fix(update): 修复华为上传URL NPE及提交批次超时限制

- submitToHuawei: urlList 字段做防御性处理，找不到时降级到 data，
  同时输出实际响应内容方便排查
- executeSubmitAsync: allOf.join() 改为 get(20, MINUTES)，
  防止大文件上传卡住时批次线程永久阻塞

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

update-service/src/main/java/com/xuqm/update/service/StoreSubmissionService.java

@@ -228,7 +228,15 @@ public class StoreSubmissionService {
                 }))
                 .toList();
         if (!futures.isEmpty()) {
-            CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+            try {
+                CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]))
+                        .get(20, java.util.concurrent.TimeUnit.MINUTES);
+            } catch (java.util.concurrent.TimeoutException te) {
+                log.error("Store submit batch timed out after 20 minutes for version={}", versionId);
+                futures.forEach(f -> f.cancel(true));
+            } catch (Exception e) {
+                log.error("Store submit batch wait error for version={}: {}", versionId, e.getMessage());
+            }
         }
         recordBatchEvent(v, versionId, batchId, "STORE_SUBMIT_BATCH_END", startedAt, Map.of(
                 "targets", targets,
@@ -285,8 +293,12 @@ public class StoreSubmissionService {
 
         // 3. Request upload URL
         Map<String, Object> uploadUrlResp = huaweiGetUploadUrl(clientId, token, hwAppId, file);
-        @SuppressWarnings("unchecked")
-        Map<String, Object> urlInfo = (Map<String, Object>) ((List<?>) uploadUrlResp.get("urlList")).get(0);
+        List<Map<String, Object>> urlList = asMapList(uploadUrlResp.get("urlList"));
+        if (urlList.isEmpty()) urlList = asMapList(uploadUrlResp.get("data"));
+        if (urlList.isEmpty()) {
+            throw new RuntimeException("Huawei: upload url response missing urlList, response=" + summarizeMap(uploadUrlResp));
+        }
+        Map<String, Object> urlInfo = urlList.get(0);
         String uploadUrl = (String) urlInfo.get("url");
         @SuppressWarnings("unchecked")
         Map<String, String> uploadHeaders = (Map<String, String>) urlInfo.get("headers");