v0.12.1

Breaking

• Correct Image 2.0 edit validation to require source_image_urls and aspect_ratio instead of task-based edit fields.
  Migration: Replace source_task_id and mask_indices with one to five source_image_urls and an aspect_ratio; prompt is optional.

Added

• Add the Grok Imagine segment-map command and Image 2.0 request validation metadata.
• Accept public image_url inputs for Image 2.0 segment-map requests.

Deprecated

• Deprecate source_task_id for Image 2.0 segment-map requests.
  Replacement: Send image_url instead; source_task_id remains accepted for compatibility.

Fixed

• Restrict Topaz image upscale commands to the supported 1x, 2x, and 4x factors.