Plugins: support declared colour inputs on mod-owned board materials
Conflicts with #363 resolved by keeping both: reconcile_variant_additions beside
active_mod_sources in mod_catalog.h, and both test targets in cmake/Apps.cmake.
reskate.outfit.worn() is meant to list full-body costumes: it has a "Costume" slot for them, between
the head and the feet. But no costume ever reached it. With a costume on, the list came back without
it, so a plugin that goes with a costume mod could not tell whether its costume was worn. Now it is
listed like any other item: {slot = "Costume", item = "Own_Hobkin", title = "Hobkin"}.
Why: the list leaves out the body's own parts (head shape, nose, skin...) by their catalog categories,
which start with "cust" (custhead, custnoses, custbodies...) or name the body. A full-body costume's
category is "cust_fullBodyCostume", so it matched both and was dropped before its slot was looked up.
A category that names a costume is now kept; everything else is decided as before.
The rule (category to slot) moves out of worn_items.cpp into outfit_kind.h as it was, so it can be
tested without the game: outfit_kind_tests (with the plugin tests) checks clothes by their slots, the
costume, the body's own parts, and an unknown category.
Checked in the game: with a costume mod's costume on, outfit.worn() returns
Costume | Own_Hobkin | Hobkin, where it returned nothing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Each part of the local board (deck, grip, trucks, wheels) has a material instance with a few
shader values of its own, found in the running game. reskate.board.parameters lists them by key
and type. set_parameter holds a colour or a number there each tick, published until it shows, and
the board's own value comes back when the plugin lets go or stops. Integers and switches pick how
the board is drawn, the store's foil looks among them, so plugins only read those. Only your own
screen changes.