fix: checkpoint store correctly initialize in multi-layered sub-workf… (#755)

backend/domain/workflow/internal/compose/node_builder.go

@@ -42,6 +42,7 @@ func New(ctx context.Context, s *schema.NodeSchema,
 	inner compose.Runnable[map[string]any, map[string]any], // inner workflow for composite node
 	sc *schema.WorkflowSchema, // the workflow this NodeSchema is in
 	deps *dependencyInfo, // the dependency for this node pre-calculated by workflow engine
+	requireCheckpoint bool,
 ) (_ *Node, err error) {
 	defer func() {
 		if panicErr := recover(); panicErr != nil {
@@ -87,7 +88,7 @@ func New(ctx context.Context, s *schema.NodeSchema,
 
 		return &Node{Lambda: s.Lambda}, nil
 	case entity.NodeTypeSubWorkflow:
-		subWorkflow, err := buildSubWorkflow(ctx, s, sc.RequireCheckpoint())
+		subWorkflow, err := buildSubWorkflow(ctx, s, requireCheckpoint)
 		if err != nil {
 			return nil, err
 		}

backend/domain/workflow/internal/compose/workflow.go

@@ -238,7 +238,7 @@ func (w *Workflow) addNodeInternal(ctx context.Context, ns *schema.NodeSchema, i
 		innerWorkflow = inner.inner
 	}
 
-	ins, err := New(ctx, ns, innerWorkflow, w.schema, deps)
+	ins, err := New(ctx, ns, innerWorkflow, w.schema, deps, w.requireCheckpoint)
 	if err != nil {
 		return nil, err
 	}

backend/domain/workflow/internal/nodes/llm/llm.go

@@ -731,10 +731,7 @@ func (c *Config) Build(ctx context.Context, ns *schema2.NodeSchema, _ ...schema2
 	_ = g.AddEdge(llmNodeKey, outputConvertNodeKey)
 	_ = g.AddEdge(outputConvertNodeKey, compose.END)
 
-	requireCheckpoint := false
-	if len(tools) > 0 {
-		requireCheckpoint = true
-	}
+	requireCheckpoint := c.RequireCheckpoint()
 
 	var compileOpts []compose.GraphCompileOption
 	if requireCheckpoint {
@@ -759,8 +756,16 @@ func (c *Config) Build(ctx context.Context, ns *schema2.NodeSchema, _ ...schema2
 
 func (c *Config) RequireCheckpoint() bool {
 	if c.FCParam != nil {
-		if c.FCParam.WorkflowFCParam != nil || c.FCParam.PluginFCParam != nil {
-			return true
+		if c.FCParam.WorkflowFCParam != nil {
+			if len(c.FCParam.WorkflowFCParam.WorkflowList) > 0 {
+				return true
+			}
+		}
+
+		if c.FCParam.PluginFCParam != nil {
+			if len(c.FCParam.PluginFCParam.PluginList) > 0 {
+				return true
+			}
 		}
 	}
 

backend/domain/workflow/internal/repo/repository.go

@@ -1314,7 +1314,8 @@ func (r *RepositoryImpl) WorkflowAsTool(ctx context.Context, policy vo.GetPolicy
 	}
 
 	var opts []compose.WorkflowOption
-	opts = append(opts, compose.WithIDAsName(policy.ID))
+	opts = append(opts, compose.WithIDAsName(policy.ID),
+		compose.WithParentRequireCheckpoint()) // always assumes the 'parent' may pass a checkpoint ID
 	if s := execute.GetStaticConfig(); s != nil && s.MaxNodeCountPerWorkflow > 0 {
 		opts = append(opts, compose.WithMaxNodeCount(s.MaxNodeCountPerWorkflow))
 	}