Try catches, ensuring SuccessStatusCode

Models/Configuration.cs

@@ -16,6 +16,7 @@ public class Configuration(IConfiguration config)
     
     public int CheckDocumentsToProcessJobPeriodSeconds { get; set; } = int.Parse(config["Settings:CheckDocumentsToProcessJobPeriodSeconds"] ?? throw new InvalidOperationException("Configuration not found  \"Settings:CheckDocumentsToProcessJobPeriodSeconds\""));
     
+    public string ApiMasterToken { get; set; } = config["TokenGenerator:MasterTokenHash"] ?? throw new InvalidOperationException("Configuration not found  \"TokenGenerator:MasterTokenHash\"");
 
     public string SystemPrompt { get; set; } = File.ReadAllText(Path.Combine(AppContext.BaseDirectory, "Prompts", "llm-system-prompt.txt")) ?? throw new InvalidOperationException("File \"SystemPrompt\" not found.");
     public string Prompt { get; set; } = File.ReadAllText(Path.Combine(AppContext.BaseDirectory, "Prompts", "llm-prompt.txt")) ?? throw new InvalidOperationException("File \"Prompt\" not found.");