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/04_deploy/reports/deploy_status_report.md

@@ -80,8 +80,6 @@ API has no outbound calls to external SaaS APIs (no SSRF surface).
 | `ASPNETCORE_JwtConfig__Audience` | JWT `aud` claim | All | `Annotators/OrangePi/Admins` (appsettings) | appsettings or env override |
 | `ASPNETCORE_JwtConfig__TokenLifetimeHours` | Token TTL | All | `4` (appsettings) | Environment |
 | `ASPNETCORE_ResourcesConfig__ResourcesFolder` | File storage root | All | `Content` | Environment |
-| `ASPNETCORE_ResourcesConfig__SuiteInstallerFolder` | Prod installer dir | All | `suite` | Environment |
-| `ASPNETCORE_ResourcesConfig__SuiteStageInstallerFolder` | Stage installer dir | All | `suite-stage` | Environment |
 | `CI_COMMIT_SHA` | Build-time label → `AZAION_REVISION` env in container | Build only | (unset → `unknown`) | Woodpecker `$CI_COMMIT_SHA` |
 | `DEPLOY_HOST` | Remote target machine for `scripts/deploy.sh` | Deploy scripts | `admin.azaion.com` | Environment |
 | `DEPLOY_SSH_USER` | SSH user on `DEPLOY_HOST` | Deploy scripts | `root` | Environment |