MCP backend Use when: Iterative source-of-truth alignment repair, choosing sequential vs parallel correction order, generating fit repair queues, stopping on contradictory templates, or coordinating geometry/UV/lighting fixes from validation reports. 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. Fit Repair Optimizer This skill converts validation failures i…