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feat: implement Paranoid Mode (SWR for Navigation)

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robin
2025-12-20 23:22:02 +01:00
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OFFLINE_SYNC_PWA.md
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@@ -62,12 +62,12 @@ A critical feature is the ability to link tasting notes to a bottle that hasn't
## 📱 PWA Features
### Service Worker (`public/sw.js`) - "Ironclad" Strategy
The Service Worker implements an aggressive offline reliability strategy:
### Service Worker (`public/sw.js`) - "Paranoid Mode" Strategy
The Service Worker implements an extremely resilient "Cache-First, Network-Background" strategy for navigation:
- **Pre-Caching**: The landing page (`/`), core static assets, and the sessions overview (`/sessions`) are cached during installation.
- **Fail-Fast Navigation**: Navigation requests have a 3-second timeout to prevent UI hangs during network transitions.
- **Root App Shell Fallback**: If a URL is not found in the cache while offline, the SW serves the Root (`/`). This allows Next.js to bootstrap and handle the routing client-side (including Scan and Note features embedded on the homepage) using local Dexie data.
- **SWR Navigation**: Navigation requests are handled with Stale-While-Revalidate. The SW serves the cached version immediately (instant load) and refreshes the cache in the background.
- **Universal Root Fallback**: If a URL is not found in the cache while offline, the SW serves the Root (`/`). This allows Next.js to bootstrap and handle the routing client-side (including Scan and Note features) using local Dexie data.
- **RSC Data Resiliency**: Requests to `/_next/data/` return an empty JSON object if they fail, preventing "Application Error" screens.
- **Stale-While-Revalidate**: Applied to static assets to ensure immediate UI response.