbf92a621897835b5bce69c4d4ac9a4819fa6d2

Session receipt: review-nx-4303-final (Codex xhigh, read-only) reviewed the exact diff against base da29053203f0778fa982e9c86adc0ca3927c9aae; no P0-P3 findings. It verified initial-responder cleanup/registration, the PalettePanel key-transition focus callback, controller wiring, and the focused regression test.

Test coverage note: PaletteFocusTests directly covers initial-responder registration; detach cleanup and full becomeKey/controller integration are covered by the source trace but not exercised as separate test cases (non-blocking).

[teamleaderleo]

Review (independent Codex xhigh): SHIP at 58cd2a8d52b6130acc31cae9fb525de709122805

Session receipt: review-nx-4303-final2 (Codex xhigh, read-only) reviewed the exact four-file diff against base fabbd7139acdc4413a35532898f416a10291f0b4; no P0-P3 findings. It verified that responderWindow clears only its own old initial responder, replacement attachment takes over safely, detaching the replacement clears it, and the PalettePanel.becomeKey() callback is wired through the controller.

The regression test now covers attach -> replacement -> detach responder ownership. No native build/test was run by the reviewer; fleet/CI remains the native verification path.

[teamleaderleo]

Ready-to-land handoff at exact head 58cd2a8d52b6130acc31cae9fb525de709122805 (base judged by CI: fabbd7139acdc4413a35532898f416a10291f0b4).

• Independent and primary reviews: SHIP; latest independent receipt review-nx-4303-final2.
• prepush-gate and git diff --check: pass; app compile and cmux-next fast tier: SUCCESS.
• cmux-next crash-class rules and release-notary are base-owned failures unrelated to this four-file diff.
• High-signal review-line update is metadata-only; its owning job failed twice on installation HTTP 403 rate limiting while patching the status comment, with no source failure.

The ready-to-land label is now applied for normal pinned squash landing; no admin or override was used.

[teamleaderleo]

reviewed 58cd2a8; c112d24 adds only a base update.

Verification: git range-diff 106952416560b52a1286c48108d9fe67f22121b6..58cd2a8d52b6130acc31cae9fb525de709122805 1268d987d21abb94bb8227aa0ea69da802c982b0..c112d24d3fc0938bfed5ad53d8a96c608530f1bf maps the reviewed commit exactly (=); the combined merge diff has no conflict-resolution entries in the palette files.

[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4009633177301 (812000d772)
• cmux NEXT nightly 1.0.0-nightly.4009794369001 (9287623e69)