[teamleaderleo]

Leo's exact words: "ACPMUX daemons, peer routing and messaging across machines."

A daemon restart can interrupt a turn after its agent host has exited. Before this change, acpmux marked that turn outcome_unknown and immediately ran prompts queued behind it, leaving the interrupted work idle until a person typed “continue”.

This PR makes the restart recovery resume the interrupted turn first:

• During log recovery, append one idempotent continuation before the outcome_unknown result. The continuation uses the cut prompt's next attempt id (<prompt>~resume-<n>), quotes the original prompt and steers, and records _meta.provenance.kind=auto_resume with reason=daemon_restart.
• Restore it through the ordinary durable queue and move it to the head, including the crash window before queue_order is written. Prompts queued behind the cut turn remain behind it and each runs once.
• Preserve the cut turn's control, trust gate, and kept prompt images. A Web steer keeps the resumed turn in Web control and re-enters the folder trust gate.
• Respect autoResumeDelaysMs: [] and stop a restart chain after the existing four-attempt bound.

Leo's call is limited to daemon restart recovery; the daemon update schedule and trigger remain in #23199.

Changelog

Fixed: acpmux resumes a turn interrupted by a daemon restart before running prompts queued behind it.

Verification

• Hosted focused verification run 40017332381 on exact head 598b2a5b4bc5b229b3fdf56f0ca3882e642ce178: selected durable-agent test, Rust MSRV, Go pane, and daemon artifact jobs passed.
• Hosted Linux/macOS clippy failures are base-red: both report the unrelated base file cmux-tui/crates/cmux-tui-core/src/mux/resource_topology/creation_settlement.rs:35, which this PR does not touch.
• Local rustfmt --edition 2024 --check and git diff --check pass. Native app builds were not run locally.

Risk: risk:normal.

Agent session: huge-blue

[teamleaderleo]

Owned by cx4-au23921 on huge-blue

[github-actions]

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

Review 4302410: 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=pr23921 -f ref=cmux/acpmux-restart-resumes -f platform=macos -f backend_mode=local

web and size checks: green

[teamleaderleo]

Bead cx-04l0b created for this PR by the cmux coordinator.

[blacksmith-sh]

Found 13 test failures on Blacksmith runners:

Failures

Test	View Logs
/tmp/tmpgz3okmn2/summary-missing.json (live):/summary-missing.json (live):	View Logs
/tmp/tmpmps5btbc/summary-fail.json (live):/summary-fail.json (live):	View Logs
[tabs] debug.tab_switch timed 0 of 40 switches/ [tabs] debug.tab_switch timed 0 of 40 switches	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
[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_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
test_targets_outside_the_app_go_to_the_mac_canary (main.SwiftCanaryFleetCoverage.te st_targets_outside_the_app_go_to_the_mac_canary)/ test_targets_outside_the_app_go_to_the_mac_canary (main.SwiftCanaryFleetCoverage.te st_targets_outside_the_app_go_to_the_mac_canary)	View Logs

...and 3 more test failures. View all on Blacksmith: run 40020181944, run 40020181945, run 40020181951

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

[teamleaderleo]

Orphaned: no activity for 13 h, and no lane holds a lease on it. Adopted by the orphan sweep: merged feat-cmux-next in at 931e627. A later pass queues it for the merge hub if it is reviewed, small and red only on base reds.

[teamleaderleo]

cmux-next guards / tooling-tests is red on 17 of 17 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]

rust workspaces / plan (changed Cargo workspaces) is red on 16 of 16 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]

Orphaned: no activity for 54 h, and no lane holds a lease on it. The orphan sweep could not merge feat-cmux-next in: conflicts in cmux-tui/crates/acpmux/src/hub/prompt_images.rs. Listed for a lane to resolve.

[teamleaderleo]

cmux-next fast gates / post cmux-next/fast-gates is red on 14 of 20 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]

cmux-next fast gates / post cmux-next/fast-gates is red on 15 of 20 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]

high-signal review link / link is red on 21 of 22 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.

[github-actions]

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4031371403702 (1dc93b2657)