# Services

Business logic services and credential management.

## Key Files

- **`MeasurementServiceBase.cs`** — Abstract base with generic TLogger injection.
- **`ISecureCredentialService.cs`** — Interface: SaveCredentialsAsync (2-day expiry), GetCredentialsAsync, ClearCredentialsAsync. StoredCredentials sealed record.

Platform implementations: MAUI → SecureStorage, Web → obfuscated localStorage, Server → no-op.