Missing COMBO Primitive


The issue only contains an image with no text description of what the COMBO primitive is, what it should do, or where in the codebase it belongs. A newcomer would need to understand the existing primitive system in Comflowyspace, likely in the UI components or node definitions. Start by exploring the codebase for other primitives to understand the pattern, then design and implement the missing one based on the image's visual hint.

索引モデルが issue の本文から書いたものです。