Nano Banana Pro OpenRouter Overview Generate or edit images with OpenRouter using the model. Support prompt-only generation, single-image edits, and multi-image composition. Prompt-only generation Edit a single image Compose multiple images Resolution - Use with , , or . - Default is if not specified. System prompt customization The skill reads an optional system prompt from . This allows you to customize the image generation behavior without modifying code. Behavior and constraints - Accept up to 3 input images via repeated . - accepts relative paths (saves to current directory) or absolute…