Abhinav 6eecd04fc1 Normalize image detail for the receiving model (#44249) ...

## Why

Switching models can send images from conversation history with `detail: original` to a model that does not support it.

## What changed

Normalize image details on request copies using the receiving model's capabilities. Downgrade `original` to `high` when unsupported, covering user messages and function and custom tool outputs. Preserve stored image details so switching back to a supporting model retains `original`, and continue stripping details for Responses Lite.

## Testing

Expand unit coverage across image detail values and model capabilities. Extend integration coverage for model switches within and between turns, text-only models, and resumed and forked threads, including assertions that persisted tool outputs remain unchanged.

GitOrigin-RevId: 2561651ea74f045e00f708ae53771a41dcd49c94

2026-09-09 17:56:06 +00:00

..

common

Scope model catalog caches to the current provider and auth identity (#43906)

2026-09-08 20:37:30 +00:00

suite

Normalize image detail for the receiving model (#44249)

2026-09-09 17:56:06 +00:00

all.rs

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

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