Improve generation task client errors

src/api/aiGenerationClient.ts

@@ -159,7 +159,7 @@ function normalizeTaskStatus(status: AiTaskStatus["status"]): WebGenerationPrevi
 function taskTitle(task: AiTaskStatus): string {
   const prompt = typeof task.params?.prompt === "string" ? task.params.prompt.trim() : "";
   if (prompt) return prompt.length > 20 ? `${prompt.slice(0, 20)}...` : prompt;
-  return task.type === "video" ? "视频生成任务" : "图像生成任务";
+  return task.type === "video" ? "\u89c6\u9891\u751f\u6210\u4efb\u52a1" : "\u56fe\u50cf\u751f\u6210\u4efb\u52a1";
 }
 
 function toPreviewTask(task: AiTaskStatus): WebGenerationPreviewTask {
@@ -512,7 +512,7 @@ export const aiGenerationClient = {
     }
 
     const reader = res.body?.getReader();
-    if (!reader) throw new Error("无法读取响应流");
+    if (!reader) throw new Error("\u65e0\u6cd5\u8bfb\u53d6\u54cd\u5e94\u6d41");
 
     const decoder = new TextDecoder();
     let buffer = "";

src/api/taskSubscription.ts

@@ -54,15 +54,13 @@ export function waitForTask(
       if (event.status === "completed") {
         settle(() => resolve(event.resultUrl || null));
       } else if (event.status === "failed" || event.status === "cancelled") {
-        settle(() => reject(new Error(event.error || "任务失败")));
+        settle(() => reject(new Error(event.error || "任务失败，请稍后重试")));
       }
     };
 
-    // Try SSE first
     cleanup = aiGenerationClient.subscribeTaskStatus(taskId, handleUpdate);
     sseConnected = true;
 
-    // Fallback: if SSE doesn't deliver any event within 5s, switch to polling
     fallbackTimerId = setTimeout(() => {
       if (settled || !sseConnected) return;
       if (cleanup) cleanup();
@@ -72,7 +70,10 @@ export function waitForTask(
     function startPolling() {
       const poll = async () => {
         while (!settled) {
-          if (abortRef?.current) { settle(() => resolve(null)); return; }
+          if (abortRef?.current) {
+            settle(() => resolve(null));
+            return;
+          }
           await new Promise((r) => setTimeout(r, POLL_INTERVAL));
           if (settled || abortRef?.current) return;
           try {

src/api/webGenerationGateway.ts

@@ -103,7 +103,7 @@ export const webGenerationGateway = {
         prompt,
         createdAt,
         source: "server",
-        errorMessage: err instanceof Error ? err.message : "请求失败",
+        errorMessage: err instanceof Error ? err.message : "请求失败，请稍后重试",
       };
     }
   },