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3d9ef039e5
Three faults in the web player, each found by driving the shipped code in a
browser against the real server rather than by reading it.
set_volume did nothing at all. The dashboard sends `{ level: 0..1 }`
(device-detail.js: slider/100) and the Android player reads exactly that; this
player read `payload.value` and divided it by 100. Nothing in the product sends
`value`, so every browser panel acked the command and ignored it — the quietest
possible failure. Correcting only the key would have been worse than leaving it
broken: `level: 0.5` would have become 0.5%, which is inaudible and looks fixed.
The fraction is now canonical, `value` is still read as a percentage for
anything written against the old handler, and the scale is chosen by WHICH KEY
arrived rather than by the size of the number — 1 is legal in both conventions,
so a magnitude guess is guaranteed to be wrong for somebody. Parsing moved into
volumeLevelFromCommand() so it can be asserted without a socket.
setMediaVolume() also wrote `el.muted = (v === 0)`, so any non-zero volume
un-muted whatever was playing. An item an operator had deliberately silenced
started making noise the moment anyone touched the slider — reproduced live:
item flagged muted, one set_volume, muted went false. Mute has four inputs and
a fixed order (lib/media-mute.js), it is resolved when the element is mounted,
and a level is not entitled to overrule it — least of all the autoplay rule,
where unmuting without a gesture costs the video rather than winning the audio.
Volume 0 is silence on its own.
And the service worker pruned its content cache to an EMPTY keep-set.
`assignments: []` is what the server sends for a device between playlists, for a
playlist never published, and inside the `catch` when a published_snapshot fails
to parse — none of which mean "delete the media". Reproduced: three cached
assets, one empty payload, cache emptied. That is only survivable while the
uplink is up, which is precisely when the offline cache is worthless. A cache
kept too long costs disk the quota reclaims anyway.
Verified in Chrome against a live server: volume 0.42/0.8/0/0.25 land on the
element and survive an item change, a muted item stays muted through a volume
command, and three cached assets survive an empty push.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uaeo9MvzKoyXuN6ZsbhtkL
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