feat(plugin): 集成 MCP 协议支持并优化代码风格

- 新增 fastmcp 依赖，支持通过 Streamable HTTP 连接外部工具服务器
- 在 component_registry 与 tool_api 中实现 MCP 工具加载、注册及调用链路
- 补充 README 中的 MCP 特性说明
- 统一修复多处 import 顺序、空行、引号及类型注解，提升代码整洁度
- 在 pyproject.toml 中忽略 PERF203 规则，允许循环内异常处理
- 优化语音缓存与本地 ASR 调用逻辑，减少冗余代码

src/plugins/built_in/stt_whisper_plugin/__init__.py

@@ -6,4 +6,4 @@ __plugin_meta__ = PluginMetadata(
     usage="在 bot_config.toml 中将 asr_provider 设置为 'local' 即可启用",
     version="0.1.0",
     author="Elysia",
-)
+)

src/plugins/built_in/stt_whisper_plugin/plugin.py

@@ -1,9 +1,4 @@
 import asyncio
-import os
-import tempfile
-from typing import Any
-from pathlib import Path
-import toml
 
 import whisper
 
@@ -40,7 +35,7 @@ class LocalASRTool(BaseTool):
                 model_size = plugin_config.get("whisper", {}).get("model_size", "tiny")
                 device = plugin_config.get("whisper", {}).get("device", "cpu")
                 logger.info(f"正在预加载 Whisper ASR 模型: {model_size} ({device})")
-                
+
                 loop = asyncio.get_running_loop()
                 _whisper_model = await loop.run_in_executor(
                     None, whisper.load_model, model_size, device
@@ -61,10 +56,10 @@ class LocalASRTool(BaseTool):
         # 增强的等待逻辑：只要模型还没准备好，就一直等待后台加载任务完成
         while _is_loading:
             await asyncio.sleep(0.2)
-        
+
         if _whisper_model is None:
             return "Whisper 模型加载失败，无法识别语音。"
-        
+
         try:
             logger.info(f"开始使用 Whisper 识别音频: {audio_path}")
             loop = asyncio.get_running_loop()
@@ -110,6 +105,6 @@ class STTWhisperPlugin(BasePlugin):
                 ), LocalASRTool)]
         except Exception as e:
             logger.error(f"检查 ASR provider 配置时出错: {e}")
-        
+
         logger.debug("ASR provider is not 'local', whisper plugin's tool is disabled.")
         return []

src/plugins/built_in/tts_voice_plugin/actions/tts_action.py

@@ -6,9 +6,9 @@ from pathlib import Path
 
 import toml
 
+from src.chat.utils.self_voice_cache import register_self_voice
 from src.common.logger import get_logger
 from src.plugin_system.base.base_action import BaseAction, ChatMode
-from src.chat.utils.self_voice_cache import register_self_voice
 
 from ..services.manager import get_service
 

src/plugins/built_in/web_search_tool/__init__.py

@@ -15,7 +15,7 @@ __plugin_meta__ = PluginMetadata(
         "is_built_in": True,
     },
     # Python包依赖列表
-    python_dependencies = [  # noqa: RUF012
+    python_dependencies = [
         PythonDependency(package_name="asyncddgs", description="异步DuckDuckGo搜索库", optional=False),
         PythonDependency(
             package_name="exa_py",