consultoria-as cf46790ed8 feat(pwa): improve service worker with background sync, push, IndexedDB ...

- Bumped cache version to nexus-pos-v3
- Background sync for cart (nexus-cart-sync): replays pending
  requests from IndexedDB, clears queue on success
- Push notifications: parse payload, show notification, focus/open
  /pos/sale on click
- Offline cart strategy: queue failed POST /pos/api/cart/* in
  IndexedDB, return queued JSON response
- Message handlers: SKIP_WAITING (preserved) + CLEAR_CACHES
- Periodic background sync stub commented for future cache warming

2026-04-29 07:10:47 +00:00

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