Two gaps a review found. The this.phone gate on the interpolation interval is what CLAUDE.md says earns the matchMedia call, and every test passed without it — so it is asserted on the timer count now, since a desktop render is empty either way and cannot tell the two apart. Watched failing with the gate removed.
The e2e spec left LONG_TRACK playing in a workers: 1 suite against one long-lived app, immediately before four other phone-* specs. Nine specs clear the queue in afterEach for that reason and phone-transport.spec.ts records the flake it caused.
#59 took the seek bar off the phone's transport, so the one thing a
mini player is expected to say without being opened -- how far through
the song it is -- had nowhere left to be said.
It is the shell's element and its own 2px grid row between `bottom-bar`
and `bottom-nav`, because those two are separate components and either
one drawing the line means reaching into the other's box. The fill is
`scaleX()` off the same `PlaybackPositionChanged` the seek bar renders,
with the same `trackChangeId`/`seq` guards and an interval that only
interpolates *between* reports -- never its own clock, which is the
rule that exists because a local counter drifted 30 s away from the
backend across four keyboard seeks.
It is `aria-hidden` and takes no pointer events at any depth: Now
Playing's seek bar is what announces the position, and a 2px strip on
the top edge of the tab bar is exactly where a thumb aiming at a tab
lands. It renders nothing above 600px, from `matchMedia` rather than a
media query, because a stylesheet cannot stop a 1 Hz interval running
for the life of every desktop session about a line nobody can see.
Its phone rule is at the foot of index.css beside `job-band`'s, not in
the phone block above: a media query adds no specificity, so a
`display: block` written before the `display: none` that takes it out
of the desktop grid loses to it and the line never appears at all.
Closes#58
logan