Fixed and improved the system prompt of chats started from assistants (#1172)

app/MindWork AI Studio/Assistants/JobPosting/AssistantJobPostings.razor.cs

@@ -12,6 +12,9 @@ public partial class AssistantJobPostings : AssistantBaseCore<SettingsDialogJobP
     
     protected override string Description => T("Provide some key points about the job you want to post. The AI will then formulate a suggestion that you can finalize.");
     
+    // The prompt of this assistant forbids questions, so the chat gets a prompt of its own, which keeps the role and the language:
+    protected override ChatSystemPromptChoice ChatSystemPrompt => ChatSystemPromptChoice.Custom(this.CreateChatSystemPrompt);
+
     protected override string SystemPrompt => 
         $"""
         You are an experienced specialist in personnel matters. You write job postings.
@@ -41,6 +44,23 @@ public partial class AssistantJobPostings : AssistantBaseCore<SettingsDialogJobP
         
         You write the job posting in the following language: {this.SystemPromptLanguage()}.
         """;
+
+    /// <summary>
+    /// Creates the system prompt of a chat which continues a job posting, for follow-up questions about it.
+    /// </summary>
+    private string CreateChatSystemPrompt() =>
+        $"""
+        You are an experienced specialist in personnel matters. You write job postings and follow the usual guidelines
+        in the country of the posting. You ensure that no individuals are discriminated against or excluded by a job
+        posting. The user had a job posting written: the conversation so far holds the details the user gave and the
+        job posting. Now you answer the user's follow-up questions about the job posting, e.g., why it asks for a
+        qualification or how inclusive a wording is, and you revise the job posting when the user asks for it. A revised
+        version is always the complete job posting, in Markdown, with the structure of the job posting in this
+        conversation.
+
+        You write the job posting in the following language: {this.SystemPromptLanguage()}.
+        Answer questions in the language the user writes in.
+        """;
     
     protected override IReadOnlyList<IButtonData> FooterButtons => [];