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/module-layout.md

@@ -7,11 +7,11 @@
 
 ## Layout Rules
 
-1. This admin/ workspace is one **deployable** (the `Azaion.AdminApi` HTTP service) split across four production csproj projects + one e2e test csproj: `Azaion.AdminApi`, `Azaion.Services`, `Azaion.Common`, `Azaion.Test`, `e2e/Azaion.E2E`.
+1. This admin/ workspace is one **deployable** (the `Azaion.AdminApi` HTTP service) split across three production csproj projects + one e2e test csproj: `Azaion.AdminApi`, `Azaion.Services`, `Azaion.Common`, `e2e/Azaion.E2E`. (The `Azaion.Test` unit-test project was removed in cycle 2 once its only test class — `SecurityTest.cs` — was deleted along with the encrypted-download stack; no in-process unit tests remain.)
 2. Existing task specs (`_docs/02_tasks/*/AZ-*.md`) all use `Component: Admin API` as a single coarse identifier covering this entire workspace. The Per-Component Mapping below honors that convention rather than rewriting every task spec.
 3. The conceptual sub-components documented in `_docs/02_document/components/01_data_layer..05_admin_api/` are **read-time** documentation aids, not write-time ownership boundaries. They are listed under "Conceptual Sub-Components" below for reference only.
 4. Public API surface = the namespaces / interfaces exposed across csproj boundaries (`I*Service` interfaces in `Azaion.Services`, request DTOs in `Azaion.Common/Requests/`, entities in `Azaion.Common/Entities/`).
-5. Tests live in `Azaion.Test/` (in-process unit/integration) and `e2e/Azaion.E2E/` (HTTP black-box). Production code never imports from either.
+5. Tests live in `e2e/Azaion.E2E/` (HTTP black-box). Production code never imports from there.
 
 ## Per-Component Mapping
 
@@ -23,10 +23,8 @@
   - `Azaion.AdminApi/**`
   - `Azaion.Services/**`
   - `Azaion.Common/**`
-  - `Azaion.Test/**`
   - `e2e/Azaion.E2E/**` (xUnit/HttpClient-based black-box tests)
   - `e2e/db-init/**` (test-DB seed/init scripts consumed by the e2e harness)
-  - `docker.test/**` (test fixture / schema-init helpers used by `Azaion.Test`)
   - `docker-compose.test.yml`
 - **Public API** (visible to other csprojs within the workspace):
   - `Azaion.Services/I*Service.cs` interfaces (UserService, AuthService, ResourcesService, …)
@@ -54,8 +52,8 @@ These come from `_docs/02_document/components/` and exist for reading the codeba
 |---|----------------------|------------------------|
 | 1 | Data Layer           | `Azaion.Common/Database/`, `Azaion.Common/Configs/`, `Azaion.Common/Entities/` (incl. `DetectionClass.cs` added cycle 1; `Resource.cs` added then removed in same cycle — see post-cycle-1 revert) |
 | 2 | User Management      | `Azaion.Services/UserService.cs` (incl. `RegisterDevice` added cycle 1 / AZ-196 — calls `RegisterUser` end-to-end after security-audit consolidation, finding F-3), `Azaion.Common/Requests/Register{User,DeviceResponse}.cs`, `LoginRequest.cs`, `SetUserQueueOffsetsRequest.cs` |
-| 3 | Auth & Security      | `Azaion.Services/AuthService.cs`, `Azaion.Services/Security.cs` (post-AZ-197 — `GetHWHash` removed; signature simplified), `Azaion.Services/Cache.cs` |
-| 4 | Resource Management  | `Azaion.Services/ResourcesService.cs`, `Azaion.Common/Requests/GetResourceRequest.cs` (`SetHWRequest.cs` removed by AZ-197; `ResourceUpdateService.cs` + `GetUpdateRequest.cs` + `PublishResourceRequest.cs` removed when AZ-183 was reverted) |
+| 3 | Auth & Security      | `Azaion.Services/AuthService.cs`, `Azaion.Services/Security.cs` (post-cycle-2 — only `ToHash` remains; `GetApiEncryptionKey` / `EncryptTo` / `DecryptTo` removed with the encrypted-download endpoint), `Azaion.Services/Cache.cs` |
+| 4 | Resource Management  | `Azaion.Services/ResourcesService.cs` (`GetResourceRequest.cs` removed in cycle 2 with `POST /resources/get`; `SetHWRequest.cs` removed by AZ-197; `ResourceUpdateService.cs` + `GetUpdateRequest.cs` + `PublishResourceRequest.cs` removed when AZ-183 was reverted) |
 | 4b | Detection Classes    | `Azaion.Services/DetectionClassService.cs` + `Azaion.Common/Requests/{Create,Update}DetectionClassRequest.cs` (added cycle 1 / AZ-513) |
 | 5 | Admin API (HTTP)     | `Azaion.AdminApi/Program.cs`, `Azaion.AdminApi/BusinessExceptionHandler.cs`, `Azaion.AdminApi/appsettings*.json` |
 
@@ -66,7 +64,6 @@ These come from `_docs/02_document/components/` and exist for reading the codeba
 | 4. Entry / Host | `Azaion.AdminApi` | `Azaion.Services`, `Azaion.Common` |
 | 3. Application  | `Azaion.Services` | `Azaion.Common` |
 | 2. Foundation   | `Azaion.Common`   | (none) |
-| —. Tests (in-process) | `Azaion.Test`     | `Azaion.Services`, `Azaion.Common`, `Azaion.AdminApi` (integration only) |
 | —. Tests (out-of-process e2e) | `e2e/Azaion.E2E` | (none from production csprojs — HTTP only) |
 
 A reference from a lower production layer to a higher production layer is an **Architecture** finding (High severity) in `/code-review` Phase 7. Test projects may reference any production csproj; production csprojs may NOT reference test projects.
@@ -75,7 +72,7 @@ A reference from a lower production layer to a higher production layer is an **A
 
 | Language | Root | Per-component path | Public API file | Test path |
 |----------|------|-------------------|-----------------|-----------|
-| C# (.NET) | `./` (this workspace, legacy flat layout) | `./<Csproj>/` | namespace-root types in each csproj | `Azaion.Test/`, `e2e/Azaion.E2E/` |
+| C# (.NET) | `./` (this workspace, legacy flat layout) | `./<Csproj>/` | namespace-root types in each csproj | `e2e/Azaion.E2E/` |
 
 ## Notes