feat: 移除记忆图系统插件，优化记忆管理器的初始化和数据目录配置

plugins/memory_graph_plugin/__init__.py

@@ -1,20 +0,0 @@
-"""
-记忆系统插件
-
-集成记忆管理功能到 Bot 系统中
-"""
-
-from src.plugin_system.base.plugin_metadata import PluginMetadata
-
-__plugin_meta__ = PluginMetadata(
-    name="记忆图系统 (Memory Graph)",
-    description="基于图的记忆管理系统，支持记忆创建、关联和检索",
-    usage="LLM 可以通过工具调用创建和管理记忆，系统自动在回复时检索相关记忆",
-    version="0.1.0",
-    author="MoFox-Studio",
-    license="GPL-v3.0",
-    repository_url="https://github.com/MoFox-Studio",
-    keywords=["记忆", "知识图谱", "RAG", "长期记忆"],
-    categories=["AI", "Knowledge Management"],
-    extra={"is_built_in": False, "plugin_type": "memory"},
-)

plugins/memory_graph_plugin/plugin.py

@@ -1,85 +0,0 @@
-"""
-记忆系统插件主类
-"""
-
-from typing import ClassVar
-
-from src.common.logger import get_logger
-from src.plugin_system import BasePlugin, register_plugin
-
-logger = get_logger("memory_graph_plugin")
-
-# 用于存储后台任务引用
-_background_tasks = set()
-
-
-@register_plugin
-class MemoryGraphPlugin(BasePlugin):
-    """记忆图系统插件"""
-
-    plugin_name = "memory_graph_plugin"
-    enable_plugin = True
-    dependencies: ClassVar = []
-    python_dependencies: ClassVar = []
-    config_file_name = "config.toml"
-    config_schema: ClassVar = {}
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        logger.info(f"{self.log_prefix} 插件已加载")
-
-    def get_plugin_components(self):
-        """返回插件组件列表"""
-        from src.memory_graph.plugin_tools.memory_plugin_tools import (
-            CreateMemoryTool,
-            LinkMemoriesTool,
-            SearchMemoriesTool,
-        )
-
-        components = []
-
-        # 添加工具组件
-        for tool_class in [CreateMemoryTool, LinkMemoriesTool, SearchMemoriesTool]:
-            tool_info = tool_class.get_tool_info()
-            components.append((tool_info, tool_class))
-
-        return components
-
-    async def on_plugin_loaded(self):
-        """插件加载后的回调"""
-        try:
-            from src.memory_graph.manager_singleton import initialize_memory_manager
-
-            logger.info(f"{self.log_prefix} 正在初始化记忆系统...")
-            await initialize_memory_manager()
-            logger.info(f"{self.log_prefix} ✅ 记忆系统初始化成功")
-
-        except Exception as e:
-            logger.error(f"{self.log_prefix} 初始化记忆系统失败: {e}", exc_info=True)
-            raise
-
-    def on_unload(self):
-        """插件卸载时的回调"""
-        try:
-            import asyncio
-
-            from src.memory_graph.manager_singleton import shutdown_memory_manager
-
-            logger.info(f"{self.log_prefix} 正在关闭记忆系统...")
-
-            # 在事件循环中运行异步关闭
-            loop = asyncio.get_event_loop()
-            if loop.is_running():
-                # 如果循环正在运行，创建任务
-                task = asyncio.create_task(shutdown_memory_manager())
-                # 存储引用以防止任务被垃圾回收
-                _background_tasks.add(task)
-                task.add_done_callback(_background_tasks.discard)
-            else:
-                # 如果循环未运行，直接运行
-                loop.run_until_complete(shutdown_memory_manager())
-
-            logger.info(f"{self.log_prefix} ✅ 记忆系统已关闭")
-
-        except Exception as e:
-            logger.error(f"{self.log_prefix} 关闭记忆系统时出错: {e}", exc_info=True)