## Summary
- Increases the retry delays in `_resolveDatabasePath()` from `[100, 300, 600]` ms (~1 s) to `[200, 500, 1000, 2000]` ms (~3.7 s).
- Adds a regression test (`test/unit/database_path_test.dart`) that verifies `initDatabasePath()` does not throw when the `path_provider` channel is unavailable.
## Root cause
On some slow Android devices (e.g. the Motorola reported in #166), the `path_provider` Pigeon channel is not ready even several seconds after `runApp()` returns. The previous back-off budget of ~1 s was not enough, causing `_resolveDatabasePath()` to exhaust all retries and throw a `PlatformException`, crashing the app with the message shown in the issue.
## Test plan
- [ ] `flutter test test/unit/database_path_test.dart` passes (new regression test)
- [ ] `flutter test test/unit/` — all 325 unit tests pass
- [ ] `flutter analyze` — no issues
Fixes#166
Co-authored-by: Thomas SharedInbox <sharedinbox@thomas-guettler.de>
Reviewed-on: https://codeberg.org/guettli/sharedinbox/pulls/169
Bot of Thomas Güttler