fix(memory-graph): 修复集成测试问题

- 修复Config类memory字段验证问题 (改为Optional)
- 为Memory模型添加activation属性
- 修复CreateMemoryTool返回值 (添加memory_id)
- 为GraphStore添加remove_memory方法
- 修复integration测试脚本
- 所有集成测试通过 (5/5)

Changes:
- src/config/config.py: memory字段改为Optional
- src/memory_graph/models.py: 添加activation属性
- src/memory_graph/plugin_tools/memory_plugin_tools.py: 返回memory_id
- src/memory_graph/storage/graph_store.py: 添加remove_memory方法
- tests/test_memory_graph_integration.py: 修复工具返回值检查

Tests:
 基本记忆操作 (CRUD + 检索)
 LLM工具集成 (创建记忆)
 记忆生命周期 (激活/整合/遗忘)
 维护任务 (调度+手动执行)
 配置系统 (默认/自定义/bot_config)

src/config/config.py

@@ -2,6 +2,7 @@ import os
 import shutil
 import sys
 from datetime import datetime
+from typing import Optional
 
 import tomlkit
 from pydantic import Field
@@ -395,7 +396,7 @@ class Config(ValidatedConfigBase):
     notice: NoticeConfig = Field(..., description="Notice消息配置")
     emoji: EmojiConfig = Field(..., description="表情配置")
     expression: ExpressionConfig = Field(..., description="表达配置")
-    memory: MemoryConfig = Field(..., description="记忆配置")
+    memory: Optional[MemoryConfig] = Field(default=None, description="记忆配置（旧版，已废弃）")
     mood: MoodConfig = Field(..., description="情绪配置")
     reaction: ReactionConfig = Field(default_factory=ReactionConfig, description="反应规则配置")
     chinese_typo: ChineseTypoConfig = Field(..., description="中文错别字配置")

src/memory_graph/models.py

@@ -164,6 +164,7 @@ class Memory:
     nodes: List[MemoryNode]  # 该记忆包含的所有节点
     edges: List[MemoryEdge]  # 该记忆包含的所有边
     importance: float = 0.5  # 整体重要性 [0-1]
+    activation: float = 0.0  # 激活度 [0-1]，用于记忆整合和遗忘
     status: MemoryStatus = MemoryStatus.STAGED  # 记忆状态
     created_at: datetime = field(default_factory=datetime.now)
     last_accessed: datetime = field(default_factory=datetime.now)  # 最后访问时间
@@ -175,8 +176,9 @@ class Memory:
         """后初始化处理"""
         if not self.id:
             self.id = str(uuid.uuid4())
-        # 确保重要性在有效范围内
+        # 确保重要性和激活度在有效范围内
         self.importance = max(0.0, min(1.0, self.importance))
+        self.activation = max(0.0, min(1.0, self.activation))
 
     def to_dict(self) -> Dict[str, Any]:
         """转换为字典（用于序列化）"""
@@ -187,6 +189,7 @@ class Memory:
             "nodes": [node.to_dict() for node in self.nodes],
             "edges": [edge.to_dict() for edge in self.edges],
             "importance": self.importance,
+            "activation": self.activation,
             "status": self.status.value,
             "created_at": self.created_at.isoformat(),
             "last_accessed": self.last_accessed.isoformat(),
@@ -205,6 +208,7 @@ class Memory:
             nodes=[MemoryNode.from_dict(n) for n in data["nodes"]],
             edges=[MemoryEdge.from_dict(e) for e in data["edges"]],
             importance=data.get("importance", 0.5),
+            activation=data.get("activation", 0.0),
             status=MemoryStatus(data.get("status", "staged")),
             created_at=datetime.fromisoformat(data["created_at"]),
             last_accessed=datetime.fromisoformat(data.get("last_accessed", data["created_at"])),

src/memory_graph/plugin_tools/memory_plugin_tools.py

@@ -78,12 +78,14 @@ class CreateMemoryTool(BaseTool):
                 logger.info(f"[CreateMemoryTool] 成功创建记忆: {memory.id}")
                 return {
                     "name": self.name,
-                    "content": f"成功创建记忆（ID: {memory.id}）"
+                    "content": f"成功创建记忆（ID: {memory.id}）",
+                    "memory_id": memory.id,  # 返回记忆ID供后续使用
                 }
             else:
                 return {
                     "name": self.name,
-                    "content": "创建记忆失败"
+                    "content": "创建记忆失败",
+                    "memory_id": None,
                 }
                 
         except Exception as e:

src/memory_graph/storage/graph_store.py

@@ -390,6 +390,44 @@ class GraphStore:
         logger.info(f"从字典加载图: {store.get_statistics()}")
         return store
 
+    def remove_memory(self, memory_id: str) -> bool:
+        """
+        从图中删除指定记忆
+        
+        Args:
+            memory_id: 要删除的记忆ID
+            
+        Returns:
+            是否删除成功
+        """
+        try:
+            # 1. 检查记忆是否存在
+            if memory_id not in self.memory_index:
+                logger.warning(f"记忆不存在，无法删除: {memory_id}")
+                return False
+            
+            memory = self.memory_index[memory_id]
+            
+            # 2. 从节点映射中移除此记忆
+            for node in memory.nodes:
+                if node.id in self.node_to_memories:
+                    self.node_to_memories[node.id].discard(memory_id)
+                    # 如果该节点不再属于任何记忆，从图中移除节点
+                    if not self.node_to_memories[node.id]:
+                        if self.graph.has_node(node.id):
+                            self.graph.remove_node(node.id)
+                        del self.node_to_memories[node.id]
+            
+            # 3. 从记忆索引中移除
+            del self.memory_index[memory_id]
+            
+            logger.info(f"成功删除记忆: {memory_id}")
+            return True
+            
+        except Exception as e:
+            logger.error(f"删除记忆失败 {memory_id}: {e}", exc_info=True)
+            return False
+
     def clear(self) -> None:
         """清空图（危险操作，仅用于测试）"""
         self.graph.clear()