fix for commenting on chat, and updating docs.

tools/ai-review/agents/issue_agent.py

@@ -153,14 +153,17 @@ class IssueAgent(BaseAgent):
         comment = context.event_data.get("comment", {})
         issue_index = issue.get("number")
         comment_body = comment.get("body", "")
+        comment_author = comment.get("user", {}).get("login", "user")
 
         # Parse command from mention
         command = self._parse_command(comment_body)
 
         if command:
             response = self._handle_command(context, issue, command)
+            # Add user mention at the top
+            response_with_mention = f"@{comment_author}\n\n{response}"
             self.gitea.create_issue_comment(
-                context.owner, context.repo, issue_index, response
+                context.owner, context.repo, issue_index, response_with_mention
             )
             return AgentResult(
                 success=True,