feat: 更新数据库和后端服务

- 新增chat_sessions和chat_groups数据库表
- 更新skill_handler和model相关接口
- 修改main.go注册新路由

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/cmd/api/main.go

@@ -147,7 +147,7 @@ func main() {
 	}
 
 	// 3. 自动迁移表
-	if err := db.AutoMigrate(&model.DatabaseInfo{}, &model.SubTableInfo{}, &model.ModelInfo{}, &model.KnowledgeBase{}, &model.KnowledgeDocument{}, &model.User{}, &model.Role{}, &model.Tool{}, &model.MCP{}, &model.Skill{}, &model.Agent{}, &model.AgentSkill{}, &model.AgentKnowledgeBase{}, &model.AgentMemory{}, &model.AgentTeam{}, &model.AgentTask{}).Error; err != nil {
+	if err := db.AutoMigrate(&model.DatabaseInfo{}, &model.SubTableInfo{}, &model.ModelInfo{}, &model.KnowledgeBase{}, &model.KnowledgeDocument{}, &model.User{}, &model.Role{}, &model.Tool{}, &model.MCP{}, &model.Skill{}, &model.Agent{}, &model.AgentSkill{}, &model.AgentKnowledgeBase{}, &model.AgentMemory{}, &model.AgentTeam{}, &model.AgentTask{}, &model.ChatSession{}, &model.ChatMessage{}, &model.ChatGroup{}).Error; err != nil {
 		log.Printf("Warning: AutoMigrate error: %v", err)
 	}
 
@@ -255,6 +255,57 @@ func main() {
 	`)
 	log.Println("Skills table verified/created")
 
+	// 3.5 确保 chat_sessions 表存在
+	db.Exec(`
+		CREATE TABLE IF NOT EXISTS chat_sessions (
+			id VARCHAR(36) PRIMARY KEY,
+			user_id VARCHAR(36) NOT NULL,
+			agent_id VARCHAR(36),
+			title VARCHAR(255),
+			model_id VARCHAR(36),
+			status VARCHAR(20) DEFAULT 'active',
+			created_at DATETIME(3),
+			updated_at DATETIME(3),
+			INDEX idx_chat_sessions_user (user_id),
+			INDEX idx_chat_sessions_agent (agent_id),
+			INDEX idx_chat_sessions_updated (updated_at DESC)
+		)
+	`)
+	log.Println("Chat sessions table verified/created")
+
+	// 3.6 确保 chat_messages 表存在
+	db.Exec(`
+		CREATE TABLE IF NOT EXISTS chat_messages (
+			id VARCHAR(36) PRIMARY KEY,
+			session_id VARCHAR(36) NOT NULL,
+			role VARCHAR(20),
+			content TEXT,
+			tokens_used INT DEFAULT 0,
+			duration_ms INT DEFAULT 0,
+			metadata TEXT,
+			created_at DATETIME(3),
+			INDEX idx_chat_messages_session (session_id),
+			INDEX idx_chat_messages_created (created_at ASC)
+		)
+	`)
+	log.Println("Chat messages table verified/created")
+
+	// 3.7 确保 chat_groups 表存在
+	db.Exec(`
+		CREATE TABLE IF NOT EXISTS chat_groups (
+			id VARCHAR(36) PRIMARY KEY,
+			user_id VARCHAR(36) NOT NULL,
+			name VARCHAR(100) NOT NULL,
+			description TEXT,
+			agent_ids TEXT,
+			status VARCHAR(20) DEFAULT 'active',
+			created_at DATETIME(3),
+			updated_at DATETIME(3),
+			INDEX idx_chat_groups_user (user_id)
+		)
+	`)
+	log.Println("Chat groups table verified/created")
+
 	// 使用GORM Migrator添加缺失的列
 	migrator := db.Migrator()
 
@@ -300,6 +351,7 @@ func main() {
 	mcpRepo := repository.NewMCPRepository(db)
 	skillRepo := repository.NewSkillRepository(db)
 	agentRepo := repository.NewAgentRepository(db)
+	chatRepo := repository.NewChatRepository(db)
 
 	// 4.1 初始化默认管理员用户
 	initDefaultAdmin(userRepo)
@@ -348,6 +400,13 @@ func main() {
 	skillHandler := handler.NewSkillHandler(skillService)
 	agentHandler := handler.NewAgentHandler(agentService)
 	memoryHandler := handler.NewMemoryHandler(memoryService)
+	sessionHandler := handler.NewSessionHandler(chatRepo)
+
+	// 初始化群聊服务
+	chatGroupRepo := repository.NewChatGroupRepository(db)
+	chatGroupService := service.NewChatGroupService(chatGroupRepo, agentRepo)
+	chatGroupHandler := handler.NewChatGroupHandler(chatGroupService)
+
 	var uploadHandler *handler.UploadHandler
 	if uploadService != nil {
 		uploadHandler = handler.NewUploadHandler(uploadService, knowledgeRepo)
@@ -511,8 +570,8 @@ func main() {
 	{
 		skillGroup.GET("/list", skillHandler.List)
 		skillGroup.GET("/sync", skillHandler.Sync)
-		skillGroup.GET("/:id", skillHandler.GetByID)
 		skillGroup.GET("/content", skillHandler.GetSkillContent)
+		skillGroup.GET("/:id", skillHandler.GetByID)
 		skillGroup.POST("/add", skillHandler.Create)
 		skillGroup.PUT("/:id", skillHandler.Update)
 		skillGroup.DELETE("/:id", skillHandler.Delete)
@@ -531,12 +590,47 @@ func main() {
 		agentGroup.POST("/team/chat", agentHandler.TeamChat)
 	}
 
+	// 会话管理模块
+	chatGroup := r.Group("/api/chat")
+	{
+		chatGroup.POST("/sessions", sessionHandler.CreateSession)
+		chatGroup.GET("/sessions", sessionHandler.ListSessions)
+		chatGroup.GET("/sessions/:id", sessionHandler.GetSession)
+		chatGroup.PUT("/sessions/:id", sessionHandler.UpdateSession)
+		chatGroup.DELETE("/sessions/:id", sessionHandler.DeleteSession)
+		chatGroup.GET("/sessions/:id/messages", sessionHandler.GetMessages)
+		chatGroup.POST("/messages", sessionHandler.CreateMessage)
+	}
+
+	// 群聊管理模块
+	groupChat := r.Group("/api/chat/groups")
+	{
+		groupChat.POST("", chatGroupHandler.CreateGroup)
+		groupChat.GET("", chatGroupHandler.ListGroups)
+		groupChat.GET("/:id", chatGroupHandler.GetGroup)
+		groupChat.PUT("/:id", chatGroupHandler.UpdateGroup)
+		groupChat.DELETE("/:id", chatGroupHandler.DeleteGroup)
+		groupChat.POST("/:id/chat", chatGroupHandler.GroupChat)
+	}
+
 	// 记忆管理模块
 	memoryGroup := r.Group("/api/agent/:id/memories")
 	{
 		memoryGroup.GET("", memoryHandler.GetMemories)
 		memoryGroup.POST("", memoryHandler.CreateMemory)
-		memoryGroup.DELETE("/:memory_id", memoryHandler.DeleteMemory)
+		memoryGroup.GET("/search", memoryHandler.SearchMemories)
+		memoryGroup.GET("/categories", memoryHandler.GetMemoryCategories)
+		memoryGroup.GET("/tags", memoryHandler.GetMemoryTags)
+		memoryGroup.GET("/export", memoryHandler.ExportMemories)
+		memoryGroup.POST("/import", memoryHandler.ImportMemories)
+	}
+
+	// 单个记忆操作
+	memoryItemGroup := r.Group("/api/agent/memories/:memory_id")
+	{
+		memoryItemGroup.GET("", memoryHandler.GetMemory)
+		memoryItemGroup.PUT("", memoryHandler.UpdateMemory)
+		memoryItemGroup.DELETE("", memoryHandler.DeleteMemory)
 	}
 
 	// Swagger 文档