scenario-blender-rigging

# Blender rigging Expert rigging means the rig is specified by bone placement, proven by deformation under stress poses, and shaped around what the animator will actually use. The stance of every source expert: place joints precisely, generate or build the simplest mechanism that works, then pose it, measure it, render it and fix it before calling it done. If a sibling skill named here is missing from your available skills, ask the user to install it (`npx skills add scenario-labs/skills --skill <name>`); unattended, proceed from tool schemas and flag the gap. **REQUIRED BACKGROUND:** scenario-blender-expert (execution channel, review loop, 5.2 API changes). Module: [`scripts/bx_rig.py`](scripts/bx_rig.py) (tested on 5.2.1, headless and GUI). `import sys; sys.path.append("<skills>/scenario-blender-rigging/scripts"); import bx_rig as R`. ## Stance (the expert delta) - **Placement is the specification.** Joints sit in the center of the volume they move, not on the anatomical skeleton ("bones simulate bone, muscle and tissue"); knees and elbows get a slight pre-bend because the chain's curvature IS the IK plane; rolls put each hinge on one local axis so the animator uses one curve (CGDive; Demeter: the bend, not the roll, decided where his pole landed). - **The metarig is the source, the generated rig is disposable.** Every fix goes into metarig bones, Rigify parameters or a post-generation script; regenerating keeps control names, so weights and animation survive (CGDive, ...