fix(deep-scan): settle completed workers without cancellation races

[mldangelo-oai]

Summary

• Settle completed Deep Scan workers immediately instead of waiting for subprocess streams to close.
• Stop forwarding coordinator cancellation once a worker has completed, including cancellation during event-iterator cleanup.
• Preserve current main's reducer recovery and artifact-tool behavior without unrelated runtime changes.

Verification

• Focused worker-shutdown and reducer-recovery coverage: 7 passed.
• TypeScript/generated-model checks passed.
• Decompressed bundle comparison confirms the runtime change remains limited to the worker executor.

Release sequencing

This changes bundled plugin code. Merge it before the plugin-version bump in release #343 to include it in 0.1.10; if it lands afterward, the next release must increment both bundled plugin version declarations beyond 0.1.17.

[mldangelo-oai]

@codex review

[chatgpt-codex-connector]

Security review completed. No security issues were found in this pull request.

Reviewed commit: b850474d08

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Codex Review: Didn't find any major issues. What shall we delve into next?

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[mldangelo-oai]

@codex review the exact current head b8f24f9. Verify the additive main merge preserves reducer-worker recovery and short artifact tool names while completed workers settle immediately and detach parent cancellation.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: b8f24f912d

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Security review completed. No security issues were found in this pull request.

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[mldangelo-oai]

@codex review the exact current head 44a5d64. Verify completion-time cancellation isolation, active and pre-aborted worker cancellation, terminal-failure cleanup, and preservation of reducer recovery from #342.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. More of your lovely PRs please.

Reviewed commit: 44a5d64ec0

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[zcrab-oai]

Validated review findings are attached inline after three independent reviews and a separate source-level verification.

[mldangelo-oai]

@codex review the exact current head 5509880. Verify completed workers settle without cancellation races, active workers still receive cancellation, the bundled change remains limited to the worker executor, and current reducer behavior is preserved.

[chatgpt-codex-connector]

Security review completed. No security issues were found in this pull request.

Reviewed commit: 5509880e0a

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. More of your lovely PRs please.

Reviewed commit: 5509880e0a

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[mldangelo-oai]

@codex review the exact current head ffebbe9. Verify completed Deep Scan workers settle immediately, active and pre-aborted workers still receive cancellation, terminal failures detach coordinator cancellation, and current main remains unchanged outside the bundled worker executor.

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Security review completed. No security issues were found in this pull request.

Reviewed commit: ffebbe9154

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💡 Codex Review

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Reviewed commit: ffebbe9154

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