Two-body enclosure (no fasteners)
Two non-interfering separable bodies (base + lid), no fasteners. Promoted from the enclosure ablation ladder to a scored family (#4/#5); reuses the enclosure_fastened private oracle.
Capability axes
Graded categories
Grading ladder
1
Structural
Compiles to a single, watertight, non-empty solid.
2
Geometric
Outer dimensions / bounding box match the brief within tolerance.
3
Physical constraints
Mass, fit, and physical-constraint targets are met.
4
DFM
Manufacturable for the process (e.g. minimum wall thickness).