claude-3d-harness: one registry over five Blender skill libraries, for Claude Code

[MAX-786]

Most Blender skills for Claude were written against this server's tool names. I collected five libraries and hit the usual problem: they overlap, and they do not agree on the server. This harness pins them as submodules and routes between them, with translation tables for the tool names each one expects. It runs on newo-ether's fork by default and keeps blender-mcp==2.0.0 as the fallback provider. I have not exercised that fallback in a live session yet (issue #5), so a report from anyone here would help a lot. https://github.com/MAX-786/claude-3d-harness