- applyVolume/setVol now pass the element's CURRENT level as the normalize
fallback instead of undefined, so a corrupt persisted volume holds the
playing level rather than jumping to PLEX_SCALE.default=1 (full) — the "full
blast" failure mode playerVolume.ts's header explicitly warns against. (The
old bare clamp muted instead; both are wrong for corrupt data.) readMerged
shallow-merges stored prefs without per-field validation, so a corrupt
volume is reachable.
- setVol normalises the level ONCE and both applies + persists that same value,
so the <video> element and the stored pref can never disagree.
- Test documents the hold-last-known contract (corrupt raw + valid fallback ->
fallback; only an unusable fallback lands on the scale default).
Gate green (tsc / eslint-0 / prettier / knip / vitest 83 / pytest 234).
peter
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