feat(app,android,ios): display type, artwork fade-in, shimmer, lifting tiles and paged shelves

A first pass at making the three clients look like a streaming app rather
than a file browser, with no new data behind it.

- Type: a Hero rung (34) set in Inter Display Bold, the optical size Inter
  draws for large text, for the banner's name and a title page's name where
  no logo stands in. Desktop `Role::Hero` and `theme::display`; Android and
  iOS `displayLarge`, at a tighter 1.1 leading. The font has its private use
  mappings stripped like the other two cuts.
- Artwork fades in over its skeleton on Android and iOS, as it already did
  on desktop cards; art already decoded draws at once. Desktop episode
  stills and logos fade in too.
- Skeletons shimmer: a soft diagonal highlight instead of a pulse.
- Desktop tiles lift towards the viewer under the pointer, capped so a
  lifted tile never reaches its neighbour, and keyboard focus gets a ring
  of its own.
- Desktop shelves share one `ui::shelf`: edges fade into the page and, under
  the pointer, round buttons page the row along.
- Genres are chips on Android and iOS; quality (4K, HDR, 10-bit, Dual audio)
  moves out of the facts line into small outlined marks on all three.
- Desktop title page and hero buttons use a tonal style beside the accent
  one, and the player's top bar a dark glass style, instead of egui's stock
  buttons. Episode numbers leave monospace for the type ramp.
- The phone players' top and bottom bars are gradients rather than flat
  bands, and a double-tap seek is felt as well as seen.

ios/project.yml

@@ -31,6 +31,8 @@ targets:
         buildPhase: resources
       - path: ../android/app/src/main/res/font/inter_semibold.ttf
         buildPhase: resources
+      - path: ../android/app/src/main/res/font/inter_display_bold.ttf
+        buildPhase: resources
       - path: ../android/app/src/main/assets/licenses/GPL-3.0.txt
         buildPhase: resources
       - path: ../android/app/src/main/assets/licenses/Inter-OFL.txt
@@ -74,6 +76,7 @@ targets:
         UIAppFonts:
           - inter_regular.ttf
           - inter_semibold.ttf
+          - inter_display_bold.ttf
         # A share link handed over from elsewhere: protonstream://add?url=…,
         # or the link with its scheme swapped (IncomingShareLink.swift).
         CFBundleURLTypes: