refactor(logging): centralize console output

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

@@ -25,7 +25,9 @@ import { chatRepository } from "@/data/repositories/chat_repository";
 import type { IChatRepository } from "@/data/repositories/interfaces";
 import { ChatStorage } from "@/data/storage/chat/chat_storage";
 import { ChatSendResponse } from "@/data/dto/chat/chat_send_response";
-import { formatDate, Result } from "@/utils";
+import { formatDate, Result, Logger } from "@/utils";
+
+const log = new Logger("StoresChatChatMachineHelpers");
 
 // ============================================================
 // Constants
@@ -161,7 +163,7 @@ export async function readAndSyncHistory(): Promise<{
     Result.isOk(localResult) && localResult.data
       ? localMessagesToUi(localResult.data)
       : [];
-  console.log("[chat-machine] loadHistory LOCAL DONE", {
+  log.debug("[chat-machine] loadHistory LOCAL DONE", {
     count: localMessages.length,
   });
 
@@ -169,7 +171,7 @@ export async function readAndSyncHistory(): Promise<{
   const networkResult = await chatRepo.getHistory(PAGE_SIZE, 0);
   if (!Result.isOk(networkResult)) {
     // network 失败 —— 返空 messages（不让 UI 卡住）
-    console.error(
+    log.error(
       "[chat-machine] loadHistory NETWORK FAILED",
       networkResult.success ? null : (networkResult as { error: unknown }).error,
     );
@@ -178,7 +180,7 @@ export async function readAndSyncHistory(): Promise<{
     const fallbackMessages =
       localMessages.length === 0 ? [greetingMessage] : localMessages;
     if (fallbackMessages[0] === greetingMessage) {
-      console.log(
+      log.debug(
         "[chat-machine] loadHistory EMPTY → prepend greeting (network-failed path)",
       );
     }
@@ -192,14 +194,14 @@ export async function readAndSyncHistory(): Promise<{
     };
   }
   const networkUi = localMessagesToUi(networkResult.data.messages);
-  console.log("[chat-machine] loadHistory NETWORK DONE", {
+  log.debug("[chat-machine] loadHistory NETWORK DONE", {
     count: networkUi.length,
   });
 
   // 3. 用 network 覆盖 local
   const saveResult = await chatRepo.saveMessagesToLocal(networkResult.data.messages);
   const localOverwritten = Result.isOk(saveResult);
-  console.log("[chat-machine] loadHistory SAVE TO LOCAL DONE", {
+  log.debug("[chat-machine] loadHistory SAVE TO LOCAL DONE", {
     localOverwritten,
   });
 
@@ -207,7 +209,7 @@ export async function readAndSyncHistory(): Promise<{
   const finalMessages =
     networkUi.length === 0 ? [greetingMessage] : networkUi;
   if (finalMessages[0] === greetingMessage) {
-    console.log("[chat-machine] loadHistory EMPTY → prepend greeting");
+    log.debug("[chat-machine] loadHistory EMPTY → prepend greeting");
   }
 
   return {