[teamleaderleo]

Summary

Leo, 2026-11-03, on a chat that read "Thinking 7m 49s": "i feel like this mac session just keeps "thinking" but idk if tool calls are somehow being hidden or if that workspace itself/session itself under acpmux is kinda weird".

The chat was not thinking. Its model gateway was down, and Claude Code was retrying the request (system/api_retry, attempt 1..10, error_status, error, about 75 s apart). acpmux logged those lines but nothing the pane reads said so, so the live line kept reading "Thinking" with a clock that counted the retries.

• acpmux (hub/turn_retry.rs): each harness retry of a failed model request logs a mux record turn_retrying {turnId, attempt, maxRetries, error, errorStatus, retryDelayMs, source}. Sources: Claude Code's system/api_retry line and Codex's session_info_update._meta.codex.error with willRetry ("Reconnecting... 2/5", HTTP status from codexErrorInfo). It is in the transcript category, so clients get it with no new subscription. The turn is marked silent, so the model's next sign logs turn_heard, which ends the retry. Documented in the README and docs/acpmux-schema.json.
• Agent pane: direct.ts keeps the retry on a client-only TURN_RETRY row (kind typing, drawn by nothing). turns.ts withRetry puts it on the live line, and Thinking.tsx then reads "Can't reach the model · retrying (7 of 10) · 503 server error", or "The model is busy" for 429/529 and rate-limit or overload errors. It is calm: no shimmer, no clock, the cause in text ink and the count and error muted, with the error the part that truncates. It uses the same .cv-worked box, so nothing moves when it starts or ends. Once the model answers, the retries' time comes off the "Thinking" clock (before the first output, the clock times the turn from its prompt).
• Given up: a retry that runs out still ends the turn failed, shown on the existing turn error card with Retry ("API Error: Connection error." reads as unreachable). That needed no change; the gallery shows it.
• The iPhone app already reads claude.system.api_retry ("Retrying (2 of 10, error 503)"), so this adds no parity gap.

Gallery: agent-pane.turn-retry, with variants retrying, retrying-with-error, retrying-busy and given-up. The mock daemon has the live scene at ?mock&session=mock-model-retry (seven turn_retrying records).

Testing

• acpmux, on fleet cmux-ci test (Linux): cargo clippy -p acpmux --all-targets -D warnings is clean. cargo test -p acpmux --lib turn_retry (3 unit tests) passes. --test claude_stream_timing passes; its new a_claude_api_retry_logs_turn_retrying_until_the_model_answers uses fake Claude's api-retry-probe. --test hub_integration -- retry silent passes 44 tests, including the Codex retry test, which now asserts turn_retrying comes before turn_heard, which comes before the redelivered answer. cargo fmt was fixed in the second commit.
• Webviews: turnRetry.live.test.ts feeds real records through AcpmuxDirectClient over the mock socket and checks the retry row, the retry time, and the cleanup at turn end. It also covers withRetry and retryParts. test/transcript-turn-retry.test.tsx renders the gallery snapshots through turnView and Thinking.

Observed / Not run

• Observed: the Rust results above. The webview run's results are posted as a comment.
• Not run: a tagged DEV build against a real failing gateway.

Changelog

Fixed: A chat whose model can't be reached now says "Can't reach the model · retrying (N of M)" instead of "Thinking".

Proof

No capture: webview UI. See gallery agent-pane.turn-retry.

Agent session: agent session

🤖 Generated with Claude Code

---

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---

Summary by cubic

Shows when a chat's model can't be reached instead of reading "Thinking" while the harness retries the request.

Previously a turn whose model gateway was down kept its "Thinking" live line with a clock counting the retries. Now acpmux logs each retry, and the agent pane's live line reads "Can't reach the model · retrying (7 of 10) · 503 server error" (or "The model is busy" for 429/529 and rate-limit or overload errors, including status-less codes like rate_limit_error), calmly, with no sweep and no clock. When the model answers, the line returns to "Thinking" minus the time the retries took. Once a retry runs out, the turn still ends failed on the existing error card with Retry.

acpmux

• Each harness retry of a failed model request logs a turn_retrying mux record (transcript category), sourced from Claude Code's system/api_retry and Codex's _meta.codex.error with willRetry.
• The retry marks the turn silent, so the model's next sign logs turn_heard, ending the retry.

Agent pane

• The live line carries a client-only TURN_RETRY row, drawn in the same .cv-worked box so nothing moves when retries start or end.
• No new subscription needed; existing transcript clients receive the records.

^{Written for commit 0e5fc23. Summary will update on new commits.}

[github-actions]

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

Review 0e5fc23: 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=pr34306 -f ref=lane/api-retry-status -f platform=macos -f backend_mode=local

Gallery before/after for 0e5fc23: the capture produced no images (run).

red: cmux-next checks (god files, concurrency, crash safety, l10n); no finished base run on f382257 to compare; do not merge until green; see lane-rules

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4175186455101 (a7072f8788)

[teamleaderleo]

Owned by an agent session · session

[teamleaderleo]

Review (codex, router-review): SHIP at a51f918

Reviewer: codex gpt-6-astra high, fast tier.

Follow-ups: 3. Each lands as an issue in this repo that links this receipt; the lane that opened the PR fixes it forward.

SHIP at a51f918
Visual verdict: no images; Leo tries the build

1. [P2] [follow-up] cmux-tui/crates/acpmux/src/hub/turn_retry.rs:103 — Unrelated progress clears the retry warning. The shared silence handler accepts subagent output and claude.tool_progress, so either can emit turn_heard while the main request is still retrying. Track retry recovery separately and test a retry followed by subagent/tool progress before the main model answers.

2. [P2] [follow-up] webviews/src/agent-session/acpmux/conversation/Thinking.tsx:36 — Without an HTTP status, rate_limit_error and overloaded_error incorrectly produce “Can't reach the model.” The regex’s trailing word boundary fails before _error. Normalize underscores before matching or explicitly accept these values; add status-less cases to the tests.

3. [P2] [follow-up] webviews/src/agent-session/acpmux/conversation/TurnRetry.gallery.ts:19 — Capture the gallery variants, including a narrow pane, to verify truncation and layout.

Cargo and Bun were unavailable; source review and the extracted error-label reproduction completed.

Follow-ups:

• Keep retry warnings active through unrelated progress.
• Recognize status-less busy error codes.
• Capture and inspect the retry gallery.

[teamleaderleo]

Review (codex gpt-6-astra high, next-review, since=20261103T232347Z): SHIP at d32ae48

SHIP at d32ae48
Visual verdict: no images; Leo tries the build

1. [P2] [follow-up] turn_retry.rs:103: Background subagent progress clears the retry warning prematurely. The reused silent_turn state is consumed by heard_after_silence for subagent_progress, child stream events, and tool updates—not necessarily recovery of the failed model request. Keep retry recovery separate from general activity detection and test a main request retrying while a background subagent emits progress.

2. [P2] [follow-up] direct.ts:6218: The warning can remain after successful recovery across a daemon restart. silent_turn initializes empty and host adoption does not restore it, so the next successful response emits no turn_heard. The client replays turn_retrying and keeps displaying it until turn end. Restore the pending retry during adoption and cover restart between retry and recovery.

3. [P2] [follow-up] turns.ts:1155: Retry display is skipped when agent.sessionStatus is enabled and a todo list produces an ACTIVITY_LINE; layouts producing WORKING also bypass this guard. Those lines continue showing ordinary activity and elapsed time during an outage. Handle these supported live-line variants and add coverage.

4. [P2] [follow-up] TurnRetry.gallery.ts:19: Supply rendered gallery images, including a narrow pane, to verify truncation and layout stability.

Bun and Cargo were unavailable, so tests could not be rerun.

Follow-ups:

• Scope retry recovery to the affected model request.
• Restore pending retries during daemon adoption.
• Render retry status across live-line variants.
• Capture gallery images.

[blacksmith-sh]

Found 43 test failures on Blacksmith runners:

Failures

Test	View Logs
/tmp/tmpby0_enzm/summary-fail.json (live):/summary-fail.json (live):	View Logs
/tmp/tmpkw3ni25m/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
main.DeveloperIdAppTests.test_download_prints_the_active_profile_only/ test_download_prints_the_active_profile_only	View Logs
convention violations found (ERROR lines above)./ convention violations found (ERROR lines above).	View Logs
stubs: /System/Library/Frameworks/Security.framework/Versions/A/Security has no stub/ Security has no stub	View Logs
stubs: CoreFoundation.tbd: install-name /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation, missing 1: ['_CFRetain']/ CoreFoundation, missing 1: ['_CFRetain']	View Logs

...and 33 more test failures. View all on Blacksmith

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