feat(workflow): add edge-tool routing and realtime runtime

frontend/src/components/workflow/specs.ts

@@ -24,6 +24,8 @@ export type MessageCompletionPolicy =
 export type ActionResultAssignmentMode = "inherit" | "override" | "none";
 export type ActionUserInputPolicy = "queue" | "block";
 export type EdgeMode = "llm" | "expression" | "always";
+export type WorkflowRuntimeMode = "pipeline" | "realtime";
+export type WorkflowLlmRoutingMode = "llm_router" | "edge_tool";
 export type ExpressionOperator =
   | "eq"
   | "neq"
@@ -202,7 +204,10 @@ export type NodeSpecMap = Record<string, RuntimeNodeSpec>;
 export type WorkflowGraph = {
   specVersion: 3;
   settings: {
+    runtimeMode: WorkflowRuntimeMode;
+    llmRoutingMode: WorkflowLlmRoutingMode;
     globalPrompt: string;
+    defaultRealtimeResourceId: string;
     defaultLlmResourceId: string;
     defaultAsrResourceId: string;
     defaultTtsResourceId: string;
@@ -235,8 +240,11 @@ export function defaultGraph(): WorkflowGraph {
   return {
     specVersion: 3,
     settings: {
+      runtimeMode: "pipeline",
+      llmRoutingMode: "edge_tool",
       globalPrompt:
         "你是一个友好、专业的语音助手。请使用简短、自然、适合口语表达的句子。",
+      defaultRealtimeResourceId: "",
       defaultLlmResourceId: "",
       defaultAsrResourceId: "",
       defaultTtsResourceId: "",