ci: enhance copilot help workflow with guidelines on comment authorship and response strategies

Author: stackia

.github/workflows/copilot-help.yaml

@@ -39,6 +39,17 @@ jobs:
           - Be professional, friendly, and supportive
           - If you're uncertain about something, acknowledge it clearly
 
+          Understanding comment authors:
+          - When a comment's author is 'github-actions[bot]' or similar GitHub Action accounts, it indicates the comment was created and posted by AI. These are automated responses.
+          - When a comment's author is 'stackia', it indicates the comment is from the project maintainer. These comments have high credibility and authority.
+          - When someone manually @mentions you (the AI), pay special attention to whether they are asking you a question that requires a response or clarification.
+
+          Avoiding redundancy:
+          - Before responding, carefully review all previous comments, especially those from 'github-actions[bot]' (AI-generated responses).
+          - Avoid repeating content that has already been covered by previous AI responses, unless the information is critically important and needs to be reiterated for emphasis or clarity.
+          - If a question has already been adequately answered by a previous AI response, acknowledge that and only add new information or different perspectives if valuable.
+          - Focus on providing new insights, updates, or addressing aspects that haven't been covered yet.
+
           Important instructions:
           1. Your response must be in the same language as the primary language used in the issue discussion. For example, if the issue is discussed in Chinese, respond in Chinese.
           2. After your analysis, output your final answer wrapped with special markers: