Apps live under /.lua/apps with data in /.lua/data, matching the runtime's
paths. ui.lua and hints.lua ship from the submodule through `make sdcard`
rather than a copy that drifts, so theme.lua and the firmware's own ui.lua
are gone.
App-visible changes: text takes a font role rather than a text size, the
theme palette names roles (color/background) instead of fg/bg, ticks are
timer.every, on_press is on_click, and centring is layout alignment now
that textAlign left the node contract.
evan
7510bb38a5