f101cdd5e2
- Added `openai` and `openai-codex` as image providers and let `providers.image=auto` prefer GPT images. - Updated settings, selector, and SDK wiring so OpenAI image providers pass through `setPreferredImageProvider`. - Replaced Gemini-only image tooling with `image-gen` and added OpenAI/Codex hosted-image execution with SSE parsing. - Added image-gen and handoff tests, including final-yield no-compaction regression and OpenAI payload/header assertions.