feat(tasks): vinyl sticker album + fridge-calendar rewards redesign

Replace the pokedex grid on /tasks/rewards with a scrapbook "sticker album":
category pages on warm paper, die-cut glossy vinyl stickers (debossed
silhouettes for missing ones), rarity-scaled holo shine/foil/glow, and a
large sticker-themed detail popup on click. Pages sort by rarity (rarest
category + sticker first; "Allerlei" catch-all last); each category has an
info popover explaining how its stickers drop, with the /tasks tag icons.

Restyle the calendar as a cozy fridge wall-calendar (paper, washi tape,
Fredoka month, cats stuck on dates as tilted die-cut stickers, weekend
tint). Shows only the current user by default; tap a name in the monthly
tally to fold in the other household member (per-person colour dots).

Export ALWAYS_CATEGORIES + getTagsForCategory from stickers util.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.95.4",
+	"version": "1.96.0",
 	"private": true,
 	"type": "module",
 	"scripts": {