## Summary
- Prevents the landing page from briefly flashing before redirecting to
`/dashboard` when accessing from an installed PWA
- Detects standalone mode synchronously via a `useState` initializer so
the spinner renders on the very first paint
- Shows a centered loading spinner instead of the full landing page
while the redirect happens
## Test plan
- [x] Open the app as an installed PWA and verify a spinner shows
instead of the landing page before redirecting to dashboard
- [x] Open the landing page in a regular browser and verify the full
landing page renders normally with no spinner
This PR simplifies the IndexedDB synchronization mechanism by removing
individual sync controllers and services, and instead using Inertia.js
shared props to provide data globally across the application.
## Benefits
1. **Simplified Architecture**: Removed complex sync logic for
static/semi-static data (accounts, categories, banks, labels, automation
rules)
2. **Better Performance**: Data is now shared via Inertia props,
eliminating unnecessary API calls and IndexedDB operations
3. **Reduced Complexity**: Significantly reduced codebase size (~2000
lines removed)
4. **Better UX**: Data is immediately available on page load without
waiting for sync operations
5. **Maintainability**: Fewer moving parts means easier to maintain and
debug
## Migration Notes
- Transaction syncing still uses IndexedDB for offline support
- All other data (accounts, categories, banks, labels, automation rules)
is now fetched via Inertia shared props
- Components automatically receive updated data on navigation without
manual sync operations
Víctor Falcón