Maurice ce1fa68c84 feat(appearance): Halloween special theme with 3D decor and a costumed mascot ...

Adds a Special Themes row to Settings > Appearance > Theme. Halloween is a
scheme on the existing data-scheme axis that is always dark: the applier and
the boot script force .dark while it is on, and the color mode control is
dimmed with a hint.

- Palette for the whole app (surfaces, dashboard, Vacay glass, Journey,
  mobile chrome) in theme/special/halloween.tokens.css, loaded with index.css.
- Decor as a lazy chunk mounted by SpecialThemeLayer while the scheme is on:
  fog, embers, bat flocks, a passing ghost, corner cobwebs, spiders that drop
  on a thread and flee when poked, a pumpkin patch and an ember running along
  the navbar. Figures are pre-rendered 3D sprite sheets.
- Nothing is drawn over a map: the Atlas gets no decor, the trip planner only
  dresses its side panels. Marker clusters turn into lanterns.
- The 3D mascot plays its own Halloween clips in every scene (witch hat, a
  spider on the brim, a lit pumpkin beside it); the SVG fallback wears the
  same costume.
- Reduced motion stills everything, transparency off drops the fog, shared
  pages never show it.
- Navbar, bottom nav, notifications, Atlas and Collections read the dark flag
  off the .dark class instead of settings.dark_mode, so a forced dark theme
  reaches them.

2026-10-18 12:59:36 +02:00

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