The rate list was duplicated — hardcoded in the templ x-for AND
implicitly in audio.ts — and phase 2's keyboard stepping would have
needed a third copy. SPEEDS is now the single exported const (the
agreed nine values, 0.5 through 3); the component exposes it as
'speeds' for the dropdown's x-for (templ cannot import TS), and
stepSpeed() walks the same array for the future audio-keys consumer.
normalizeSpeed() maps persisted values onto the list: garbage or
out-of-list localStorage entries fall back to 1x, and init() writes
the normalized value back so storage heals instead of staying
poisoned.
Pure logic unit-tested in audio.test.ts; live-verified with Playwright
on the KJV folder book: nine options render, pick/reload/persist and
the stale-value fallback all behave, button label and
audio.playbackRate agree in every case.
John O'Keefe
db96ea91cd