refactor(chat): wire sendMessageHttpActor for HTTP message sending and update response handling

src/stores/chat/chat-machine.actors.ts

@@ -3,7 +3,7 @@
  *
  * 从 `chat-machine.ts` 抽出的"Actors"段：
  *   - `chatInitActor`（fromPromise，**仅**游客有意义）
- *   - `sendMessageHttpActor`（fromPromise，**已定义但**未 wire —— 消息**不**真发后端）
+ *   - `sendMessageHttpActor`（fromPromise，**已** wire —— "一次发送 = 一次返回"）
  *   - `loadMoreHistoryActor`（fromPromise）
  *   - `chatWebSocketActor`（fromCallback，长生命周期 —— **仅** userSession 期间 invoke）
  *
@@ -24,6 +24,7 @@ import {
   chatRepo,
   localMessagesToUi,
   readInitData,
+  sendResponseToUiMessage,
   type InitResult,
 } from "./chat-machine.helpers";
 import type { ChatEvent } from "./chat-events";
@@ -34,12 +35,13 @@ import type { ChatEvent } from "./chat-events";
 export const chatInitActor = fromPromise<InitResult>(async () => readInitData());
 
 /**
- * HTTP 发送消息（**已定义但未** wire —— 消息**不**真发后端）
- * - 任何 state 转移**未** invoke 此 actor
- * - 保留全链日志以便排查
+ * HTTP 发送消息（**一次发送 = 一次返回**）
+ * - 后端响应**就**是 AI 回复（`ChatSendResponse.reply: string`）
+ * - **不**再调 `getLocalMessages()`（**多此一举**）
+ * - 返回 `{ reply: UiMessage }` —— `sending.onDone` 把它**追加**到 `context.messages`
  */
 export const sendMessageHttpActor = fromPromise<
-  { messages: UiMessage[] },
+  { reply: UiMessage },
   { content: string }
 >(async ({ input, self }) => {
   console.log("[chat-machine] sendMessageHttpActor ENTRY", {
@@ -48,10 +50,6 @@ export const sendMessageHttpActor = fromPromise<
     selfId: self.id,
     selfPath: "<actor path>",
   });
-  console.warn(
-    "[chat-machine] sendMessageHttpActor invoked —— actor 已定义但**未** invoke（消息**不**真发后端）",
-    { contentLength: input.content.length, contentPreview: input.content.slice(0, 50) },
-  );
   console.log("[chat-machine] sendMessageHttpActor calling chatRepo.sendMessage");
   const result = await chatRepo.sendMessage(input.content);
   console.log("[chat-machine] sendMessageHttpActor chatRepo.sendMessage DONE", {
@@ -63,18 +61,18 @@ export const sendMessageHttpActor = fromPromise<
     throw result.error;
   }
 
-  console.log("[chat-machine] sendMessageHttpActor fetching local messages");
-  const local = await chatRepo.getLocalMessages();
-  console.log("[chat-machine] sendMessageHttpActor local messages DONE", {
-    success: local.success,
-    messagesCount: local.success && local.data ? local.data.length : 0,
+  // 一次发送 = 一次返回 —— 直接转 reply → UiMessage
+  console.log("[chat-machine] sendMessageHttpActor converting reply to UiMessage", {
+    replyLength: result.data.reply.length,
+    replyPreview: result.data.reply.slice(0, 50),
+    messageId: result.data.messageId,
+    timestamp: result.data.timestamp,
   });
-  if (Result.isOk(local) && local.data) {
-    const messages = localMessagesToUi(local.data);
-    console.log("[chat-machine] sendMessageHttpActor done", { messagesCount: messages.length });
-    return { messages };
-  }
-  return { messages: [] };
+  const reply = sendResponseToUiMessage(result.data);
+  console.log("[chat-machine] sendMessageHttpActor done", {
+    replyContentLength: reply.content.length,
+  });
+  return { reply };
 });
 
 /** 翻历史（pagination） */