- Register builtin model definitions for `gpt-image-2.5`, `gpt-image-2.5-flare`, and `gpt-image-2.5-sunburst`.
- Update OpenAI image handlers and request routing to recognize GPT Image 2.5 models.
- Support direct image generation and edit execution for GPT Image 2.5 variants in the Codex executor.
- Apply client visibility overrides to hide new builtin image models where appropriate.
- Introduced `disable-codex-cloaking` to allow disabling enforced `User-Agent` and `Originator` headers for Codex requests.
- Updated header application logic to conditionally include `codexUserAgent` and `codexOriginator` based on configuration.
- Enhanced config diff tracking to detect changes in `disable-codex-cloaking`.
- Expanded tests to cover new config behavior and header application scenarios.
Direct OpenAI image calls can inherit downstream User-Agent values from the Gin request context, which may trigger upstream Cloudflare 1010 blocks.
Clone inbound Codex headers for direct image requests and remove only User-Agent before applying defaults. This keeps Version, X-Codex-Turn-Metadata, X-Client-Request-Id, and Originator forwarding intact.
Expand direct image regression coverage for downstream identity headers and align edit endpoint expectations with /images/edits.
- Introduced the `gpt-image-2` model in Codex built-ins and updated visibility logic in the registry.
- Added direct proxy support for OpenAI image generation and editing endpoints.
- Implemented new execution paths for `/images/generations` and `/images/edit`, ensuring seamless handling for both JSON and multipart payloads.
- Expanded test coverage to validate the new model and direct proxy features, including streaming scenarios and error handling.
