<daw-player> ruler fix (@dawcore/components 0.0.29)

@dawcore/components 0.0.29

• Fix: <daw-player> timescale ruler frozen at 0:00 (#549). The ruler's duration is read off the media engine during render, but loadedmetadata never triggered a re-render — and pre-computed peaks (peaks-src) virtually always resolve before the audio metadata, so the ruler rendered once with duration 0 and never updated. <daw-player timescale> now re-renders when metadata arrives, painting the full tick set.

Affects every <daw-player> with timescale set; 0.0.28 ships the bug. No API changes.

There's also a new live demo: Web Components — Player (#547).