alicec-oai 40eac3ce8a Add explicit background control to image generation (#47484) ...

## What changed

Add the boolean `transparent_background` argument to `image_gen.imagegen` for generation and editing. Map `true` to `transparent` and `false` or omission to `opaque`, replacing the previous `auto` background setting.

Update tool guidance to request transparency for background removal and cutouts, and to preserve existing transparency during edits unless the user asks to change it.

## Testing

Add integration coverage for transparent, opaque, and omitted background arguments across generation, editing, and code-mode generation. Verify that `null`, string, and numeric values return a validation error without dispatching an image request.

GitOrigin-RevId: b10ac200a619c72cc1787da41b49d65d0cde05dd

2026-09-23 07:15:30 +00:00

..

common

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

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

suite

Add explicit background control to image generation (#47484)

2026-09-23 07:15:30 +00:00

all.rs

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

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