Full parameter reference for image_to_3d (9 params) and extract_glb (3 params) with failure mode table. Added Godot embedded_image_handling guidance and input requirements for concept images. Fix Blender export_image_format from 'PNG' to 'AUTO' (Blender 5.0 removed PNG as a valid option). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>