Chris Dong 6cfe299849 Preserve image generation request IDs on failure (#47327) ...

## Why

Failed image requests discarded the `x-codex-imagegen-request-id` header, leaving failure analytics without the request ID.

## What changed

Carry the request ID through `ImageRequestError` and backend errors for image generation and editing. Preserve it on failed image generation items for HTTP errors, response decoding errors, and responses with no image data.

## Testing

Extend the app-server failure test to verify that a request ID returned with an HTTP 500 response reaches `codex_image_generation_event` analytics.

GitOrigin-RevId: 57cddacc0221e5b58877ac375d5eca0afb99d853

2026-09-22 17:37:45 +00:00

..

common

Persist thread creator identity in rollouts and SQLite (#47113)

2026-09-21 21:22:01 +00:00

suite

Preserve image generation request IDs on failure (#47327)

2026-09-22 17:37:45 +00:00

all.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00