After Effects' Puppet was dropped with a one-line "has the effect" loss. It now
arrives as EffectCraft's Puppet (ec.distort.puppet) in its place in the stack,
with its name and fx switch, and the report lists per mesh Triangles, Expansion
and per pin group (Deform, Overlap, Stiffness) the pins, keyed pins and atom
match names; entries outside the known tree are named once, and long lists stop
at ten with "and N more".
No pins are created: a pin's rest place is a vertex of the hidden mesh data and
the unit of its Position is unknown, and no corpus file holds a Puppet. The tree
(docs/aep-format.md 3.7) comes from an external scripting listing, not the
corpus; the sample that settles it is described there. The fx_inject test
helpers can now inject any effect instance, which the new tests use.
Refs #3093