Every menu item now acts on a plain click: slots open their editor with a
use button, entries open their editor, and duplicating is gone. The entry
editor groups settings into labelled rows, numbers and colours get their
own screens instead of relying on right click or Q, and slot names show
the particles per tick used out of the maximum.
Count the real particle amount of reward designs, set slot budgets to
30 particles per tick (60 for the server team), let requirements test
only against an UnlockContext, and drop requirements and messages the
old particle menu used.
Replace the particle inventory with a main menu showing the 7 slots and
unlocked presets, a slot editor with a read-only view for locked slots,
and an entry editor with pickers for designs, choices, colours and icons.
Slots are limited to 10 entries and a particles-per-tick budget.