feat(ai_auto_response): handle image follow-up more safely

plugins/ai_auto_response/context_builder.py

@@ -51,6 +51,9 @@ class ContextBuilder:
             "group_profile_prompt": self._build_group_profile_prompt(group_profile or {}),
             "quote_prompt": self._build_quote_prompt(quote_context or {}),
             "image_prompt": self._build_image_prompt(image_context or {}),
+            "image_safety_prompt": self._build_image_safety_prompt(
+                (quote_context or {}).get("image_safety") or {}
+            ),
             "current_message": f"{sender_name}: {content}",
         }
 
@@ -323,3 +326,18 @@ class ContextBuilder:
             f"图片说明：{image_context.get('hint', '')}" if image_context.get("hint") else "",
         ]
         return "\n".join([line for line in lines if line])
+
+    @staticmethod
+    def _build_image_safety_prompt(image_safety: Dict) -> str:
+        if not image_safety or not image_safety.get("suspected"):
+            return ""
+        if image_safety.get("has_visual_context"):
+            return "当前发言疑似是在评论图片，但本次已附带图片上下文，可以基于图片谨慎理解。"
+        reason = str(image_safety.get("reason", "") or "").strip()
+        lines = [
+            "当前发言疑似是在评论图片，但你这次没有看到图片本身。",
+            f"原因：{reason}" if reason else "",
+            "不要假装看过图，不要直接评价画面细节、人物状态、构图、文字内容或颜色元素。",
+            "如果要回，只能轻微承认信息不足，或请对方引用图片/补一句文字说明，再继续。",
+        ]
+        return "\n".join([line for line in lines if line])