Add list styles: Podium, Spotlight, Grid, List

- Each list picks a style in List settings (new lists default to Podium);
  existing lists keep Grid or List
- Podium: top 3 on medal-colored steps (#1 center and raised), the rest
  behind a native <details> "Show N more"; stacks #1 over #2/#3 on phones
- Spotlight: #1 as a feature card (art, why-note or description, play
  button), the rest as a numbered list
- Visitors can switch styles on a list page (?style=), preserved across
  pages; later pages fall back to a plain list since they don't start at #1
- Entries' detail data now lives on a wrapper per list, so featured and
  collapsed entries all open the detail view

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -6,10 +6,11 @@ Your page is titled **"*Your name*'s Canon"** by default. Set your name under Se
 
 Visitors just see your lists. There's no sign-up, no feed and no login button. You manage everything from `/login`.
 
-- **Ranked lists per category**: Movies, TV Shows, Albums, Songs, Video Games and Theater. Each list sets its own size, title, description and layout (artwork grid or ranked list).
+- **Ranked lists per category**: Movies, TV Shows, Albums, Songs, Video Games and Theater. Each list sets its own size, title, description and style.
 - **Search-to-add** from TMDB, TheTVDB, IGDB, Deezer/MusicBrainz and Wikipedia, with add-manually as a fallback for anything they miss.
 - **Custom lists** for anything else, like sports teams, drinks or restaurants. You name the list and add entries by hand (with your own photo or logo), or pull a name and picture from Wikipedia.
 - **Theater by production**: record *which* staging you mean (Broadway, West End, North American Tour, a revival…) plus venue and cast, and use that production's own poster.
+- **Four styles per list**: **Podium** (top 3 on a medal podium, the rest behind "Show more"), **Spotlight** (#1 as a big feature), **Grid** and **List**. You pick each list's style in List settings, and visitors can switch styles on a list's own page.
 - **Drag to rank**, or use the arrow buttons or type a new number. Paginated editing keeps huge lists usable.
 - **Art is cached on your server**, so pages never hotlink and keep working if a source changes. You can also paste an image URL or upload your own.
 - **Preview clips** for songs and albums: a play button plays 30 seconds from Deezer (an album plays its most popular track). Clips stream through your server, so visitors never connect to Deezer. You can turn this off in Settings → Profile.