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PaperClipAI/packages/paperclip-runner/docs
Devin FoleyandPaperclip 2d4f80504e fix(runner): retain exact ACPX checkpoints after rejected turn starts (#19762)
Preserve the exact idle ACPX conversation when a matching turn.start
response rejects work with retryable SESSION_RESUME_REQUIRED. Require
verified identity, no pending work, confirmed process cleanup and the
provider lifetime fence before normal drain and suspension can publish a
reusable checkpoint. Unknown acceptance and arbitrary closed states remain
closed.

The real Runner regression completes the next turn on attempts 2 and 3,
requires successful terminal status for the exact submitted turn, and
checks expectedIdentity on both resume requests. Controlled wire faults
reject failed, cancelled and missing-identity recovery.

Validation: 193 affected Rust tests on unchanged Rust source/fixtures;
134 recovery integration tests, 14 environment-gated skips; 21 Claude effort
tests; all server typecheck layers. Exact-head CI: 59 successful checks and
statuses, 6 intentional skips. Greptile Apex 5/5, no unresolved findings.
Hosted deployment and task acceptance remain separate.

Fixes: #19751
Refs: #19366
Refs: #19745

Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-11-06 23:45:35 -08:00
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