MCP backend Use when: Animated circular HUD elements, aura rings, orbit arcs, dots, dashed circles, halo effects, mascot/logo motion graphics, source-derived decorative elements, avoiding bad outside-element animation. Before the first Blender call, read ../text-to-blender/references/mcp-backends.md. Prefer official MCP for shared capabilities; preserve the selected backend for the whole task. Tool names in recipes are client/legacy examples: map them through that reference and its agent-host guide. Orbital HUD Motion Decorative circles are design elements, not filler. They must be derived fr…