Make the Android store look and read like the rest of the app

Apps without a banner or screenshot show their icon on a blurred wash of
itself, or a VR or app glyph, rather than a giant letter. Every card says
whether it will run on the Frame (works, should install, not checked yet,
won't run), in place of "Free" on every card.

The featured app isn't repeated in the rows below, and no row repeats
another. Its buttons stay in the app: Install on the Frame opens the details
with the install under way, and Details opens them. It's chosen from apps
that can run, with real artwork, VR first.

The stray "Browse SideQuest" link goes; the Sources dialog lists SideQuest
with a link to its website instead of a switch that did nothing. The "All
sources" drop-down goes too, as the Sources dialog already chooses them.
The copy is plain and British ("Apps and games for the Frame", no "Find
your next favorite"), and Games and Android point at each other.

Two functions were each declared twice across the page's scripts, so the
later one silently replaced the earlier everywhere: the store's details
dialog opened empty (the Devices tab's renderDetail ran instead), and Home's
Desktop view never found the headset's panels (the panel switcher's loader
ran instead). They're renamed, and a test
fails on any top-level name declared twice.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/sidequest.md

@@ -65,6 +65,8 @@ flow, not evidence of an anonymous download API. It is not implemented here.
 - `search()` raises a user-readable `SourceError` with the browse URL (zero
   limit returns no rows). It does not invent app results or report a false
   “no matching games”. The aggregate search UI should surface this source error.
+  In the app, Discover doesn't link to it; the **Sources** dialog lists SideQuest
+  with a link to its website instead of an on/off switch.
 - `details()` accepts a numeric listing id and returns its canonical page link,
   `downloadable: False`, empty versions/tags/headsets and the `images` shape
   `{icon: None, banner: None, screenshots: []}`. Name is explicitly a listing id;