Show HN: Aircad – Professional drafting and 3D modeling in the browser

Aircad is a browser-based professional drafting and 3D modeling platform that combines precision 2D drafting with solid modeling capabilities, featuring multiplayer collaboration, AI-assisted design agents, and compatibility with existing DWG files. The platform eliminates installation requirements, includes built-in component libraries, and offers an AI assistant that can interpret natural language commands to modify designs and check compliance with building codes.