Always render the show/host and time rows, even when empty

Previously these rows were only added when the underlying data was
present, so the layout would shift depending on what SUB/WAVE happened to
report at the moment -- e.g. the time row would jump up a line whenever
there was no active show. Now both rows always render (with blank text
where needed) so they hold a fixed vertical position regardless of what
data is available.

subwave_nowplaying.star

@@ -121,18 +121,21 @@ def main(config):
     art = _fetch_cover(station_url, now["subsonic_id"])
     progress = _track_progress(now["subsonic_id"], now["duration"])
 
+    # The show/host and time/temp rows always render, even when empty, so
+    # they hold a fixed vertical position regardless of which fields a given
+    # track/moment actually has data for -- rather than the layout shifting
+    # up when e.g. there's a show but no DJ credited, or no show at all.
+    show_host_row = [render.Text(now["show"], font = "tom-thumb", color = colors["text"])]
+    if now["host"]:
+        show_host_row.append(render.Text(" " + now["host"], font = "tom-thumb", color = colors["accent"]))
+
     top_lines = [
         render.Marquee(width = 32, child = render.Text(now["title"], color = colors["text"])),
         render.Marquee(width = 32, child = render.Text(now["artist"], color = colors["text"])),
+        render.Box(width = 32, height = 1, color = colors["separator"]),
+        render.Marquee(width = 32, child = render.Row(children = show_host_row)),
+        render.Marquee(width = 32, child = render.Text(now["time_temp"], font = "tom-thumb", color = colors["meta"])),
     ]
-    if now["show"]:
-        top_lines.append(render.Box(width = 32, height = 1, color = colors["separator"]))
-        show_host_row = [render.Text(now["show"], font = "tom-thumb", color = colors["text"])]
-        if now["host"]:
-            show_host_row.append(render.Text(" " + now["host"], font = "tom-thumb", color = colors["accent"]))
-        top_lines.append(render.Marquee(width = 32, child = render.Row(children = show_host_row)))
-    if now["time_temp"]:
-        top_lines.append(render.Marquee(width = 32, child = render.Text(now["time_temp"], font = "tom-thumb", color = colors["meta"])))
 
     children = [render.Column(children = top_lines)]
     if progress != None: