Fix: Add all required types to JsonSerializerContext for AOT compatibility

- Added all request/response records to AppJsonSerializerContext
- Added infrastructure service types for proper serialization
- Resolves HTTP 503 error caused by JsonTypeInfo metadata issues
- Ensures compatibility with .NET 8 AOT compilation

Author: Manus AI

backend/src/AutoDocOps.Api/AutoDocOps.Api/Program.cs

@@ -210,6 +210,51 @@ private static async Task ConfigurePipeline(WebApplication app)
 /// </summary>
 [JsonSerializable(typeof(AutoDocOps.Api.DTOs.ApiInfoResponse))]
 [JsonSerializable(typeof(AutoDocOps.Api.Middleware.ErrorResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.AnalyzeDotNetRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.AnalyzeDotNetResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.AnalyzeSqlServerRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.AnalyzeSqlServerResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateGuidesRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateGuidesResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GeneratePostmanRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GeneratePostmanResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateTypeScriptSDKRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateCSharpSDKRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateSDKResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.SemanticChatRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.SemanticChatResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateERDiagramRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateERDiagramResponse))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateDataDictionaryRequest))]
+[JsonSerializable(typeof(AutoDocOps.Api.Endpoints.GenerateDataDictionaryResponse))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.CodeMetadata))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.DatabaseSchemaResult))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ControllerInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ModelInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ServiceInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.TableInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ColumnInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.IndexInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ActionInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ParameterInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ViewInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.StoredProcedureInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.FunctionInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.ForeignKeyInfo))]
+[JsonSerializable(typeof(AutoDocOps.Infrastructure.Services.DatabaseMetadata))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ControllerInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ModelInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ServiceInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.TableInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ColumnInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.IndexInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ActionInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ParameterInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ViewInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.StoredProcedureInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.FunctionInfo>))]
+[JsonSerializable(typeof(List<AutoDocOps.Infrastructure.Services.ForeignKeyInfo>))]
+[JsonSerializable(typeof(List<string>))]
 [JsonSerializable(typeof(string))]
 [JsonSerializable(typeof(int))]
 [JsonSerializable(typeof(bool))]