The slider was `max="1.5"` while the engine clamps to 1.1, so its right
third was unreachable — the fill stopped at 73% of the track and the rest
stayed empty however far the thumb was dragged.
`max` is now a named `MAX_VOLUME` that has to track
`PlayerEngine::set_volume`'s clamp. It cannot be imported: `audio-player`
is native-only and this client is wasm, so a comment on each end keeps
the pair honest. Raising the engine clamp was the alternative, but 1.1 is
deliberate headroom and more gain risks clipping, so the slider moved.
The tooltip now reports the level as a percentage too — the web
counterpart of the TUI's `Volume: 85%`.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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