Revert to native Marquee for all lines; remove album-art overlap

README.md

@@ -1,11 +1,12 @@
 # subwave-nowplaying
 
 Tronbyt/Tidbyt app showing the current track on a [SUB/WAVE](https://github.com/perminder-klair/subwave)
-internet radio station: album art, track title/artist (scrolling), a thin
-separator, the current show and host, and a full-width footer with
-time/temperature and a track progress bar pinned to the bottom edge. Color
-scheme (cyan title/artist, white show name, magenta host/progress bar) is
-loosely modeled on SUB/WAVE's own web now-playing display.
+internet radio station: album art, and four scrolling lines — track
+title/artist, a thin separator, the current show and host, and local
+time/temperature — plus a track progress bar pinned to the bottom of the
+32px-wide text column. Color scheme (cyan title/artist, white show name,
+magenta host/progress bar) is loosely modeled on SUB/WAVE's own web
+now-playing display.
 
 Not tied to any specific station — set your own station's base URL in the
 app's config when adding it to a device.
@@ -28,22 +29,28 @@ app's config when adding it to a device.
 - If a track has no `subsonic_id`, or the cover fetch fails, falls back to a
   full-width layout with no art rather than a broken image.
 - Shows the current show name (`context.activeShow.name`) and host name
-  (`dj.name`) below the artist, separated by a thin divider line.
-- Shows the local time and temperature (`context.clock`/`context.weather`)
-  and the track progress bar as a full-width (64px) footer overlaid on the
-  bottom of the layout — not confined to the 32px-wide text column, which
-  gives roughly 2x the character budget for the time/temp line (at the cost
-  of covering the bottom ~9px of the album art with a translucent bar).
+  (`dj.name`) below the artist, separated by a thin divider line, and the
+  local time/temperature (`context.clock`/`context.weather`) below that —
+  all as independently scrolling Marquee lines, confined to the 32px-wide
+  text column next to the album art (no overlay/overlap with the art).
 
-**Why show/host/time-temp are plain Text, not Marquee:** pixlet's Marquee
-runs its own internal scroll-cycle animation regardless of whether the text
-actually needs to scroll, and combining multiple Marquees with very
-different cycle lengths in one Root desyncs them — confirmed via an
-isolated repro where a short Marquee'd line intermittently collapsed to a
-single character on frames where the long title/artist marquees were
-mid-cycle. Only title/artist (which actually benefit from scrolling for
-long names) use Marquee; the shorter supplementary fields use plain
-Text/Row and just clip if too wide, which is an acceptable tradeoff.
+**Known quirk — occasional Marquee glitch:** pixlet's `render.Marquee` runs
+its own internal scroll-cycle animation, and stacking several Marquees of
+different text lengths in one Root can occasionally desync them — a line
+may briefly blank or show a garbled frame while another Marquee is
+mid-cycle. This is a real, currently-unfixed pixlet bug (there's an
+open `FIXME: Behaviour when children themselves are animated is a bit
+weird` in pixlet's own widget docs), not something introduced by this app.
+It's also not unique to this app: `tronbyt/apps/apps/goosefm/goose_fm.star`
+(an accepted official community app) stacks 3 Marquees for the same kind of
+now-playing info and exhibits the identical occasional glitch on close
+frame-by-frame inspection. In practice it's subtle enough to be easy to
+miss on a real, continuously-scrolling display. A custom hand-rolled scroll
+(via `animation.Transformation` + `Translate`, avoiding `Marquee` entirely)
+was prototyped and could fully eliminate this, but only by consolidating
+down to 2 scrolling lines total (title alone, everything else combined into
+one line) — full independent lines for every field was preferred instead,
+accepting the same minor quirk real Tidbyt/Tronbyt apps already ship with.
 
 **Progress bar caveat:** the now-playing API reports track `duration` but
 not elapsed/remaining time, so the app tracks playback position itself —