feat: implement full recursive multi-agent system in ClawGo

pkg/agent/loop.go

@@ -86,7 +86,7 @@ func NewAgentLoop(cfg *config.Config, msgBus *bus.MessageBus, provider providers
 
 	sessionsManager := session.NewSessionManager(filepath.Join(filepath.Dir(cfg.WorkspacePath()), "sessions"))
 
-	return &AgentLoop{
+	loop := &AgentLoop{
 		bus:            msgBus,
 		provider:       provider,
 		workspace:      workspace,
@@ -97,6 +97,14 @@ func NewAgentLoop(cfg *config.Config, msgBus *bus.MessageBus, provider providers
 		tools:          toolsRegistry,
 		running:        false,
 	}
+
+	// 注入递归运行逻辑，使 subagent 具备 full tool-calling 能力
+	subagentManager.SetRunFunc(func(ctx context.Context, task, channel, chatID string) (string, error) {
+		sessionKey := fmt.Sprintf("subagent:%d", time.Now().UnixNano())
+		return loop.ProcessDirect(ctx, task, sessionKey)
+	})
+
+	return loop
 }
 
 func (al *AgentLoop) Run(ctx context.Context) error {

pkg/tools/subagent.go

@@ -28,6 +28,7 @@ type SubagentManager struct {
 	bus       *bus.MessageBus
 	workspace string
 	nextID    int
+	runFunc   SubagentRunFunc
 }
 
 func NewSubagentManager(provider providers.LLMProvider, workspace string, bus *bus.MessageBus) *SubagentManager {
@@ -70,45 +71,74 @@ func (sm *SubagentManager) runTask(ctx context.Context, task *SubagentTask) {
 	task.Status = "running"
 	task.Created = time.Now().UnixMilli()
 
-	messages := []providers.Message{
-		{
-			Role:    "system",
-			Content: "You are a subagent. Complete the given task independently and report the result.",
-		},
-		{
-			Role:    "user",
-			Content: task.Task,
-		},
-	}
-
-	response, err := sm.provider.Chat(ctx, messages, nil, sm.provider.GetDefaultModel(), map[string]interface{}{
-		"max_tokens": 4096,
-	})
-
-	sm.mu.Lock()
-	defer sm.mu.Unlock()
-
-	if err != nil {
-		task.Status = "failed"
-		task.Result = fmt.Sprintf("Error: %v", err)
+	// 1. 独立 Agent 逻辑：支持递归工具调用
+	// 这里简单实现：通过共享 AgentLoop 的逻辑来实现 full subagent 能力
+	// 但目前 subagent.go 不方便反向依赖 agent 包，我们暂时通过 Inject 方式解决
+	
+	// 如果没有注入 RunFunc，则退化为简单的一步 Chat
+	if sm.runFunc != nil {
+		result, err := sm.runFunc(ctx, task.Task, task.OriginChannel, task.OriginChatID)
+		sm.mu.Lock()
+		if err != nil {
+			task.Status = "failed"
+			task.Result = fmt.Sprintf("Error: %v", err)
+		} else {
+			task.Status = "completed"
+			task.Result = result
+		}
+		sm.mu.Unlock()
 	} else {
-		task.Status = "completed"
-		task.Result = response.Content
+		// 原有的 One-shot 逻辑
+		messages := []providers.Message{
+			{
+				Role:    "system",
+				Content: "You are a subagent. Complete the given task independently and report the result.",
+			},
+			{
+				Role:    "user",
+				Content: task.Task,
+			},
+		}
+
+		response, err := sm.provider.Chat(ctx, messages, nil, sm.provider.GetDefaultModel(), map[string]interface{}{
+			"max_tokens": 4096,
+		})
+
+		sm.mu.Lock()
+		if err != nil {
+			task.Status = "failed"
+			task.Result = fmt.Sprintf("Error: %v", err)
+		} else {
+			task.Status = "completed"
+			task.Result = response.Content
+		}
+		sm.mu.Unlock()
 	}
 
-	// Send announce message back to main agent
+	// 2. 结果广播 (原有逻辑保持)
 	if sm.bus != nil {
-		announceContent := fmt.Sprintf("Task '%s' completed.\n\nResult:\n%s", task.Label, task.Result)
+		prefix := "Task completed"
+		if task.Label != "" {
+			prefix = fmt.Sprintf("Task '%s' completed", task.Label)
+		}
+		announceContent := fmt.Sprintf("%s.\n\nResult:\n%s", prefix, task.Result)
 		sm.bus.PublishInbound(bus.InboundMessage{
 			Channel:  "system",
 			SenderID: fmt.Sprintf("subagent:%s", task.ID),
-			// Format: "original_channel:original_chat_id" for routing back
-			ChatID:  fmt.Sprintf("%s:%s", task.OriginChannel, task.OriginChatID),
-			Content: announceContent,
+			ChatID:   fmt.Sprintf("%s:%s", task.OriginChannel, task.OriginChatID),
+			Content:  announceContent,
 		})
 	}
 }
 
+type SubagentRunFunc func(ctx context.Context, task, channel, chatID string) (string, error)
+
+func (sm *SubagentManager) SetRunFunc(f SubagentRunFunc) {
+	sm.mu.Lock()
+	defer sm.mu.Unlock()
+	sm.runFunc = f
+}
+
 func (sm *SubagentManager) GetTask(taskID string) (*SubagentTask, bool) {
 	sm.mu.RLock()
 	defer sm.mu.RUnlock()