feat(catalog): complete UI redesign with admin mode & favorites

- Modern card-based layout with vertical icon rail, breadcrumb nav, inline search
- Admin mode: edit/create/delete pages and offers, drag & drop reorder via HK API
- Favorites system: heart on furni, star on pages, localStorage persistence
- Redesigned product card with price pills, dynamic quantity spinner
- Upgraded trophies (filter tabs, parchment textarea), pets (breed/color flow),
  custom prefix (dynamic color boxes)
- Font fix: Ubuntu Regular, proper @font-face declarations
- New Tailwind design tokens and CatalogTexts.json for localization

catalog_favorites.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS catalog_favorites (
+    user_id INT NOT NULL,
+    type ENUM('offer', 'page') NOT NULL,
+    target_id INT NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (user_id, type, target_id)
+);