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fix(zcode): preserve completed results through slow native journals - #339

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tzhouam merged 1 commit into
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fix/kb-zcode-stream-drain-20261009
Oct 9, 2026
Merged

tzhouam merged 1 commit into
mainfrom
fix/kb-zcode-stream-drain-20261009

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@tzhouam

@tzhouam tzhouam commented Oct 9, 2026

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Nightly knowledge drafting could lose a completed GLM answer: ZCode writes stream events without awaiting pipe backpressure and forces exit after a short grace period. Slow durable event recording left stdout truncated mid-JSON, so the service correctly rejected the missing result even though the model had finished.

Capture stdout and stderr into private, per-invocation anonymous regular files and tail them with independent offsets. Preserve live durable journaling, drain all completed output before validation, and enforce the producer deadline with a cancelable watchdog. Cleanup still reaps the owned process group. Result, exit-code, model, tool-containment and publication checks remain in force; no ZCode global settings change.

Validation: 56 focused tests passed, including a forced-exit producer with a slow durable sink, exact result retention, real timeout while the sink is slow, completed-producer drain beyond the deadline, malformed/missing results, interruption cleanup, temporary-file permissions and existing provider/native-journal tests. Documentation checks and strict SPEC freshness pass. No models were invoked for regression tests. Full CI must pass before native rollout.

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📝 Code Review ✅ Completed 2026-10-09T09:04:35.335873Z f09556c PR opened
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@tzhouam
tzhouam merged commit 5aca1e7 into main Oct 9, 2026
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