🛑 fix: Preserve BYOM Foreground Cancellation Identity

[danny-avila]

Summary

I fixed foreground Stop propagation for attached BYOM commands by binding cancellation ownership to the response-scoped runtime message identity rather than the user message ID carried by the incoming HTTP request.

• Pass the exact runtime request message ID through both fresh execution and approval resume initialization so it matches the SDK event's response run_id.
• Preserve detached child-run isolation by applying the host abort signal only to untagged events or events matching the foreground response identity.
• Fail closed for tagged child events when a canonical foreground identity is unavailable.
• Cover distinct user/response IDs, approval reconstruction, detached execution ownership, and package-level type safety.
• Pair with Code Interpreter PR #172 so Code API drains the cancellation settlement and the native worker can safely reuse the workspace.

Change Type

• Bug fix (non-breaking change which fixes an issue)

Testing

• cd packages/api && npx jest src/agents/handlers.spec.ts --runInBand -t "run cancellation"
• cd packages/api && npx tsc --noEmit -p tsconfig.json
• cd api && npx jest server/services/Endpoints/agents/initialize.spec.js --runInBand --no-cache -t "binds foreground tool execution"
• cd api && npx jest server/controllers/agents/__tests__/request.resumeMetadata.spec.js --runInBand
• cd api && npx jest server/controllers/agents/__tests__/resume.spec.js --runInBand -t "seeds the thread parent before reconstruction"
• npm run static-checks
• Isolated live LibreChat handler → HTTP → Code API bridge store → native SRT worker verification with Fix: fix javascript heap out of memory error from vite #172: Stop returned in 2 ms, terminated the process tree, prevented the delayed write, cleared quarantine, and allowed immediate workspace reuse.

Test Configuration:

• macOS arm64
• Node.js v24.16.0
• Ephemeral HTTP port and Redis Unix socket
• Temporary writable native SRT workspace

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes

[danny-avila]

@codex review

Please review the current PR head 1fbad2a. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-09T13:17:43.450821Z	ed89ff5	Manual request

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[chatgpt-codex-connector]

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

Reviewed commit: 1fbad2ab60

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[danny-avila]

@codex review

Please review the current PR head 3dfb1ee. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. You're on a roll.

Reviewed commit: 3dfb1ee3ba

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[danny-avila]

@codex review

Please review the current PR head ed89ff5. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

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

Reviewed commit: ed89ff58e4

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