refactor(chat): 优化跨群聊上下文构建与代码格式

对 `default_generator.py` 进行了多项重构和优化：
- 将跨群聊上下文的构建逻辑移入独立的 `_build_cross_context_block` 方法，并在主流程中异步并行执行，提高了代码的模块化和执行效率。
- 全面清理了代码中的多余空行和不一致的间距，提升了代码的可读性和一致性。
- 调整了 `NoReplyAction` 和 `ReplyAction` 的 `mode_enable` 配置，使其行为更符合预期。

src/chat/replyer/default_generator.py

@@ -230,10 +230,7 @@ class DefaultReplyer:
         self.heart_fc_sender = HeartFCSender()
         self.memory_activator = MemoryActivator()
         # 使用纯向量瞬时记忆系统V2，支持自定义保留时间
-        self.instant_memory = VectorInstantMemoryV2(
+        self.instant_memory = VectorInstantMemoryV2(chat_id=self.chat_stream.stream_id, retention_hours=1)
-            chat_id=self.chat_stream.stream_id,
-            retention_hours=1
-        )
 
         from src.plugin_system.core.tool_use import ToolExecutor  # 延迟导入ToolExecutor，不然会循环依赖
 
@@ -269,12 +266,13 @@ class DefaultReplyer:
             # normal模式：获取其他群聊的最近N条消息
             for chat_raw_id in other_chat_raw_ids:
                 stream_id = get_chat_manager().get_stream_id(current_stream.platform, chat_raw_id, is_group=True)
-                if not stream_id: continue
+                if not stream_id:
+                    continue
 
                 messages = get_raw_msg_before_timestamp_with_chat(
                     chat_id=stream_id,
                     timestamp=time.time(),
-                    limit=5  # 可配置
+                    limit=5,  # 可配置
                 )
                 if messages:
                     chat_name = get_chat_manager().get_stream_name(stream_id) or stream_id
@@ -288,21 +286,32 @@ class DefaultReplyer:
 
                 if user_id:
                     for chat_raw_id in other_chat_raw_ids:
-                        stream_id = get_chat_manager().get_stream_id(current_stream.platform, chat_raw_id, is_group=True)
+                        stream_id = get_chat_manager().get_stream_id(
-                        if not stream_id: continue
+                            current_stream.platform, chat_raw_id, is_group=True
+                        )
+                        if not stream_id:
+                            continue
 
                         messages = get_raw_msg_before_timestamp_with_chat(
                             chat_id=stream_id,
                             timestamp=time.time(),
-                            limit=20 # 获取更多消息以供筛选
+                            limit=20,  # 获取更多消息以供筛选
                         )
-                        user_messages = [msg for msg in messages if msg.get('user_id') == user_id][-5:] # 筛选并取最近5条
+                        user_messages = [msg for msg in messages if msg.get("user_id") == user_id][
+                            -5:
+                        ]  # 筛选并取最近5条
 
                         if user_messages:
                             chat_name = get_chat_manager().get_stream_name(stream_id) or stream_id
-                            user_name = target_user_info.get("person_name") or target_user_info.get("user_nickname") or user_id
+                            user_name = (
-                            formatted_messages, _ = build_readable_messages_with_id(user_messages, timestamp_mode="relative")
+                                target_user_info.get("person_name") or target_user_info.get("user_nickname") or user_id
-                            cross_context_messages.append(f"[以下是“{user_name}”在“{chat_name}”的近期发言]\n{formatted_messages}")
+                            )
+                            formatted_messages, _ = build_readable_messages_with_id(
+                                user_messages, timestamp_mode="relative"
+                            )
+                            cross_context_messages.append(
+                                f"[以下是“{user_name}”在“{chat_name}”的近期发言]\n{formatted_messages}"
+                            )
 
         if not cross_context_messages:
             return ""
@@ -567,27 +576,22 @@ class DefaultReplyer:
                 try:
                     from src.chat.memory_system.async_memory_optimizer import (
                         retrieve_memory_nonblocking,
-                        store_memory_nonblocking
+                        store_memory_nonblocking,
                     )
 
                     # 异步存储聊天历史（非阻塞）
-                    asyncio.create_task(store_memory_nonblocking(
+                    asyncio.create_task(
-                        chat_id=self.chat_stream.stream_id,
+                        store_memory_nonblocking(chat_id=self.chat_stream.stream_id, content=chat_history)
-                        content=chat_history
+                    )
-                    ))
 
                     # 尝试从缓存获取瞬时记忆
-                    instant_memory = await retrieve_memory_nonblocking(
+                    instant_memory = await retrieve_memory_nonblocking(chat_id=self.chat_stream.stream_id, query=target)
-                        chat_id=self.chat_stream.stream_id,
-                        query=target
-                    )
 
                     # 如果没有缓存结果，快速检索一次
                     if instant_memory is None:
                         try:
                             instant_memory = await asyncio.wait_for(
-                                self.instant_memory.get_memory_for_context(target),
+                                self.instant_memory.get_memory_for_context(target), timeout=1.5
-                                timeout=1.5
                             )
                         except asyncio.TimeoutError:
                             logger.warning("瞬时记忆检索超时，使用空结果")
@@ -606,7 +610,7 @@ class DefaultReplyer:
                     try:
                         instant_memory = await asyncio.wait_for(
                             self.instant_memory.get_memory_for_context(target),
-                            timeout=1.0  # 最保守的1秒超时
+                            timeout=1.0,  # 最保守的1秒超时
                         )
                     except asyncio.TimeoutError:
                         logger.warning("瞬时记忆检索超时，跳过记忆获取")
@@ -958,7 +962,12 @@ class DefaultReplyer:
             show_actions=True,
         )
 
-        # 并行执行五个构建任务
+        # 获取目标用户信息，用于s4u模式
+        target_user_info = None
+        if sender:
+            target_user_info = await person_info_manager.get_person_info_by_name(sender)
+        
+        # 并行执行六个构建任务
         task_results = await asyncio.gather(
             self._time_and_run_task(
                 self.build_expression_habits(chat_talking_prompt_short, target), "expression_habits"
@@ -969,6 +978,7 @@ class DefaultReplyer:
                 self.build_tool_info(chat_talking_prompt_short, reply_to, enable_tool=enable_tool), "tool_info"
             ),
             self._time_and_run_task(self.get_prompt_info(chat_talking_prompt_short, reply_to), "prompt_info"),
+            self._time_and_run_task(self._build_cross_context_block(chat_id, target_user_info), "cross_context"),
         )
 
         # 任务名称中英文映射
@@ -995,7 +1005,8 @@ class DefaultReplyer:
         relation_info = results_dict["relation_info"]
         memory_block = results_dict["memory_block"]
         tool_info = results_dict["tool_info"]
-        prompt_info = results_dict["prompt_info"]  # 直接使用格式化后的结果
+        prompt_info = results_dict["prompt_info"]
+        cross_context_block = results_dict["cross_context"]
 
         keywords_reaction_prompt = await self.build_keywords_reaction_prompt(target)
 
@@ -1147,13 +1158,14 @@ class DefaultReplyer:
                 identity=identity_block,
                 schedule_block=schedule_block,
                 action_descriptions=action_descriptions,
-                time_block=time_block,  # 保留time_block参数
+                time_block=time_block,
                 chat_info=chat_info,
                 reply_target_block=reply_target_block,
                 mood_state=mood_prompt,
                 config_expression_style=config_expression_style,
                 keywords_reaction_prompt=keywords_reaction_prompt,
                 moderation_prompt=moderation_prompt_block,
+                cross_context_block=cross_context_block,
             )
             return result
         else:
@@ -1192,6 +1204,7 @@ class DefaultReplyer:
                 reply_style=global_config.personality.reply_style,
                 keywords_reaction_prompt=keywords_reaction_prompt,
                 moderation_prompt=moderation_prompt_block,
+                cross_context_block=cross_context_block,
             )
             logger.debug(f"[Prompt模式调试] s4u format_prompt调用完成，结果预览: {result[:200]}...")
             return result

src/plugins/built_in/core_actions/no_reply.py

@@ -16,7 +16,7 @@ class NoReplyAction(BaseAction):
 
     focus_activation_type = ActionActivationType.ALWAYS  # 修复：在focus模式下应该始终可用
     normal_activation_type = ActionActivationType.ALWAYS  # 修复：在normal模式下应该始终可用
-    mode_enable = ChatMode.FOCUS | ChatMode.NORMAL  # 修复：在所有模式下都可用
+    mode_enable = ChatMode.FOCUS  # 修复：在所有模式下都可用 # 二次修复:这玩意只有专注下才有用的好吗
     parallel_action = False
 
     # 动作基本信息

src/plugins/built_in/core_actions/reply.py

@@ -16,7 +16,7 @@ class ReplyAction(BaseAction):
 
     focus_activation_type = ActionActivationType.ALWAYS
     normal_activation_type = ActionActivationType.ALWAYS
-    mode_enable = ChatMode.FOCUS | ChatMode.NORMAL
+    mode_enable = ChatMode.ALL
     parallel_action = False
 
     # 动作基本信息