refactor: remove obsolete resource download and installer endpoints

- Deleted the `POST /resources/get/{dataFolder?}` and `GET /resources/get-installer` endpoints as part of the architectural shift towards simplified resource management.
- Removed associated methods and configurations, including `ResourcesService.GetEncryptedResource`, `ResourcesService.GetInstaller`, and related properties in `ResourcesConfig`.
- Cleaned up environment variables and configuration files to reflect the removal of installer-related settings.
- Eliminated the `GetResourceRequest` DTO and its validator, along with the `WrongResourceName` error code.
- Updated documentation to clarify the changes in resource handling and the retirement of per-user file encryption.

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/02_document/modules/services_user_service.md

@@ -63,5 +63,7 @@ PostgreSQL via `IDbFactory`.
 - Read operations use the read-only DB connection; writes use the admin connection.
 
 ## Tests
-- `Azaion.Test/UserServiceTest.cs` — unit/integration tests against the live test database (hardware-binding tests removed by AZ-197)
 - `e2e/Azaion.E2E/Tests/DeviceTests.cs` — e2e for AZ-196 device-provisioning ACs
+- `e2e/Azaion.E2E/Tests/UserManagementTests.cs` and `LoginTests.cs` — e2e coverage for the rest of the user lifecycle (login, register, role change, enable/disable, delete, queue offsets)
+
+(Unit-test coverage in `Azaion.Test/UserServiceTest.cs` was removed earlier with the AZ-197 hardware-binding cleanup; the `Azaion.Test` project itself was removed from the solution in cycle 2 once its only remaining file — `SecurityTest.cs` — was deleted with the encrypted-download stack.)