diff --git a/astrbot/core/star/context.py b/astrbot/core/star/context.py
index a38643b34..76db898aa 100644
--- a/astrbot/core/star/context.py
+++ b/astrbot/core/star/context.py
@@ -1,7 +1,6 @@
 from asyncio import Queue
 from typing import List, Union
 
-from astrbot.core import sp
 from astrbot.core.provider.provider import (
     Provider,
     TTSProvider,
@@ -38,19 +37,6 @@ class Context:
     暴露给插件的接口上下文。
     """
 
-    _event_queue: Queue = None
-    """事件队列。消息平台通过事件队列传递消息事件。"""
-
-    _config: AstrBotConfig = None
-    """AstrBot 配置信息"""
-
-    _db: BaseDatabase = None
-    """AstrBot 数据库"""
-
-    provider_manager: ProviderManager = None
-
-    platform_manager: PlatformManager = None
-
     registered_web_apis: list = []
 
     # back compatibility
@@ -62,16 +48,19 @@ class Context:
         event_queue: Queue,
         config: AstrBotConfig,
         db: BaseDatabase,
-        provider_manager: ProviderManager = None,
-        platform_manager: PlatformManager = None,
-        conversation_manager: ConversationManager = None,
-        message_history_manager: PlatformMessageHistoryManager = None,
-        persona_manager: PersonaManager = None,
-        astrbot_config_mgr: AstrBotConfigManager = None,
+        provider_manager: ProviderManager,
+        platform_manager: PlatformManager,
+        conversation_manager: ConversationManager,
+        message_history_manager: PlatformMessageHistoryManager,
+        persona_manager: PersonaManager,
+        astrbot_config_mgr: AstrBotConfigManager,
     ):
         self._event_queue = event_queue
+        """事件队列。消息平台通过事件队列传递消息事件。"""
         self._config = config
+        """AstrBot 默认配置"""
         self._db = db
+        """AstrBot 数据库"""
         self.provider_manager = provider_manager
         self.platform_manager = platform_manager
         self.conversation_manager = conversation_manager
@@ -79,7 +68,7 @@ class Context:
         self.persona_manager = persona_manager
         self.astrbot_config_mgr = astrbot_config_mgr
 
-    def get_registered_star(self, star_name: str) -> StarMetadata:
+    def get_registered_star(self, star_name: str) -> StarMetadata | None:
         """根据插件名获取插件的 Metadata"""
         for star in star_registry:
             if star.name == star_name:
@@ -114,7 +103,7 @@ class Context:
         """
         self.provider_manager.provider_insts.append(provider)
 
-    def get_provider_by_id(self, provider_id: str) -> Provider:
+    def get_provider_by_id(self, provider_id: str) -> Provider | None:
         """通过 ID 获取对应的 LLM Provider(Chat_Completion 类型)。"""
         return self.provider_manager.inst_map.get(provider_id)
 
@@ -134,7 +123,7 @@ class Context:
         """获取所有用于 Embedding 任务的 Provider。"""
         return self.provider_manager.embedding_provider_insts
 
-    def get_using_provider(self, umo: str = None) -> Provider:
+    def get_using_provider(self, umo: str | None = None) -> Provider | None:
         """
         获取当前使用的用于文本生成任务的 LLM Provider(Chat_Completion 类型)。通过 /provider 指令切换。
 
@@ -146,7 +135,7 @@ class Context:
             umo=umo,
         )
 
-    def get_using_tts_provider(self, umo: str = None) -> TTSProvider:
+    def get_using_tts_provider(self, umo: str | None = None) -> TTSProvider:
         """
         获取当前使用的用于 TTS 任务的 Provider。
 
@@ -158,7 +147,7 @@ class Context:
             umo=umo,
         )
 
-    def get_using_stt_provider(self, umo: str = None) -> STTProvider:
+    def get_using_stt_provider(self, umo: str | None = None) -> STTProvider:
         """
         获取当前使用的用于 STT 任务的 Provider。
 
@@ -170,7 +159,7 @@ class Context:
             umo=umo,
         )
 
-    def get_config(self, umo: str = None) -> AstrBotConfig:
+    def get_config(self, umo: str | None = None) -> AstrBotConfig:
         """获取 AstrBot 的配置。"""
         if not umo:
             # using default config