add node dispatch latency audit and status metrics for child-task workflow

README.md

@@ -52,6 +52,7 @@
 - 设备 `payload` 规范字段：`media_type` `storage` `url|path|image` `meta`
 - 支持 `agent_task`：主节点可向具备 `model` 能力的子节点下发任务，子节点返回执行结果
 - 节点分发审计写入：`memory/nodes-dispatch-audit.jsonl`
+- `/status` 展示节点分发统计（total/ok/fail/avg_ms/top_action）
 
 实现位置：
 - `pkg/nodes/types.go`

README_EN.md

@@ -52,6 +52,7 @@ A `nodes` tool control-plane PoC is now available:
 - device `payload` normalized fields: `media_type` `storage` `url|path|image` `meta`
 - supports `agent_task`: parent node can dispatch tasks to child nodes with `model` capability and receive execution results
 - node dispatch audit is persisted to `memory/nodes-dispatch-audit.jsonl`
+- `/status` shows node dispatch stats (total/ok/fail/avg_ms/top_action)
 
 Implementation:
 - `pkg/nodes/types.go`

cmd/clawgo/cmd_status.go

@@ -176,6 +176,12 @@ func statusCmd() {
 			}
 			fmt.Printf("Nodes: total=%d online=%d\n", len(ns), online)
 			fmt.Printf("Nodes Capabilities: run=%d model=%d camera=%d screen=%d location=%d canvas=%d\n", caps["run"], caps["model"], caps["camera"], caps["screen"], caps["location"], caps["canvas"])
+			if total, okCnt, avgMs, actionTop, err := collectNodeDispatchStats(filepath.Join(workspace, "memory", "nodes-dispatch-audit.jsonl")); err == nil && total > 0 {
+				fmt.Printf("Nodes Dispatch: total=%d ok=%d fail=%d avg_ms=%d\n", total, okCnt, total-okCnt, avgMs)
+				if actionTop != "" {
+					fmt.Printf("Nodes Dispatch Top Action: %s\n", actionTop)
+				}
+			}
 		}
 	}
 }
@@ -429,6 +435,58 @@ func collectAutonomyTaskSummary(path string) (map[string]int, map[string]int, ma
 	return summary, priorities, reasons, nextRetry, totalDedupe, waitingLocks, len(lockKeySet), nil
 }
 
+func collectNodeDispatchStats(path string) (int, int, int, string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return 0, 0, 0, "", err
+	}
+	lines := strings.Split(strings.TrimSpace(string(data)), "\n")
+	total, okCnt, msSum := 0, 0, 0
+	actionCnt := map[string]int{}
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		var row struct {
+			Action     string `json:"action"`
+			OK         bool   `json:"ok"`
+			DurationMS int    `json:"duration_ms"`
+		}
+		if err := json.Unmarshal([]byte(line), &row); err != nil {
+			continue
+		}
+		total++
+		if row.OK {
+			okCnt++
+		}
+		if row.DurationMS > 0 {
+			msSum += row.DurationMS
+		}
+		a := strings.TrimSpace(strings.ToLower(row.Action))
+		if a == "" {
+			a = "unknown"
+		}
+		actionCnt[a]++
+	}
+	avg := 0
+	if total > 0 {
+		avg = msSum / total
+	}
+	topAction := ""
+	topN := 0
+	for k, v := range actionCnt {
+		if v > topN {
+			topN = v
+			topAction = k
+		}
+	}
+	if topAction != "" {
+		topAction = fmt.Sprintf("%s(%d)", topAction, topN)
+	}
+	return total, okCnt, avg, topAction, nil
+}
+
 func collectSkillExecStats(path string) (int, int, int, float64, string, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {

pkg/tools/nodes_tool.go

@@ -114,32 +114,35 @@ func (t *NodesTool) Execute(ctx context.Context, args map[string]interface{}) (s
 			}
 		}
 		req := nodes.Request{Action: action, Node: nodeID, Task: strings.TrimSpace(task), Model: strings.TrimSpace(model), Args: reqArgs}
+		started := time.Now()
 		resp, err := t.router.Dispatch(ctx, req, mode)
+		durationMs := int(time.Since(started).Milliseconds())
 		if err != nil {
-			t.writeAudit(req, nodes.Response{OK: false, Code: "transport_error", Error: err.Error(), Node: nodeID, Action: action}, mode)
+			t.writeAudit(req, nodes.Response{OK: false, Code: "transport_error", Error: err.Error(), Node: nodeID, Action: action}, mode, durationMs)
 			return "", err
 		}
-		t.writeAudit(req, resp, mode)
+		t.writeAudit(req, resp, mode, durationMs)
 		b, _ := json.Marshal(resp)
 		return string(b), nil
 	}
 }
 
-func (t *NodesTool) writeAudit(req nodes.Request, resp nodes.Response, mode string) {
+func (t *NodesTool) writeAudit(req nodes.Request, resp nodes.Response, mode string, durationMs int) {
 	if strings.TrimSpace(t.auditPath) == "" {
 		return
 	}
 	_ = os.MkdirAll(filepath.Dir(t.auditPath), 0755)
 	row := map[string]interface{}{
-		"time":   time.Now().UTC().Format(time.RFC3339),
-		"mode":   strings.TrimSpace(mode),
-		"action": req.Action,
-		"node":   req.Node,
-		"task":   req.Task,
-		"model":  req.Model,
-		"ok":     resp.OK,
-		"code":   resp.Code,
-		"error":  resp.Error,
+		"time":        time.Now().UTC().Format(time.RFC3339),
+		"mode":        strings.TrimSpace(mode),
+		"action":      req.Action,
+		"node":        req.Node,
+		"task":        req.Task,
+		"model":       req.Model,
+		"ok":          resp.OK,
+		"code":        resp.Code,
+		"error":       resp.Error,
+		"duration_ms": durationMs,
 	}
 	b, _ := json.Marshal(row)
 	f, err := os.OpenFile(t.auditPath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)