Files
Learn_System/frontend
Maxim Dolgolyov 29ef974e35 feat(biochem): skeleton loaders for async fetches
Replace plain "Загрузка..." placeholders with shimmer-animated skeletons
matching the actual layout shape:
- library: 12 placeholder cards (canvas + 2 lines)
- reactions: 6 row skeletons (stripe + title + 2 text lines)
- properties: 10 sidebar row shimmers (thumb + 2 lines)
- biochem editor: 4-5 row skeletons for saved-molecules and challenges lists

No existing skeleton classes in ls.css; added local .bc-sk-* helpers per page.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-20 19:49:54 +03:00
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