fix: extend watermark remove polling timeout

app/api/watermark-remove/route.ts

@@ -28,7 +28,7 @@ async function getWatermarkRemoveConfig() {
 
 // 轮询获取处理结果
 async function pollForResult(taskId: string, apiKey: string): Promise<{ success: boolean; imageUrl?: string; error?: string }> {
-  const maxAttempts = 30; // 最多轮询30次（30秒）
+  const maxAttempts = 180; // 最多轮询180次（约3分钟）
   const pollInterval = 1000; // 每次间隔1秒
 
   for (let attempt = 0; attempt < maxAttempts; attempt++) {
@@ -54,19 +54,25 @@ async function pollForResult(taskId: string, apiKey: string): Promise<{ success:
       const result = await response.json();
       console.log(`[WatermarkRemove] 轮询结果 (attempt ${attempt + 1}):`, JSON.stringify(result).substring(0, 200));
 
+      const state = result.data?.state;
+      const stateDetail = result.data?.state_detail;
+
       // 检查任务状态
-      if (result.data?.state === 1) {
+      if (state === 1) {
         // 任务完成 - PicWish API 返回 "file" 字段
         const imageUrl = result.data?.file || result.data?.image;
         if (imageUrl) {
           return { success: true, imageUrl };
         }
         return { success: false, error: "处理完成但未返回图片URL" };
-      } else if (result.data?.state === -1 || result.data?.state < 0) {
+      } else if (typeof state === "number" && state < 0) {
         // 任务失败
         return { success: false, error: result.data?.error || "去水印处理失败" };
+      } else if (state === 4 || state === 0) {
+        // 明确处理中状态，继续轮询
+        console.log(`[WatermarkRemove] 任务处理中: state=${state}, detail=${stateDetail || "N/A"}`);
       }
-      // state === 0 表示处理中，继续轮询
+      // 其他状态默认继续轮询
 
       await new Promise(resolve => setTimeout(resolve, pollInterval));
     } catch (error) {
@@ -75,7 +81,7 @@ async function pollForResult(taskId: string, apiKey: string): Promise<{ success:
     }
   }
 
-  return { success: false, error: "处理超时，请稍后重试" };
+  return { success: false, error: "去水印任务处理超时（服务端仍在处理中），请稍后重试" };
 }
 
 export async function POST(request: NextRequest) {