fix: fix bug that title generation doesn't work sometimes (casibase#1454)

Author: LeTeddy

carrier/suggestion.go

@@ -47,7 +47,7 @@ Here is the user's question: %s`
 
 1. **Generate an answer**: Provide a clear, accurate, and helpful answer to the user's question.
 
-2. **Predict possible follow-up questions from the user**: Based on the current question and answer, think and predict three questions that the user might ask further.
+2. **Predict possible follow-up questions from the user's query**: Based on the current question and answer, think and predict three questions that the user might ask further.
 
 3. **Format the answer and predicted questions**: Use a specific format to connect the answer and the predicted questions. The format is as follows:
    - Follow the answer with a separator "%s"
@@ -56,7 +56,7 @@ Here is the user's question: %s`
 Your answer should be replied in the following format: %s
 
 The '<>' is to tell you to put something in here, your answer does not need to include '<>'.
-The language of suggestions should be the same as the language of answer
+The language of suggestions should be the same as the language of answer.
 Every Predicted question should end with a question mark '?'.
 
 Please note, the separator for each part is "%s", make sure not to use this separator in the answer or question.

carrier/title.go

@@ -32,9 +32,11 @@ func (p *TitleCarrier) GetQuestion(question string) (string, error) {
 
 	format := "<title>"
 	question = question +
-		"\n\nYour reasoning and response must be in the same language as user's question." +
-		"\n\n**At the end of your answer, if and only if a clear, concise, and meaningful title can be generated to summarize the content, append it.**\n" +
-		"The title should appear at the very end of the response, prefixed by: " + p.divider + "\n" +
+		"\n\n**At the end of your answer, if and only if a clear, concise, and meaningful topic title can be generated — based on both the user's input and your response — then append it.**\n" +
+		"A meaningful topic title should be able to represent the user's purpose or the overall theme of this conversation.\n" +
+		"Examples of generated title:\n" +
+		"\tquery: what is casibase? title: introduction to casibase\n" +
+		"It should appear at the very end of the response, prefixed by: " + p.divider + "\n" +
 		"Do not include the divider or title if a meaningful title cannot be generated.\n" +
 		"Format:\n<Your complete answer>\n" + p.divider + format + "\n"
 

controllers/message_carrier.go

@@ -107,8 +107,9 @@ They must:
 	if needTitle {
 		fullPrompt.WriteString(`
 **Finally, generate a concise and meaningful title for the original question. No need to answer user question. 
-
-- The title must be in the same language.
+A meaningful topic title should be able to represent the user's purpose or the overall theme of this conversation.
+Examples of generated title:
+	query: what is casibase? title: introduction to casibase
 - The title must start with "=====" (five equals signs, no space).
 - Do not include the divider or title if a meaningful title cannot be generated.
 - Do NOT include any explanations or extra text—just output the title.`)