cc30ae4284
When multiple image-generator tasks carry the same brief, request all images from a single GPT Image call with Count=N instead of firing one call per image. Adds directImageBatchCount/Prompt detection, batch (incremental) generation paths, and folds the planned count into the idempotency key. Disables the streaming plan probe for multi-image requests. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>