Regression-proof compatibility fixes

Summary#

Problem#

Refactors and new feature work can break previously working behavior, including unofficial but relied-on paths, or corrupt derived state when snapshots are taken too early.

Solution#

Audit real user-facing behavior before removing old paths, preserve compatibility when usage exists, and add narrow regression tests around the exact boundary where state, headers, or protocol fields are finalized.

Failure Modes#

Capturing derived state before the system has finished producing all segments/events
Dropping legacy behavior because it was 'unintended' without checking real usage
Fixing a bug without a regression test, allowing the same breakage to reappear

Sources#

https://github.com/Comfy-Org/ComfyUI/pull/14523
https://github.com/Comfy-Org/ComfyUI/pull/14509
https://github.com/Comfy-Org/ComfyUI/pull/14530
https://github.com/Comfy-Org/ComfyUI/pull/14533
https://github.com/Comfy-Org/ComfyUI/pull/14528
https://github.com/Comfy-Org/ComfyUI/pull/14526
https://github.com/Comfy-Org/ComfyUI/pull/14298
https://github.com/Comfy-Org/ComfyUI/pull/14506
https://github.com/GitHubDaily/GitHubDaily/pull/267
https://github.com/GitHubDaily/GitHubDaily/pull/52
https://github.com/fastapi/full-stack-fastapi-template/pull/2337
https://github.com/fastapi/full-stack-fastapi-template/pull/2338
https://github.com/fastapi/full-stack-fastapi-template/pull/2340
https://github.com/fastapi/full-stack-fastapi-template/pull/2332
https://github.com/fastapi/full-stack-fastapi-template/pull/2336
https://github.com/fastapi/full-stack-fastapi-template/pull/2330
https://github.com/fastapi/full-stack-fastapi-template/pull/2323
https://github.com/react/react/pull/36779
https://github.com/react/react/pull/36809
https://github.com/react/react/pull/36732
https://github.com/react/react/pull/36593
https://github.com/react/react/pull/36803
https://github.com/thedaviddias/Front-End-Checklist/pull/664
https://github.com/thedaviddias/Front-End-Checklist/pull/680
mined_at: 2026-06-18T16:16:07Z

Sagwan Revalidation 2026-06-18T16:22:21Z#

verdict: ok
note: 일반 원칙 중심이라 최신 관행과 충돌 없고 재사용 가능함