diff --git a/src/chat/planner_actions/action_manager.py b/src/chat/planner_actions/action_manager.py
index 319e966bc..f3d058efb 100644
--- a/src/chat/planner_actions/action_manager.py
+++ b/src/chat/planner_actions/action_manager.py
@@ -51,7 +51,7 @@ class ChatterActionManager:
         chat_stream: ChatStream,
         log_prefix: str,
         shutting_down: bool = False,
-        action_message: dict | None = None,
+        action_message: DatabaseMessages | None = None,
     ) -> BaseAction | None:
         """
         创建动作处理器实例
@@ -143,7 +143,7 @@ class ChatterActionManager:
         self,
         action_name: str,
         chat_id: str,
-        target_message: dict | DatabaseMessages | None = None,
+        target_message: DatabaseMessages | None = None,
         reasoning: str = "",
         action_data: dict | None = None,
         thinking_id: str | None = None,
@@ -264,10 +264,8 @@ class ChatterActionManager:
                     )
                     if not success or not response_set:
                         # 安全地获取 processed_plain_text
-                        if isinstance(target_message, DatabaseMessages):
+                        if target_message:
                             msg_text = target_message.processed_plain_text or "未知消息"
-                        elif target_message:
-                            msg_text = target_message.get("processed_plain_text", "未知消息")
                         else:
                             msg_text = "未知消息"
 
@@ -336,10 +334,7 @@ class ChatterActionManager:
             # 获取目标消息ID
             target_message_id = None
             if target_message:
-                if isinstance(target_message, DatabaseMessages):
-                    target_message_id = target_message.message_id
-                elif isinstance(target_message, dict):
-                    target_message_id = target_message.get("message_id")
+                target_message_id = target_message.message_id
             elif action_data and isinstance(action_data, dict):
                 target_message_id = action_data.get("target_message_id")
 
@@ -508,14 +503,12 @@ class ChatterActionManager:
         person_info_manager = get_person_info_manager()
 
         # 获取 platform，如果不存在则从 chat_stream 获取，如果还是 None 则使用默认值
-        if isinstance(action_message, DatabaseMessages):
+        if action_message:
             platform = action_message.chat_info.platform
             user_id = action_message.user_info.user_id
         else:
-            platform = action_message.get("chat_info_platform")
-            if platform is None:
-                platform = getattr(chat_stream, "platform", "unknown")
-            user_id = action_message.get("user_id", "")
+            platform = getattr(chat_stream, "platform", "unknown")
+            user_id = ""
 
         # 获取用户信息并生成回复提示
         person_id = person_info_manager.get_person_id(
@@ -593,11 +586,8 @@ class ChatterActionManager:
         # 根据新消息数量决定是否需要引用回复
         reply_text = ""
         # 检查是否为主动思考消息
-        if isinstance(message_data, DatabaseMessages):
-            # DatabaseMessages 对象没有 message_type 字段，默认为 False
-            is_proactive_thinking = False
-        elif message_data:
-            is_proactive_thinking = message_data.get("message_type") == "proactive_thinking"
+        if message_data:
+            is_proactive_thinking = getattr(message_data, "message_type", None) == "proactive_thinking"
         else:
             is_proactive_thinking = True
 
diff --git a/src/chat/planner_actions/action_modifier.py b/src/chat/planner_actions/action_modifier.py
index fe37c2c5b..7bedbb14e 100644
--- a/src/chat/planner_actions/action_modifier.py
+++ b/src/chat/planner_actions/action_modifier.py
@@ -2,11 +2,9 @@ import asyncio
 import hashlib
 import random
 import time
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, cast
 
-import orjson
-
-from src.chat.message_receive.chat_stream import get_chat_manager
+from src.chat.message_receive.chat_stream import ChatStream, get_chat_manager
 from src.chat.planner_actions.action_manager import ChatterActionManager
 from src.chat.utils.chat_message_builder import build_readable_messages, get_raw_msg_before_timestamp_with_chat
 from src.common.data_models.message_manager_data_model import StreamContext
@@ -34,7 +32,7 @@ class ActionModifier:
         """初始化动作处理器"""
         self.chat_id = chat_id
         # chat_stream 和 log_prefix 将在异步方法中初始化
-        self.chat_stream = None  # type: ignore
+        self.chat_stream: ChatStream | None = None
         self.log_prefix = f"[{chat_id}]"
 
         self.action_manager = action_manager
@@ -113,7 +111,7 @@ class ActionModifier:
                 logger.debug(f"{self.log_prefix} - 移除 {action_name}: {reason}")
 
         message_list_before_now_half = await get_raw_msg_before_timestamp_with_chat(
-            chat_id=self.chat_stream.stream_id,
+            chat_id=self.chat_id,
             timestamp=time.time(),
             limit=min(int(global_config.chat.max_context_size * 0.33), 10),
         )
@@ -139,6 +137,9 @@ class ActionModifier:
                     logger.debug(f"{self.log_prefix}阶段一移除动作: {disabled_action_name}，原因: 用户自行禁用")
 
         # === 第二阶段：检查动作的关联类型 ===
+        if not self.chat_stream:
+            logger.error(f"{self.log_prefix} chat_stream 未初始化，无法执行第二阶段")
+            return
         chat_context = self.chat_stream.context_manager.context
         current_actions_s2 = self.action_manager.get_using_actions()
         type_mismatched_actions = self._check_action_associated_types(current_actions_s2, chat_context)
@@ -331,6 +332,7 @@ class ActionModifier:
         deactivated_actions = []
 
         # 获取 Action 类注册表
+        from src.plugin_system.base.base_action import BaseAction
         from src.plugin_system.base.component_types import ComponentType
         from src.plugin_system.core.component_registry import component_registry
 
@@ -354,15 +356,13 @@ class ActionModifier:
             try:
                 # 创建一个最小化的实例
                 action_instance = object.__new__(action_class)
+                # 使用 cast 来“欺骗”类型检查器
+                action_instance = cast(BaseAction, action_instance)
                 # 设置必要的属性
-                action_instance.action_name = action_name
                 action_instance.log_prefix = self.log_prefix
-                # 设置聊天内容，用于激活判断
-                action_instance._activation_chat_content = chat_content
-
-                # 调用 go_activate 方法（不再需要传入 chat_content）
+                # 调用 go_activate 方法
                 task = action_instance.go_activate(
-                    llm_judge_model=self.llm_judge,
+                    llm_judge_model=self.llm_judge
                 )
                 activation_tasks.append(task)
                 task_action_names.append(action_name)
diff --git a/src/plugin_system/apis/chat_api.py b/src/plugin_system/apis/chat_api.py
index 86c53bc0a..2f2d5d1df 100644
--- a/src/plugin_system/apis/chat_api.py
+++ b/src/plugin_system/apis/chat_api.py
@@ -172,6 +172,7 @@ class ChatManager:
             for stream in get_chat_manager().streams.values():
                 if (
                     not stream.group_info
+                    and stream.user_info
                     and str(stream.user_info.user_id) == str(user_id)
                     and stream.platform == platform
                 ):
diff --git a/src/plugin_system/apis/cross_context_api.py b/src/plugin_system/apis/cross_context_api.py
index 870fe3f15..d97dcde19 100644
--- a/src/plugin_system/apis/cross_context_api.py
+++ b/src/plugin_system/apis/cross_context_api.py
@@ -32,8 +32,10 @@ async def get_context_group(chat_id: str) -> ContextGroup | None:
     if is_group:
         assert current_stream.group_info is not None
         current_chat_raw_id = current_stream.group_info.group_id
-    else:
+    elif current_stream.user_info:
         current_chat_raw_id = current_stream.user_info.user_id
+    else:
+        return None
     current_type = "group" if is_group else "private"
 
     for group in global_config.cross_context.groups:
diff --git a/src/plugin_system/apis/permission_api.py b/src/plugin_system/apis/permission_api.py
index 036b654ce..aa1626b3b 100644
--- a/src/plugin_system/apis/permission_api.py
+++ b/src/plugin_system/apis/permission_api.py
@@ -61,7 +61,7 @@ class PermissionAPI:
     def __init__(self):
         self._permission_manager: IPermissionManager | None = None
         # 需要保留的前缀（视为绝对节点名，不再自动加 plugins.<plugin>. 前缀）
-        self.RESERVED_PREFIXES: tuple[str, ...] = "system." 
+        self.RESERVED_PREFIXES: tuple[str, ...] = ("system.",)
         # 系统节点列表 (name, description, default_granted)
         self._SYSTEM_NODES: list[tuple[str, str, bool]] = [
             ("system.superuser", "系统超级管理员：拥有所有权限", False),
@@ -80,10 +80,14 @@ class PermissionAPI:
 
     async def check_permission(self, platform: str, user_id: str, permission_node: str) -> bool:
         self._ensure_manager()
+        if not self._permission_manager:
+            return False
         return await self._permission_manager.check_permission(UserInfo(platform, user_id), permission_node)
 
     async def is_master(self, platform: str, user_id: str) -> bool:
         self._ensure_manager()
+        if not self._permission_manager:
+            return False
         return await self._permission_manager.is_master(UserInfo(platform, user_id))
 
     async def register_permission_node(
@@ -109,6 +113,8 @@ class PermissionAPI:
         if original_name != node_name:
             logger.debug(f"规范化权限节点 '{original_name}' -> '{node_name}'")
         node = PermissionNode(node_name, description, plugin_name, default_granted)
+        if not self._permission_manager:
+            return False
         return await self._permission_manager.register_permission_node(node)
 
     async def register_system_permission_node(
@@ -141,18 +147,26 @@ class PermissionAPI:
 
     async def grant_permission(self, platform: str, user_id: str, permission_node: str) -> bool:
         self._ensure_manager()
+        if not self._permission_manager:
+            return False
         return await self._permission_manager.grant_permission(UserInfo(platform, user_id), permission_node)
 
     async def revoke_permission(self, platform: str, user_id: str, permission_node: str) -> bool:
         self._ensure_manager()
+        if not self._permission_manager:
+            return False
         return await self._permission_manager.revoke_permission(UserInfo(platform, user_id), permission_node)
 
     async def get_user_permissions(self, platform: str, user_id: str) -> list[str]:
         self._ensure_manager()
+        if not self._permission_manager:
+            return []
         return await self._permission_manager.get_user_permissions(UserInfo(platform, user_id))
 
     async def get_all_permission_nodes(self) -> list[dict[str, Any]]:
         self._ensure_manager()
+        if not self._permission_manager:
+            return []
         nodes = await self._permission_manager.get_all_permission_nodes()
         return [
             {
@@ -166,6 +180,8 @@ class PermissionAPI:
 
     async def get_plugin_permission_nodes(self, plugin_name: str) -> list[dict[str, Any]]:
         self._ensure_manager()
+        if not self._permission_manager:
+            return []
         nodes = await self._permission_manager.get_plugin_permission_nodes(plugin_name)
         return [
             {
diff --git a/src/plugin_system/base/plugin_base.py b/src/plugin_system/base/plugin_base.py
index c52d285ec..844fd4804 100644
--- a/src/plugin_system/base/plugin_base.py
+++ b/src/plugin_system/base/plugin_base.py
@@ -331,7 +331,7 @@ class PluginBase(ABC):
 
         try:
             with open(user_config_path, encoding="utf-8") as f:
-                user_config: ClassVar = toml.load(f) or {}
+                user_config: dict[str, Any] = toml.load(f) or {}
         except Exception as e:
             logger.error(f"{self.log_prefix} 加载用户配置文件 {user_config_path} 失败: {e}", exc_info=True)
             self.config = self._generate_config_from_schema()  # 加载失败时使用默认 schema