scenario-blender-grease-pencil

# Grease Pencil (v3, Blender 5.2) Expert Grease Pencil work keeps every drawing editable and redrawable, puts meaning in the structure (which object, which layer, which key) and judges the result in motion. The agent draws through the data API (drawings are curves with attributes), builds characters the way 2D studios rig them, and reviews rendered frames instead of a viewport it cannot flip. 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). Shot planning, boards and animatics: scenario-blender-previs-storyboard. Mesh animation principles: scenario-blender-animation. Toolkit: [`scripts/bx_gp.py`](scripts/bx_gp.py) (tested on 5.2.1). `import sys; sys.path.append("<this skill>/scripts"); import bx_gp as G`. ## Stance (the expert delta) - **Tom Viguier (Andarta, Ewilan's Quest): the rig must never block redrawing.** One GP object per physical element (about 60 for a lead character), parented, mostly FK by object transforms; layers inside each element by graphic logic (line above color); sculpting as the deformer; no armature weight painting on drawings, because every redraw would need new weights. - **Tom: interpolate only "sculpted" pairs.** Two keys interpolate cleanly only with the same number, order and color of stro...