v1.3.1

Improved tool descriptions for better LLM routing

• All tool descriptions now include accurate size constraints verified against the OpenAPI spec
• Added routing guidance ("use this when... / prefer X instead") so LLMs pick the right tool for each task
• Fixed create_tiles_pro schema: capped tile_size and tile_height at 128px (was incorrectly 256)
• Clarified fixed-size-only constraints for rotate (16/32/64/128) and animate_with_skeleton (16/32/64/128/256)
• Marked legacy tools (animate_with_text, inpaint, create_image_pixflux, create_image_bitforge) with guidance to prefer v2/v3 alternatives