compound-train PASS

Compound spur-gear train from sources/compound-train-spec.md (authoritative, text only): a 195 x 100 x 5 base plate carrying, on revolute joints about +z at (0, 0), (60, 0) and (120, 0), a motor-driven 20-tooth input pinion, a compound idler (40 teeth over z 0..8 and 15 teeth over z 8..16 on one solid) and a 45-tooth output gear (z 8.5..16.5); module 2, 20 deg pressure angle, zero shift, 0.10 mm c

clip play base (modelled) pinion (modelled) idler (modelled) output (modelled)

gates

[A] parts_pass	PASS
[A] bom_complete	PASS
[A] joint_fidelity	PASS
[A] clearances	PASS
[A] motion_clear	PASS
[A] fluid_domain	n/a
[B] export_agreement	PASS
[B] performance	PASS
[B] conservation	n/a
[B] refinement	n/a
[C] source_hygiene	PASS
[C] boundaries_complete	n/a
[C] provenance	PASS
[C] evidence_separation	PASS

observables

id	status	value ± u_numerical	mesh-resolved	case
trainRatio	ok	0.16667	-
outputAt360	ok	60 deg	-

A value its mesh ladder does not resolve is not evidence of performance; report.md gives each prediction's validation basis.