feat(dgw): explain rejected requests in API error responses

devolutions-gateway/openapi/dotnet-client/.openapi-generator/FILES

@@ -25,6 +25,7 @@ docs/AiAnalysisSucceededPayload.md
 docs/AiAnalysisTask.md
 docs/AiAnalysisUsage.md
 docs/AiProvider.md
+docs/ApiError.md
 docs/AppCredential.md
 docs/AppCredentialKind.md
 docs/AppTokenContentType.md
@@ -40,6 +41,7 @@ docs/DeleteManyResult.md
 docs/DiagnosticsApi.md
 docs/EnrollRequest.md
 docs/EnrollResponse.md
+docs/ErrorCode.md
 docs/EventOutcomeResponse.md
 docs/GetUpdateProductsResponse.md
 docs/GetUpdateScheduleResponse.md
@@ -157,6 +159,7 @@ src/Devolutions.Gateway.Client/Model/AiAnalysisSucceededPayload.cs
 src/Devolutions.Gateway.Client/Model/AiAnalysisTask.cs
 src/Devolutions.Gateway.Client/Model/AiAnalysisUsage.cs
 src/Devolutions.Gateway.Client/Model/AiProvider.cs
+src/Devolutions.Gateway.Client/Model/ApiError.cs
 src/Devolutions.Gateway.Client/Model/AppCredential.cs
 src/Devolutions.Gateway.Client/Model/AppCredentialKind.cs
 src/Devolutions.Gateway.Client/Model/AppTokenContentType.cs
@@ -170,6 +173,7 @@ src/Devolutions.Gateway.Client/Model/DataEncoding.cs
 src/Devolutions.Gateway.Client/Model/DeleteManyResult.cs
 src/Devolutions.Gateway.Client/Model/EnrollRequest.cs
 src/Devolutions.Gateway.Client/Model/EnrollResponse.cs
+src/Devolutions.Gateway.Client/Model/ErrorCode.cs
 src/Devolutions.Gateway.Client/Model/EventOutcomeResponse.cs
 src/Devolutions.Gateway.Client/Model/GetUpdateProductsResponse.cs
 src/Devolutions.Gateway.Client/Model/GetUpdateScheduleResponse.cs

devolutions-gateway/openapi/dotnet-client/README.md

@@ -4,7 +4,7 @@ Protocol-aware fine-grained relay server
 
 This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project:
 
-- API version: 2026.2.4
+- API version: 2026.3.3
 - SDK version: 2026.9.2
 - Generator version: 7.9.0
 - Build package: org.openapitools.codegen.languages.CSharpClientCodegen
@@ -156,7 +156,7 @@ Class | Method | HTTP request | Description
 *JrecApi* | [**ListRecordings**](docs/JrecApi.md#listrecordings) | **GET** /jet/jrec/list | Lists all recordings stored on this instance
 *JrecApi* | [**PullRecordingFile**](docs/JrecApi.md#pullrecordingfile) | **GET** /jet/jrec/pull/{id}/{filename} | Retrieves a recording file for a given session
 *JrecApi* | [**PullRecordingSession**](docs/JrecApi.md#pullrecordingsession) | **GET** /jet/jrec/pull/{id} | Downloads an entire recorded session as a ZIP archive
-*JrecApi* | [**SearchRecordings**](docs/JrecApi.md#searchrecordings) | **POST** /jet/jrec/search | Searches the `.slog` artifacts, such as AI analysis logs, of recordings stored on this instance
+*JrecApi* | [**SearchRecordings**](docs/JrecApi.md#searchrecordings) | **POST** /jet/jrec/search | Searches the `.slog` files of recordings stored on this instance, such as Active Directory Console logs
 *JrlApi* | [**GetJrlInfo**](docs/JrlApi.md#getjrlinfo) | **GET** /jet/jrl/info | Retrieves current JRL (Json Revocation List) info
 *JrlApi* | [**UpdateJrl**](docs/JrlApi.md#updatejrl) | **POST** /jet/jrl | Updates JRL (Json Revocation List) using a JRL token
 *NetApi* | [**GetNetConfig**](docs/NetApi.md#getnetconfig) | **GET** /jet/net/config | Lists network interfaces
@@ -205,6 +205,7 @@ Class | Method | HTTP request | Description
  - [Model.AiAnalysisTask](docs/AiAnalysisTask.md)
  - [Model.AiAnalysisUsage](docs/AiAnalysisUsage.md)
  - [Model.AiProvider](docs/AiProvider.md)
+ - [Model.ApiError](docs/ApiError.md)
  - [Model.AppCredential](docs/AppCredential.md)
  - [Model.AppCredentialKind](docs/AppCredentialKind.md)
  - [Model.AppTokenContentType](docs/AppTokenContentType.md)
@@ -218,6 +219,7 @@ Class | Method | HTTP request | Description
  - [Model.DeleteManyResult](docs/DeleteManyResult.md)
  - [Model.EnrollRequest](docs/EnrollRequest.md)
  - [Model.EnrollResponse](docs/EnrollResponse.md)
+ - [Model.ErrorCode](docs/ErrorCode.md)
  - [Model.EventOutcomeResponse](docs/EventOutcomeResponse.md)
  - [Model.GetUpdateProductsResponse](docs/GetUpdateProductsResponse.md)
  - [Model.GetUpdateScheduleResponse](docs/GetUpdateScheduleResponse.md)