feat: make workflow messages resumable

frontend/src/components/workflow/GenericNode.tsx

@@ -38,7 +38,6 @@ export function GenericNode({ id, type, data, selected }: NodeProps) {
   const entryModeLabel = {
     wait_user: "等待用户",
     generate: "立即回复",
-    fixed_speech: "固定进入语",
   }[nodeData.entryMode ?? "wait_user"];
   const inheritsGlobal = nodeData.inheritGlobalConfig !== false;
   const meta = type === "agent"

frontend/src/components/workflow/WorkflowCanvas.tsx

@@ -69,7 +69,6 @@ function defaultNodeData(spec: RuntimeNodeSpec): WorkflowNodeData {
       contextPolicy: "inherit",
       inheritGlobalConfig: true,
       entryMode: "wait_user",
-      entrySpeech: "",
     });
   } else if (spec.type === "action") {
     Object.assign(data, {

frontend/src/components/workflow/panels/AgentNodePanel.tsx

@@ -170,28 +170,13 @@ export function AgentNodePanel({
           options={[
             { value: "wait_user", label: "等待用户说话（默认）" },
             { value: "generate", label: "立即让 LLM 回复" },
-            { value: "fixed_speech", label: "播放固定进入语" },
           ]}
           onChange={(value) => set("entryMode", value || "wait_user")}
           allowNone={false}
         />
-        {draft.entryMode === "fixed_speech" && (
-          <label className="block">
-            <div className="mb-1.5 text-sm font-medium text-foreground">
-              固定进入语 <span className="text-destructive">*</span>
-            </div>
-            <Textarea
-              rows={3}
-              value={draft.entrySpeech ?? ""}
-              onChange={(event) => set("entrySpeech", event.target.value)}
-              placeholder="例如：您好，请告诉我需要处理的问题。"
-              className="field-sizing-fixed min-h-24 resize-y border-hairline-strong bg-background text-sm text-foreground placeholder:text-muted-soft"
-            />
-            <span className="mt-1.5 block text-xs text-muted-foreground">
-              支持使用 {"{{variable}}"} 动态变量；只播放语音，不调用 LLM。
-            </span>
-          </label>
-        )}
+        <p className="text-xs leading-5 text-muted-foreground">
+          固定播报、客户端弹窗和确认门禁请使用独立的 Message 节点。
+        </p>
       </SectionCard>
 
       {!inheritsGlobal && (

frontend/src/components/workflow/panels/NodeSettingsPanel.tsx

@@ -171,28 +171,13 @@ export function NodeSettingsPanel({
               options={[
                 { value: "wait_user", label: "等待用户说话（默认）" },
                 { value: "generate", label: "立即让 LLM 回复" },
-                { value: "fixed_speech", label: "播放固定进入语" },
               ]}
               onChange={(value) => set("entryMode", value || "wait_user")}
               allowNone={false}
             />
-            {draft.entryMode === "fixed_speech" && (
-              <div className="block">
-                <div className="mb-2 text-sm font-medium text-foreground">
-                  固定进入语 <span className="text-destructive">*</span>
-                </div>
-                <Textarea
-                  rows={3}
-                  value={draft.entrySpeech ?? ""}
-                  onChange={(event) => set("entrySpeech", event.target.value)}
-                  placeholder="例如：您好，请告诉我需要处理的问题。"
-                  className="field-sizing-fixed min-h-24 resize-y border-hairline-strong bg-background text-foreground placeholder:text-muted-soft"
-                />
-                <span className="mt-2 block text-xs text-muted-soft">
-                  支持使用 {"{{variable}}"} 动态变量；只播放语音，不调用 LLM。
-                </span>
-              </div>
-            )}
+            <p className="text-xs leading-5 text-muted-soft">
+              固定播报、客户端弹窗和确认门禁请使用独立的 Message 节点。
+            </p>
             <div className="flex flex-col gap-2">
               <label className="text-sm font-medium text-foreground">可用工具</label>
               <ToolOptionPicker

frontend/src/components/workflow/specs.ts

@@ -15,7 +15,7 @@ export type WorkflowNodeType =
   | "end";
 export type ContextPolicy = "inherit" | "fresh";
 export type KnowledgeMode = "automatic" | "on_demand" | "disabled";
-export type AgentEntryMode = "wait_user" | "generate" | "fixed_speech";
+export type AgentEntryMode = "wait_user" | "generate";
 export type ActionResultAssignmentMode = "inherit" | "override" | "none";
 export type ActionUserInputPolicy = "queue" | "block";
 export type EdgeMode = "llm" | "expression" | "always";
@@ -36,7 +36,6 @@ export type WorkflowNodeData = {
   contextPolicy?: ContextPolicy;
   inheritGlobalConfig?: boolean;
   entryMode?: AgentEntryMode;
-  entrySpeech?: string;
   toolIds?: string[];
   knowledgeBaseId?: string;
   knowledgeMode?: KnowledgeMode;
@@ -260,7 +259,6 @@ export function defaultGraph(): WorkflowGraph {
           contextPolicy: "inherit",
           inheritGlobalConfig: true,
           entryMode: "wait_user",
-          entrySpeech: "",
         },
       },
       {