At 2x, show time/temp as static text instead of scrolling it

First experiment in using 2x's extra width for something other than
just stretching the 1x layout: the time/temp line usually fits without
scrolling once the text column doubles in width. Marquee is unneeded
overhead for short, non-truncated text.

Guarded by a length check (<=15 chars), not just scale==2: pixlet has
no way to measure rendered text width from within Starlark, and
tom-thumb is variable-width, so this is a heuristic rather than an
exact fit check. Measured via the CLI: a realistic worst case like
"12:59 pm · 100°F" (16 chars -- 2-digit hour, 3-digit temp) renders at
63px against a 64px budget, just 1px of margin -- too close to rely on.
15 chars keeps a real margin (59px measured) against overflowing into
the art column. Falls back to Marquee past that length, and always at
1x regardless of length (tighter width there either way).

subwave_nowplaying.star

@@ -219,12 +219,29 @@ def main(config):
     if now["host"]:
         show_host_row.append(render.Text(" " + now["host"], font = "tom-thumb", color = colors["accent"]))
 
+    time_temp_text = render.Text(now["time_temp"], font = "tom-thumb", color = colors["meta"])
+
+    # At 2x, the extra width usually fits e.g. "9:54 pm \xb7 65\xb0F" without
+    # scrolling -- tried as a first, contained experiment in using 2x's
+    # extra room rather than just stretching the same 1x layout. But
+    # tom-thumb is variable-width and pixlet has no way to measure
+    # rendered text width from within Starlark, so this is a length
+    # heuristic, not an exact fit check: measured via the CLI,
+    # "12:59 pm \xb7 100\xb0F" (16 chars, a realistic worst case -- 2-digit
+    # hour, 3-digit temp) comes out to 63px against a 64px budget, 1px of
+    # margin; "11:59 am \xb7 -5\xb0F" (15 chars) is a safer 59px. Capping at
+    # 15 chars keeps a real margin against overflowing into the art
+    # column instead of relying on a 1px coincidence. Always Marquee at
+    # 1x, where the available width is tighter regardless of length.
+    time_temp_fits = scale == 2 and len(now["time_temp"]) <= 15
+    time_temp_line = time_temp_text if time_temp_fits else render.Marquee(width = text_width, child = time_temp_text)
+
     top_lines = [
         render.Marquee(width = text_width, child = render.Text(now["title"], font = "tb-8", color = colors["text"])),
         render.Marquee(width = text_width, child = render.Text(now["artist"], font = "tb-8", color = colors["text"])),
         render.Box(width = text_width, height = scale, color = colors["separator"]),
         render.Marquee(width = text_width, child = render.Row(children = show_host_row)),
-        render.Marquee(width = text_width, child = render.Text(now["time_temp"], font = "tom-thumb", color = colors["meta"])),
+        time_temp_line,
     ]
 
     children = [render.Column(children = top_lines)]