feat: port NOFXi agent module onto latest dev base (#1485)

* feat: integrate NOFXi agent into dev

* Enhance NOFXi agent workflow and diagnostics

agent/workflow_test.go

@@ -0,0 +1,37 @@
+package agent
+
+import "testing"
+
+func TestSplitWorkflowSegments(t *testing.T) {
+	got := splitWorkflowSegments("把策略删了，再把交易所改名")
+	if len(got) != 2 {
+		t.Fatalf("expected 2 segments, got %d: %#v", len(got), got)
+	}
+}
+
+func TestClassifyWorkflowTask(t *testing.T) {
+	task, ok := classifyWorkflowTask("把策略删了")
+	if !ok {
+		t.Fatal("expected task")
+	}
+	if task.Skill != "strategy_management" || task.Action != "delete" {
+		t.Fatalf("unexpected task: %+v", task)
+	}
+}
+
+func TestFallbackWorkflowDecompositionBuildsTwoTasks(t *testing.T) {
+	a := &Agent{}
+	out := a.decomposeWorkflowIntentFallback("把策略删了，再把交易所改名")
+	if len(out.Tasks) != 2 {
+		t.Fatalf("expected 2 tasks, got %d", len(out.Tasks))
+	}
+	if out.Tasks[0].Skill != "strategy_management" {
+		t.Fatalf("unexpected first task: %+v", out.Tasks[0])
+	}
+	if out.Tasks[1].Skill != "exchange_management" {
+		t.Fatalf("unexpected second task: %+v", out.Tasks[1])
+	}
+	if len(out.Tasks[1].DependsOn) != 1 || out.Tasks[1].DependsOn[0] != out.Tasks[0].ID {
+		t.Fatalf("expected dependency on first task, got %+v", out.Tasks[1].DependsOn)
+	}
+}