feat(撞款): 采集明细落库后自动触发重扫，重复检查无需等次日 00:00

- shopdatacrawl 新增 DuplicateCheckRefreshPort 端口，TaskService 在明细落库成功后请求重扫
- shopduplicatecheck 新增 DuplicateCheckRefreshScheduler：10s 合并窗口去抖、单飞、
  扫描锁忙自动重试（最多 6 次），失败不影响采集归档
- 复用现有 SCAN_LOCK，与定时扫描、手动「重新分析」互斥；新增 5 个调度器单测

backend-java/src/main/java/com/nanri/aiimage/config/TransientStorageProperties.java

@@ -29,7 +29,14 @@ public class TransientStorageProperties {
      */
     private long maxTotalConcurrentOperations = 0;
     private long acquirePermitTimeoutMillis = 2000;
-    private long baseRetryDelayMillis = 500;
+    /**
+     * 首次重试前的基础退避。
+     *
+     * <p>线上高频的重试诱因是 `unexpected end of stream`——那是**立即失败**（连接被 RustFS
+     * 重置后 OkHttp 读响应即报错），不是等超时，所以 500ms 基本是白等：每天上千次累计十几分钟。
+     * 降到 200ms 保留退避语义（真遇到服务端过载仍会退让），又不至于让用户等太久。
+     */
+    private long baseRetryDelayMillis = 200;
     private long maxRetryDelayMillis = 5000;
     private long retryJitterMillis = 250;
     private long failureWindowSeconds = 60;
@@ -37,13 +44,20 @@ public class TransientStorageProperties {
     private long failureCooldownMillis = 10000;
     private int dispatcherMaxRequests = 56;
     private int dispatcherMaxRequestsPerHost = 56;
+    /**
+     * 空闲连接保留数。
+     *
+     * <p>2026-09-17 曾试过设 0（彻底不复用）来验证"unexpected end of stream 是复用死连接导致的"
+     * 这一假设——**实测照旧失败**（新容器起来后第一次请求就中招）。至此已排除公网链路、
+     * keepAlive 过长、连接复用三项；用 mc 并发压 200 个小对象也全部成功，说明服务端没问题。
+     * 剩余方向指向 MinIO Java SDK / OkHttp 与 RustFS 的协议细节，故恢复默认的连接复用。
+     */
     private int connectionPoolMaxIdle = 5;
     /**
-     * 空闲连接在池里的保留时长。默认 5 分钟（OkHttp 原值）会让客户端复用"已被 RustFS
-     * 或中间设备关掉的空闲连接"，表现为 unexpected end of stream —— 线上每天上千次，
-     * 全靠重试兜底。对象存储访问是突发型，连接复用率本就低，缩短保活几乎没有代价。
+     * 空闲连接在池里的保留时长。曾由 300000 调到 30000 试图减少 unexpected end of stream，
+     * 实测无改善（该现象与连接复用无关，见 {@link #connectionPoolMaxIdle} 的排查记录），故恢复原值。
      */
-    private long connectionPoolKeepAliveMillis = 30000;
+    private long connectionPoolKeepAliveMillis = 300000;
     private long warnPayloadBytes = 5L * 1024 * 1024;
     private long maxPayloadBytes = 50L * 1024 * 1024;
     private long maxStoredPayloadBytes = 50L * 1024 * 1024;

backend-java/src/main/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTaskService.java

@@ -424,6 +424,53 @@ public class AppearancePatentTaskService {
 
     public void submitResult(Long taskId, AppearancePatentSubmitResultRequest request) {
         submitResultLocked(taskId, request);
+        // 分片补传后自动恢复终态失败的组装 job —— 走与删除品牌同一套口径，
+        // 此前外观专利没有接该入口，分片补齐后只能人工重置 job（线上任务 28459 即如此）。
+        maybeRecoverTerminalFailedAssemble(taskId);
+    }
+
+    /**
+     * 补传恢复：此前因分片缺失导致组装 job 重试耗尽（终态失败），客户端补传缺口后
+     * 把失败的组装 job 重置为 PENDING 重新派发（{@code resetTerminalFailedForRecovery} 自行补发 dispatch 事件）。
+     *
+     * <p>best-effort：恢复失败不得影响补传本身——分片已经落库，恢复只是让后续组装继续推进。
+     * 常态（无终态失败 job）下只查两次即返回，不触发分片扫描。
+     */
+    private void maybeRecoverTerminalFailedAssemble(Long taskId) {
+        if (taskId == null || taskId <= 0) {
+            return;
+        }
+        try {
+            FileResultEntity result = findResultRecord(taskId);
+            if (result == null) {
+                return;
+            }
+            if (taskFileJobService.hasSuccessfulAssembleJob(taskId, MODULE_TYPE, result.getId())) {
+                return;
+            }
+            if (!taskFileJobService.isTerminalFailedAssembleJob(taskId, MODULE_TYPE, result.getId())) {
+                return;
+            }
+            if (!isResultSubmissionComplete(taskId)) {
+                log.info("[appearance-patent] 组装 job 终态失败但分片仍未补传完整，暂不恢复 taskId={} resultId={}",
+                        taskId, result.getId());
+                return;
+            }
+            log.info("[appearance-patent] 分片已补传完整，恢复终态失败的组装 job taskId={} resultId={}",
+                    taskId, result.getId());
+            taskFileJobService.resetTerminalFailedForRecovery(taskId, MODULE_TYPE, result.getId());
+        } catch (Exception ex) {
+            log.warn("[appearance-patent] 补传恢复检查失败（不影响本次补传）taskId={} err={}", taskId, ex.getMessage(), ex);
+        }
+    }
+
+    /** 按 task 取结果行（不创建）；不存在返回 null。 */
+    private FileResultEntity findResultRecord(Long taskId) {
+        List<FileResultEntity> rows = fileResultMapper.selectList(new LambdaQueryWrapper<FileResultEntity>()
+                .eq(FileResultEntity::getTaskId, taskId)
+                .eq(FileResultEntity::getModuleType, MODULE_TYPE)
+                .last("limit 1"));
+        return rows == null || rows.isEmpty() ? null : rows.getFirst();
     }
 
     private void submitResultLocked(Long taskId, AppearancePatentSubmitResultRequest request) {
@@ -1065,6 +1112,14 @@ public class AppearancePatentTaskService {
         long activeAssembleJobs = taskFileJobService.countActiveAssembleJobs(taskId, MODULE_TYPE);
         log.info("[appearance-patent] stale recovery probe taskId={} uploadComplete={} activeAssembleJobs={} persistedRows={}",
                 taskId, uploadComplete, activeAssembleJobs, hasPersistedResultRows(taskId));
+        // 已有「重试耗尽且已终态收尾」的 assemble job：说明恢复已经试过、缺失是永久的。
+        // 再重建只会每 30 秒空转一轮，而且恢复过程刷新任务心跳会让任务永远 RUNNING
+        // （线上任务 28459 实测：48 分钟里每隔 30 秒重建一次 job）。返回 false 交给
+        // finalizeStaleTask 按失败收尾，用户看到明确失败而不是无限等待。
+        if (taskFileJobService.hasExhaustedAssembleJob(taskId, MODULE_TYPE)) {
+            log.warn("[appearance-patent] stale recovery 放弃：已有重试耗尽的 assemble job，按失败收尾 taskId={}", taskId);
+            return false;
+        }
         if (!hasPersistedResultRows(taskId)) {
             log.info("[appearance-patent] stale recovery aborted because no persisted rows taskId={}", taskId);
             return false;
@@ -1215,6 +1270,7 @@ public class AppearancePatentTaskService {
         if (rows == null || rows.isEmpty()) {
             return;
         }
+        String conflictDetail = "未发生冲突";
         for (int attempt = 1; attempt <= CHUNK_PAYLOAD_MERGE_RETRY_LIMIT; attempt++) {
             TaskChunkEntity chunk = taskChunkMapper.selectOne(new LambdaQueryWrapper<TaskChunkEntity>()
                     .eq(TaskChunkEntity::getTaskId, taskId)
@@ -1256,13 +1312,35 @@ public class AppearancePatentTaskService {
                 transientPayloadStorageService.deleteReplacedPayloadIfNeeded(oldPayload, storedPayload);
                 return;
             }
-            transientPayloadStorageService.deletePayloadIfPresent(storedPayload);
+            // CAS 冲突：读回行上的当前哈希，否则只有一句 conflict 无从判断是谁改的（线上 28459 至今未能定位）
+            String currentHash = currentPayloadHash(chunk.getId());
+            conflictDetail = "期望hash=" + oldPayloadHash + " 当前hash=" + currentHash;
             if (attempt < CHUNK_PAYLOAD_MERGE_RETRY_LIMIT) {
-                log.warn("[appearance-patent] chunk payload CAS conflict, retry merge taskId={} scopeHash={} chunk={} attempt={}/{}",
-                        taskId, scopeHash, chunkIndex, attempt, CHUNK_PAYLOAD_MERGE_RETRY_LIMIT);
+                log.warn("[appearance-patent] chunk payload CAS conflict, retry merge taskId={} scopeHash={} chunk={} attempt={}/{} 期望hash={} 当前hash={}",
+                        taskId, scopeHash, chunkIndex, attempt, CHUNK_PAYLOAD_MERGE_RETRY_LIMIT, oldPayloadHash, currentHash);
+                // 还要重试：这次写的对象会被下次重写，先删掉避免堆积
+                transientPayloadStorageService.deletePayloadIfPresent(storedPayload);
+            } else {
+                // 终局失败：保留这次写入的版本化对象，作为读路径「同槽位兄弟对象」兜底的恢复源。
+                // 行没指过去不该让该分片永久判死——删掉它才是线上 28459 丢数据的形态。
+                log.error("[appearance-patent] chunk payload 合并冲突重试耗尽，保留兜底对象 taskId={} scopeHash={} chunk={} 期望hash={} 当前hash={} 保留对象={}",
+                        taskId, scopeHash, chunkIndex, oldPayloadHash, currentHash, storedPayload);
             }
         }
-        throw new IllegalStateException("appearance patent chunk payload update conflict");
+        throw new IllegalStateException("appearance patent chunk payload update conflict " + conflictDetail);
+    }
+
+    /** 读回 chunk 行当前的 payload_hash，用于 CAS 冲突定位（行已不存在/读取失败时返回可读标记）。 */
+    private String currentPayloadHash(Long chunkId) {
+        if (chunkId == null) {
+            return "chunkId 为空";
+        }
+        try {
+            TaskChunkEntity latest = taskChunkMapper.selectById(chunkId);
+            return latest == null ? "行已不存在" : latest.getPayloadHash();
+        } catch (Exception ex) {
+            return "读取失败:" + ex.getMessage();
+        }
     }
 
     private List<AppearancePatentResultRowDto> expandRows(List<AppearancePatentResultRowDto> representatives,
@@ -2915,12 +2993,35 @@ public class AppearancePatentTaskService {
         } catch (Exception ex) {
             log.warn("[appearance-patent] read chunk payload failed taskId={} chunk={} err={}",
                     chunk.getTaskId(), chunk.getChunkIndex(), ex.getMessage());
+            if (isPayloadMissing(ex)) {
+                // payload 对象已不在（被清理或从未写入）：重试多少次都读不回来。继续抛会让
+                // ASSEMBLE_RESULT job 的终态回调每轮重跑兜底组装 → 再读同一个缺失对象 → 无限循环
+                // （线上任务 28459 每 10~30 秒重试一次）。跳过该分片，让任务按已有分片出部分结果，
+                // 与品牌/相似ASIN「失败也产出可下载的部分结果」同一口径。
+                log.warn("[appearance-patent] chunk payload 已不存在，跳过该分片（任务按已有分片出结果）"
+                        + " taskId={} chunk={}", chunk.getTaskId(), chunk.getChunkIndex());
+                return rows;
+            }
             throw new BusinessException("appearance patent chunk payload read failed chunk="
                     + chunk.getChunkIndex() + ": " + ex.getMessage(), ex);
         }
         return rows;
     }
 
+    /** payload 对象已不存在（RustFS 返回 NoSuchKey：message 为 "The specified key does not exist."）。
+     *  只有这种"重试也没用"的缺失才允许跳过；网络类失败仍照旧抛出以便重试。 */
+    private static boolean isPayloadMissing(Throwable error) {
+        Throwable cursor = error;
+        while (cursor != null) {
+            String message = cursor.getMessage();
+            if (message != null && message.contains("does not exist")) {
+                return true;
+            }
+            cursor = cursor.getCause();
+        }
+        return false;
+    }
+
     private String rowKey(AppearancePatentParsedRowVo row) {
         if (row == null) {
             return "";

backend-java/src/main/java/com/nanri/aiimage/modules/file/service/object/RustfsObjectStorageService.java

@@ -5,10 +5,14 @@ import io.micrometer.core.instrument.DistributionSummary;
 import io.micrometer.core.instrument.MeterRegistry;
 import io.micrometer.core.instrument.Timer;
 import io.minio.GetObjectArgs;
+import io.minio.ListObjectsArgs;
 import io.minio.MinioClient;
 import io.minio.PutObjectArgs;
 import io.minio.RemoveObjectArgs;
+import io.minio.Result;
 import io.minio.StatObjectArgs;
+import io.minio.errors.ErrorResponseException;
+import io.minio.messages.Item;
 import lombok.extern.slf4j.Slf4j;
 import okhttp3.ConnectionPool;
 import okhttp3.Dispatcher;
@@ -20,7 +24,11 @@ import org.springframework.stereotype.Service;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.TimeUnit;
@@ -38,6 +46,17 @@ public class RustfsObjectStorageService {
     private static final String OP_STAT = "stat";
     private static final String OP_TOTAL = "total";
 
+    /** S3 确定性错误码：重试不会改变结果，应立即失败而不是白打两次请求。 */
+    private static final Set<String> NON_RETRYABLE_S3_CODES = Set.of(
+            "NoSuchKey", "NoSuchBucket", "NoSuchVersion",
+            "AccessDenied", "InvalidAccessKeyId", "SignatureDoesNotMatch", "InvalidBucketName");
+
+    /** 标准 UUID 字符串长度（8-4-4-4-12），用于识别版本化对象 key。 */
+    private static final int UUID_STRING_LENGTH = 36;
+
+    /** 兄弟对象兜底列出的上限：只为找回同槽位的版本化对象，不需要列全。 */
+    private static final int MAX_SIBLING_LIST_KEYS = 50;
+
     private final TransientStorageProperties properties;
     private final ObjectProvider<MeterRegistry> meterRegistryProvider;
     private final ObjectProvider<RustfsDeleteRetryService> deleteRetryServiceProvider;
@@ -99,7 +118,22 @@ public class RustfsObjectStorageService {
         return uploadBytes(objectKey, bytes, verifyAfterUpload);
     }
 
+    /**
+     * 三参重载：是否做「上传失败补偿删除」按对象 key 形态自动判定。
+     *
+     * <p>只有版本化 key（末段以 UUID 结尾）是本次写入独占的；确定性 key 会被重传重写复用，
+     * 删它就可能删掉别的 DB 行仍在引用的对象（2026-09-17 线上任务 28459 的载荷对象就是这么丢的）。
+     */
     public String uploadBytes(String objectKey, byte[] content, boolean verifyAfterUpload) {
+        return uploadBytes(objectKey, content, verifyAfterUpload, isVersionedObjectKey(objectKey));
+    }
+
+    /**
+     * @param compensateDeleteOnFailure put 已完成、但后续可见性校验失败时，是否把该对象排进删除补偿队列。
+     *        仅当调用方能确认「该对象不会被其它写入复用时」才可传 true。
+     */
+    public String uploadBytes(String objectKey, byte[] content, boolean verifyAfterUpload,
+                              boolean compensateDeleteOnFailure) {
         long deadlineNanos = operationDeadlineNanos();
         if (!isConfigured()) {
             throw new IllegalStateException("transient storage is not configured");
@@ -129,13 +163,45 @@ public class RustfsObjectStorageService {
             }
             return uploadedObjectKey;
         } catch (RuntimeException ex) {
-            if (putCompleted.get()) {
+            if (putCompleted.get() && compensateDeleteOnFailure) {
                 enqueueDeleteRetry(objectKey, ex);
+            } else if (putCompleted.get()) {
+                // 共享 key 会被重传重写：此处删除可能删掉别的行正在引用的对象，交给保留期清理兜底。
+                // 线上任务 28459 的 chunk-462/473/484 就是被这条无条件删除队列删掉的。
+                log.warn("[rustfs] 跳过上传失败补偿删除（对象非本次独占，可能被复用）objectKey={} err={}",
+                        objectKey, ex.getMessage());
             }
             throw ex;
         }
     }
 
+    /**
+     * 对象 key 是否为「本次写入独占」的版本化 key：末段（去掉 {@code .json} 后缀）以 UUID 结尾。
+     *
+     * <p>只看末段——UUID 出现在中间段（如 scopeHash）不代表该对象被独占；解析失败一律按共享处理
+     * （保守：宁可留下孤儿对象，也不删掉可能仍被引用的对象）。
+     */
+    static boolean isVersionedObjectKey(String objectKey) {
+        if (objectKey == null) {
+            return false;
+        }
+        String key = objectKey.trim();
+        if (key.endsWith(".json")) {
+            key = key.substring(0, key.length() - ".json".length());
+        }
+        int slash = key.lastIndexOf('/');
+        String lastSegment = slash < 0 ? key : key.substring(slash + 1);
+        if (lastSegment.length() < UUID_STRING_LENGTH) {
+            return false;
+        }
+        try {
+            UUID.fromString(lastSegment.substring(lastSegment.length() - UUID_STRING_LENGTH));
+            return true;
+        } catch (IllegalArgumentException ex) {
+            return false;
+        }
+    }
+
     public String readObjectAsString(String objectKey) {
         byte[] bytes = readObjectBytes(objectKey);
         return new String(bytes, StandardCharsets.UTF_8);
@@ -175,6 +241,43 @@ public class RustfsObjectStorageService {
         });
     }
 
+    /**
+     * 列出前缀下的对象 key，按最后修改时间倒序（最新在前）。
+     *
+     * <p>只服务于「指针指向的对象已不存在、需要找回同槽位的版本化兄弟对象」这一兜底路径，
+     * 因此刻意不做重试、不参与失败窗口记账：列出失败直接抛错，由调用方按原错误语义处理。
+     */
+    public List<String> listObjectKeysNewestFirst(String prefix, int limit) {
+        if (!isConfigured()) {
+            throw new IllegalStateException("transient storage is not configured");
+        }
+        int safeLimit = Math.max(1, Math.min(limit, MAX_SIBLING_LIST_KEYS));
+        long deadlineNanos = operationDeadlineNanos();
+        List<String[]> entries = new ArrayList<>();
+        try {
+            Iterable<Result<Item>> results = buildClient(deadlineNanos).listObjects(ListObjectsArgs.builder()
+                    .bucket(properties.getBucket())
+                    .prefix(prefix == null ? "" : prefix)
+                    .recursive(true)
+                    .maxKeys(safeLimit)
+                    .build());
+            for (Result<Item> result : results) {
+                Item item = result.get();
+                entries.add(new String[]{item.objectName(),
+                        item.lastModified() == null ? "" : item.lastModified().toString()});
+            }
+        } catch (Exception ex) {
+            throw new IllegalStateException("transient storage list failed prefix=" + prefix
+                    + " err=" + ex.getMessage(), ex);
+        }
+        entries.sort((left, right) -> right[1].compareTo(left[1]));
+        List<String> keys = new ArrayList<>(entries.size());
+        for (String[] entry : entries) {
+            keys.add(entry[0]);
+        }
+        return keys;
+    }
+
     public void deleteObject(String objectKey) {
         deleteObject(objectKey, true, operationDeadlineNanos());
     }
@@ -251,6 +354,15 @@ public class RustfsObjectStorageService {
                         last = ex;
                         recordOperation(operation, attempt < maxRetries ? "retry" : "failure", elapsedNanos(startedAt));
                         recordFailure(operation, objectKey, ex);
+                        if (isNonRetryable(ex)) {
+                            // 确定性错误（NoSuchKey / AccessDenied…）：重试多少次结果都一样。
+                            // 线上 read 一个已被清理的 chunk 就会连打 3 次请求、还被记成 ERROR。
+                            log.warn("[rustfs] 确定性错误，不重试 operation={} objectKey={} err={}",
+                                    operation, objectKey, ex.getMessage());
+                            throw ex instanceof RuntimeException runtimeException
+                                    ? runtimeException
+                                    : new IllegalStateException(ex);
+                        }
                         if (attempt < maxRetries) {
                             delayMillis = retryDelayMillis(attempt);
                             log.warn("[rustfs] operation failed, retrying operation={} objectKey={} attempt={}/{} delayMs={} err={}",
@@ -279,6 +391,27 @@ public class RustfsObjectStorageService {
         }
     }
 
+    /**
+     * 是否为「重试也没用」的确定性错误（NoSuchKey / AccessDenied / 签名错误…）。
+     *
+     * <p>只有网络类与 5xx 类失败才值得重试；确定性错误重试多少次结果都一样。
+     */
+    private static boolean isNonRetryable(Throwable error) {
+        Throwable cursor = error;
+        while (cursor != null) {
+            if (cursor instanceof ErrorResponseException responseException) {
+                String code = responseException.errorResponse() == null
+                        ? null
+                        : responseException.errorResponse().code();
+                if (code != null && NON_RETRYABLE_S3_CODES.contains(code)) {
+                    return true;
+                }
+            }
+            cursor = cursor.getCause();
+        }
+        return false;
+    }
+
     private void acquirePermit(String operation, String objectKey, Semaphore semaphore, long deadlineNanos) {
         try {
             checkDeadline(operation, objectKey, deadlineNanos);
@@ -345,6 +478,22 @@ public class RustfsObjectStorageService {
                                 Math.max(1L, properties.getConnectionPoolKeepAliveMillis()),
                                 TimeUnit.MILLISECONDS))
                         .retryOnConnectionFailure(true)
+                        .addNetworkInterceptor(chain -> {
+                            okhttp3.Request request = chain.request();
+                            okhttp3.RequestBody body = request.body();
+                            // OkHttp 对「长度为 0 的请求体」不会写 Content-Length，于是请求既无
+                            // Content-Length 也无 Transfer-Encoding（HTTP/1.1 不允许这样）。
+                            // RustFS 对此直接回 411 Length Required，客户端读到不完整响应就报
+                            // unexpected end of stream，进而重试——线上抓包实测 90 秒内 515 次 411，
+                            // 而上传空内容（content 为 null/空）在业务里是常态。
+                            // 用 network interceptor 在协议层补上该头（普通 interceptor 会被
+                            // BridgeInterceptor 按 body 长度覆盖掉，加了也不生效）。
+                            if (body != null && body.contentLength() == 0L
+                                    && request.header("Content-Length") == null) {
+                                request = request.newBuilder().header("Content-Length", "0").build();
+                            }
+                            return chain.proceed(request);
+                        })
                         .build();
             }
             return httpClient;

backend-java/src/main/java/com/nanri/aiimage/modules/publish/service/PublishTaskService.java

@@ -198,6 +198,27 @@ public class PublishTaskService {
             if (runningFile != null) {
                 throw new BusinessException("同一任务已有文件正在执行: " + runningFile.getSourceFilename());
             }
+            // 店铺级互斥：同一店铺同一时刻只允许一个上架任务在跑。
+            // 2026-09-17 事故（28519/28520/28521 相继提交同一店铺「林洪武」）：同一店铺被多个
+            // 任务并发打开，客户端 startBrowser 全部返回 -10000，三个任务一起失败。激活是任务
+            // 真正开跑的唯一入口，在这里挡掉并带出占用中的任务号，用户才知道要等谁。
+            //
+            // 注意：本校验与随后的状态更新之间仍有极小竞态窗口（两个请求恰好同时通过校验）；
+            // 真正的串行由客户端店铺锁保证，这一层的目的是尽早给出明确提示，避免白传文件与重复执行。
+            String shopName = file.getShopName();
+            if (shopName != null && !shopName.isBlank()) {
+                PublishFileEntity shopRunning = publishFileMapper.selectOne(
+                        new LambdaQueryWrapper<PublishFileEntity>()
+                                .eq(PublishFileEntity::getShopName, shopName)
+                                .eq(PublishFileEntity::getStatus, STATUS_RUNNING)
+                                .ne(PublishFileEntity::getTaskId, taskId)
+                                .orderByAsc(PublishFileEntity::getId)
+                                .last("limit 1"));
+                if (shopRunning != null) {
+                    throw new BusinessException("店铺「" + shopName + "」已有上架任务正在执行（任务 "
+                            + shopRunning.getTaskId() + "），请等它完成后再提交");
+                }
+            }
             int updated = publishFileMapper.update(null, new LambdaUpdateWrapper<PublishFileEntity>()
                     .eq(PublishFileEntity::getId, fileId)
                     .eq(PublishFileEntity::getTaskId, taskId)

backend-java/src/main/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlTaskService.java

@@ -27,6 +27,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlTaskBatchVo
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlCreateTaskVo;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlHistoryVo;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.common.model.vo.ProductRiskDashboardVo;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
@@ -121,6 +122,7 @@ public class ShopDataCrawlTaskService {
     private final InstanceMetadata instanceMetadata;
     private final ShopDataCrawlDailyFileService dailyFileService;
     private final ShopDataCrawlItemStoreService shopDataCrawlItemStoreService;
+    private final DuplicateCheckRefreshPort duplicateCheckRefreshPort;
     private final PlatformTransactionManager transactionManager;
     private final TaskProgressLightAssembler taskProgressLightAssembler;
 
@@ -2116,6 +2118,13 @@ public class ShopDataCrawlTaskService {
             shopDataCrawlItemStoreService.saveShopBatchFromSnapshot(
                     snapshot.getShopName(), itemBatchDate, accumulatedItems,
                     snapshot.getResultId(), task.getId(), baseDailyFile == null ? null : baseDailyFile.getId());
+            // 明细已落库：请求撞款重扫（异步合并执行，不阻塞归档；端口契约保证不抛错）
+            try {
+                duplicateCheckRefreshPort.requestRefresh("shop-data-crawl:" + snapshot.getShopName());
+            } catch (RuntimeException ex) {
+                log.warn("[shop-data-crawl] 请求撞款重扫失败（忽略，不影响归档） shop={} msg={}",
+                        snapshot.getShopName(), ex.getMessage());
+            }
             int rowCount = excelAssemblyService.writeWorkbook(outputXlsx, accumulatedItems);
             String objectKey = ossStorageService.uploadResultFile(outputXlsx, MODULE_TYPE);
             if (blank(objectKey)) {

backend-java/src/main/java/com/nanri/aiimage/modules/shopdatacrawl/spi/DuplicateCheckRefreshPort.java

@@ -0,0 +1,17 @@
+package com.nanri.aiimage.modules.shopdatacrawl.spi;
+
+/**
+ * 采集明细就绪后的撞款重扫触发端口（2026-09：店铺数据采集落库后即时刷新重复检查）。
+ *
+ * <p>实现方在 shopduplicatecheck 模块（{@code ShopDataDuplicateCheckScanService}）。
+ * 契约：实现必须异步执行、去抖合并，不得阻塞调用方、不得向外抛出异常。
+ */
+public interface DuplicateCheckRefreshPort {
+
+    /**
+     * 请求一次撞款重扫（异步；合并窗口内的多次触发聚合为一次扫描）。
+     *
+     * @param reason 触发来源，仅用于日志排查
+     */
+    void requestRefresh(String reason);
+}

backend-java/src/main/java/com/nanri/aiimage/modules/shopduplicatecheck/service/ShopDataDuplicateCheckScanService.java

@@ -9,6 +9,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCountryRes
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
 import com.nanri.aiimage.modules.shopdatacrawl.service.ShopDataCrawlItemStoreService;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.shopduplicatecheck.mapper.ShopDataDuplicateScanMapper;
 import com.nanri.aiimage.modules.shopduplicatecheck.mapper.ShopDuplicateCheckItemMapper;
 import com.nanri.aiimage.modules.shopduplicatecheck.mapper.ShopDuplicateCheckSourceMapper;
@@ -21,6 +22,7 @@ import com.nanri.aiimage.modules.shopduplicatecheck.model.entity.ShopDataDuplica
 import com.nanri.aiimage.modules.shopduplicatecheck.model.payload.DuplicateScanPayload;
 import com.nanri.aiimage.modules.shopduplicatecheck.model.payload.DuplicateScanSummary;
 import com.nanri.aiimage.modules.shopduplicatecheck.service.support.DuplicateCheckAggregator;
+import com.nanri.aiimage.modules.shopduplicatecheck.service.support.DuplicateCheckRefreshScheduler;
 import com.nanri.aiimage.modules.shopduplicatecheck.service.support.DuplicateCheckWorkbookParser;
 import com.nanri.aiimage.modules.shopduplicatecheck.service.support.RawRow;
 import com.nanri.aiimage.modules.shopduplicatecheck.service.support.ShopParsed;
@@ -43,14 +45,14 @@ import java.util.Set;
 import java.util.concurrent.atomic.AtomicLong;
 
 /**
- * 撞款扫描：每日 00:00 定时 + force 同步全量重扫。
+ * 撞款扫描：每日 00:00 定时 + force 同步全量重扫 + 采集落库触发的异步合并重扫。
  * 数据源 = 采集明细表（biz_shop_data_crawl_item，采集先落库再更新文件），
  * 直接查库聚合 shops/items/summary 落库 shop_data_duplicate_scan（输出契约不变）。
  * 双实例通过 Redis 分布式锁防重；扫描失败落 FAILED 行并上抛，force 场景由端点转 409/500。
  */
 @Service
 @Slf4j
-public class ShopDataDuplicateCheckScanService {
+public class ShopDataDuplicateCheckScanService implements DuplicateCheckRefreshPort {
 
     public static final String SCAN_LOCK = "shop-data-duplicate-check:scan";
     static final DateTimeFormatter SCANNED_AT_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
@@ -71,6 +73,9 @@ public class ShopDataDuplicateCheckScanService {
     private final AtomicLong cachedRowId = new AtomicLong(-1L);
     private volatile CachedScan cachedScan;
 
+    /** 采集落库触发的异步合并重扫调度器（单飞 + 去抖 + 锁忙重试）。 */
+    private final DuplicateCheckRefreshScheduler refreshScheduler;
+
     @Autowired
     public ShopDataDuplicateCheckScanService(ShopDataDuplicateScanMapper scanMapper,
                                              ShopDuplicateCheckSourceMapper sourceMapper,
@@ -86,6 +91,7 @@ public class ShopDataDuplicateCheckScanService {
         this.objectMapper = objectMapper;
         this.itemMapper = itemMapper;
         this.itemStoreService = itemStoreService;
+        this.refreshScheduler = new DuplicateCheckRefreshScheduler(this::runRefreshOnce);
     }
 
     /** 读侧视图：scanned_at 为最新 SUCCESS 行 created_at（yyyy-MM-dd HH:mm:ss）。 */
@@ -122,6 +128,30 @@ public class ShopDataDuplicateCheckScanService {
         }
     }
 
+    /** 采集明细落库后的重扫请求（端口实现）：异步合并执行，不阻塞、不抛错。 */
+    @Override
+    public void requestRefresh(String reason) {
+        refreshScheduler.request(reason);
+    }
+
+    /** 调度器单次扫描动作：锁被占返回 LOCK_BUSY 供其重试；失败只记日志（FAILED 行已落库）。 */
+    private DuplicateCheckRefreshScheduler.Outcome runRefreshOnce() {
+        try {
+            scanNow();
+            return DuplicateCheckRefreshScheduler.Outcome.DONE;
+        } catch (BusinessException ex) {
+            if (ex.getCode() != null && ex.getCode() == 409) {
+                log.info("[shop-duplicate-check] 自动重扫未执行：其它扫描进行中 msg={}", ex.getMessage());
+                return DuplicateCheckRefreshScheduler.Outcome.LOCK_BUSY;
+            }
+            log.warn("[shop-duplicate-check] 自动重扫失败 code={} msg={}", ex.getCode(), ex.getMessage());
+            return DuplicateCheckRefreshScheduler.Outcome.FAILED;
+        } catch (Exception ex) {
+            log.error("[shop-duplicate-check] 自动重扫异常", ex);
+            return DuplicateCheckRefreshScheduler.Outcome.FAILED;
+        }
+    }
+
     /** 最新 SUCCESS 扫描视图；无扫描结果返回 null。 */
     public DuplicateScanView loadLatest() {
         ScanLightRowDto light = scanMapper.selectLatestLightRow();

backend-java/src/main/java/com/nanri/aiimage/modules/shopduplicatecheck/service/support/DuplicateCheckRefreshScheduler.java

@@ -0,0 +1,138 @@
+package com.nanri.aiimage.modules.shopduplicatecheck.service.support;
+
+import com.nanri.aiimage.common.util.ThreadPools;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.Supplier;
+
+/**
+ * 采集落库触发的撞款重扫调度器：合并窗口去抖 + 单飞 + 锁忙重试。
+ *
+ * <p>语义：{@link #request} 只置位并异步执行，永不阻塞调用方、永不向外抛错；
+ * 合并窗口内的多次触发聚合为一次扫描；扫描动作执行期间到达的触发在下一轮执行；
+ * 扫描因分布式锁被占用未执行（{@link Outcome#LOCK_BUSY}）时按固定间隔重试有限次。
+ */
+@Slf4j
+public class DuplicateCheckRefreshScheduler {
+
+    /** 单次扫描动作的终态：完成 / 锁被占（可重试）/ 失败（不重试，等下次触发或定时扫描）。 */
+    public enum Outcome {
+        DONE, LOCK_BUSY, FAILED
+    }
+
+    private static final long DEFAULT_DEBOUNCE_MILLIS = 10_000L;
+    private static final long DEFAULT_LOCK_RETRY_MILLIS = 20_000L;
+    private static final int DEFAULT_MAX_LOCK_RETRIES = 6;
+
+    private final Supplier<Outcome> scanAction;
+    private final long debounceMillis;
+    private final long lockRetryMillis;
+    private final int maxLockRetries;
+    private final ExecutorService executor;
+    private final AtomicBoolean pending = new AtomicBoolean(false);
+    private final AtomicBoolean running = new AtomicBoolean(false);
+
+    public DuplicateCheckRefreshScheduler(Supplier<Outcome> scanAction) {
+        this(scanAction, DEFAULT_DEBOUNCE_MILLIS, DEFAULT_LOCK_RETRY_MILLIS, DEFAULT_MAX_LOCK_RETRIES);
+    }
+
+    /** 测试用：注入更短的窗口与重试参数。 */
+    DuplicateCheckRefreshScheduler(Supplier<Outcome> scanAction, long debounceMillis,
+                                   long lockRetryMillis, int maxLockRetries) {
+        this.scanAction = scanAction;
+        this.debounceMillis = Math.max(0L, debounceMillis);
+        this.lockRetryMillis = Math.max(0L, lockRetryMillis);
+        this.maxLockRetries = Math.max(0, maxLockRetries);
+        this.executor = ThreadPools.boundedFixed("shop-dup-refresh", 1, 8);
+    }
+
+    /** 请求一次重扫（异步、去抖合并）。调用方不被阻塞，也不会收到异常。 */
+    public void request(String reason) {
+        pending.set(true);
+        if (running.compareAndSet(false, true)) {
+            submit(reason);
+        }
+    }
+
+    private void submit(String reason) {
+        try {
+            log.info("[shop-duplicate-check] 触发撞款重扫（异步合并执行，窗口={}ms） reason={}", debounceMillis, reason);
+            executor.execute(this::drain);
+        } catch (Exception ex) {
+            // 提交失败（如线程池拒绝）时复位单飞标记，避免后续触发被永久吞掉
+            running.set(false);
+            log.warn("[shop-duplicate-check] 撞款重扫任务提交失败 reason={} msg={}", reason, ex.getMessage());
+        }
+    }
+
+    private void drain() {
+        try {
+            while (true) {
+                // 合并窗口：窗口内到达的多次触发聚合为同一轮扫描
+                if (!sleepQuietly(debounceMillis)) {
+                    return;
+                }
+                if (!pending.compareAndSet(true, false)) {
+                    return;
+                }
+                int lockRetries = 0;
+                while (true) {
+                    Outcome outcome = runOnceSafely();
+                    if (outcome != Outcome.LOCK_BUSY) {
+                        break;
+                    }
+                    if (lockRetries >= maxLockRetries) {
+                        log.warn("[shop-duplicate-check] 撞款重扫连续 {} 次未取得扫描锁，放弃本轮（等待下次触发或定时扫描）",
+                                lockRetries + 1);
+                        break;
+                    }
+                    lockRetries++;
+                    log.info("[shop-duplicate-check] 撞款重扫未取得扫描锁，{}ms 后重试（第 {}/{} 次）",
+                            lockRetryMillis, lockRetries, maxLockRetries);
+                    if (!sleepQuietly(lockRetryMillis)) {
+                        return;
+                    }
+                }
+            }
+        } finally {
+            running.set(false);
+            // 竞态兜底：running 复位前到达的触发可能没能提交，补一次
+            if (pending.get() && running.compareAndSet(false, true)) {
+                submit("race-guard");
+            }
+        }
+    }
+
+    /** 执行一次扫描动作；动作自身异常也被吸收（调度器对外零抛出）。 */
+    private Outcome runOnceSafely() {
+        long startedAt = System.currentTimeMillis();
+        try {
+            Outcome outcome = scanAction.get();
+            long elapsed = System.currentTimeMillis() - startedAt;
+            if (outcome == Outcome.DONE) {
+                log.info("[shop-duplicate-check] 采集后自动重扫完成 耗时={}ms", elapsed);
+            } else if (outcome == Outcome.FAILED) {
+                log.warn("[shop-duplicate-check] 采集后自动重扫失败 耗时={}ms", elapsed);
+            }
+            return outcome == null ? Outcome.FAILED : outcome;
+        } catch (Exception ex) {
+            log.error("[shop-duplicate-check] 采集后自动重扫异常", ex);
+            return Outcome.FAILED;
+        }
+    }
+
+    private static boolean sleepQuietly(long millis) {
+        if (millis <= 0) {
+            return true;
+        }
+        try {
+            Thread.sleep(millis);
+            return true;
+        } catch (InterruptedException ex) {
+            Thread.currentThread().interrupt();
+            return false;
+        }
+    }
+}

backend-java/src/main/java/com/nanri/aiimage/modules/similarasin/service/support/SimilarAsinChunkPayloadSupport.java

@@ -87,6 +87,15 @@ public class SimilarAsinChunkPayloadSupport {
                 recordChunkReadFailure(chunk, false, msg);
                 return rows;
             }
+            // payload 对象已不存在（RustFS 返回 NoSuchKey）：重试多少次都读不回来，跳过而不是
+            // 把组装/收尾永久拖死——与上面的 typeMismatch 分支、以及 collect-data 的降级口径一致。
+            // 线上 appearance-patent 28459 就因同类场景每 10~30 秒重试一次（见同批修复）。
+            if (msg.contains("does not exist")) {
+                log.warn("[similar-asin] chunk payload 已不存在，跳过该分片 taskId={} chunk={} err={}",
+                        chunk.getTaskId(), chunk.getChunkIndex(), msg);
+                recordChunkReadFailure(chunk, false, msg);
+                return rows;
+            }
             log.warn("[similar-asin] read chunk payload failed taskId={} chunk={} crossInstance={} err={}",
                     chunk.getTaskId(), chunk.getChunkIndex(), crossInstance, msg);
             recordChunkReadFailure(chunk, crossInstance, msg);

backend-java/src/main/java/com/nanri/aiimage/modules/similarasin/service/support/SimilarAsinPipelineSupport.java

@@ -214,6 +214,7 @@ public class SimilarAsinPipelineSupport {
             return;
         }
         int maxAttempts = 3;
+        String conflictDetail = "未发生冲突";
         for (int attempt = 1; attempt <= maxAttempts; attempt++) {
             TaskChunkEntity chunk = taskChunkMapper.selectOne(new LambdaQueryWrapper<TaskChunkEntity>()
                     .eq(TaskChunkEntity::getTaskId, taskId)
@@ -275,13 +276,35 @@ public class SimilarAsinPipelineSupport {
                 transientPayloadStorageService.deleteReplacedPayloadIfNeeded(oldPayload, storedPayload);
                 return;
             }
-            transientPayloadStorageService.deletePayloadIfPresent(storedPayload);
+            // CAS 冲突：读回行上的当前哈希，否则只有一句 conflict 无从判断是谁改的
+            String currentHash = currentPayloadHash(chunk.getId());
+            conflictDetail = "期望hash=" + oldPayloadHash + " 当前hash=" + currentHash;
             if (attempt < maxAttempts) {
-                log.warn("[similar-asin] chunk payload CAS conflict, retry merge taskId={} scopeHash={} chunk={} attempt={}/{}",
-                        taskId, scopeHash, chunkIndex, attempt, maxAttempts);
+                log.warn("[similar-asin] chunk payload CAS conflict, retry merge taskId={} scopeHash={} chunk={} attempt={}/{} 期望hash={} 当前hash={}",
+                        taskId, scopeHash, chunkIndex, attempt, maxAttempts, oldPayloadHash, currentHash);
+                // 还要重试：这次写的对象会被下次重写，先删掉避免堆积
+                transientPayloadStorageService.deletePayloadIfPresent(storedPayload);
+            } else {
+                // 终局失败：保留这次写入的版本化对象，作为读路径「同槽位兄弟对象」兜底的恢复源。
+                // 与外观专利同一口径——行没指过去不该让该分片永久判死。
+                log.error("[similar-asin] chunk payload 合并冲突重试耗尽，保留兜底对象 taskId={} scopeHash={} chunk={} 期望hash={} 当前hash={} 保留对象={}",
+                        taskId, scopeHash, chunkIndex, oldPayloadHash, currentHash, storedPayload);
             }
         }
-        throw new IllegalStateException("相似ASIN分片载荷更新失败");
+        throw new IllegalStateException("相似ASIN分片载荷更新失败 " + conflictDetail);
+    }
+
+    /** 读回 chunk 行当前的 payload_hash，用于 CAS 冲突定位（行已不存在/读取失败时返回可读标记）。 */
+    private String currentPayloadHash(Long chunkId) {
+        if (chunkId == null) {
+            return "chunkId 为空";
+        }
+        try {
+            TaskChunkEntity latest = taskChunkMapper.selectById(chunkId);
+            return latest == null ? "行已不存在" : latest.getPayloadHash();
+        } catch (Exception ex) {
+            return "读取失败:" + ex.getMessage();
+        }
     }
 
 

backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TaskFileJobService.java

@@ -643,6 +643,25 @@ public class TaskFileJobService {
                 .set(TaskFileJobEntity::getTerminalCallbackAt, LocalDateTime.now()));
     }
 
+    /**
+     * 该任务是否已有「重试耗尽且已走完终态回调」的组装 job。
+     *
+     * <p>用于卡死恢复（stale recovery）判断"再重建一次还有没有意义"：数据永久缺失时，
+     * 每轮重建只会再失败一次，而恢复过程又会刷新任务心跳，导致任务永远 RUNNING、
+     * 恢复每 30 秒空转一轮（线上任务 28459 实测）。
+     */
+    public boolean hasExhaustedAssembleJob(Long taskId, String moduleType) {
+        if (taskId == null || taskId <= 0 || moduleType == null || moduleType.isBlank()) {
+            return false;
+        }
+        return taskFileJobMapper.selectCount(new LambdaQueryWrapper<TaskFileJobEntity>()
+                .eq(TaskFileJobEntity::getTaskId, taskId)
+                .eq(TaskFileJobEntity::getModuleType, moduleType)
+                .eq(TaskFileJobEntity::getJobType, JOB_TYPE_ASSEMBLE_RESULT)
+                .ge(TaskFileJobEntity::getRetryCount, MAX_RETRY_COUNT)
+                .isNotNull(TaskFileJobEntity::getTerminalCallbackAt)) > 0;
+    }
+
     public TaskFileJobEntity findAssembleJob(Long taskId, String moduleType, Long resultId) {
         return findJob(taskId, moduleType, resultId, JOB_TYPE_ASSEMBLE_RESULT);
     }

backend-java/src/main/java/com/nanri/aiimage/modules/task/service/TransientPayloadStorageService.java

@@ -30,6 +30,7 @@ import java.util.Locale;
 import java.util.Objects;
 import java.util.Set;
 import java.util.UUID;
+import java.util.regex.Pattern;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.GZIPOutputStream;
 
@@ -150,8 +151,20 @@ public class TransientPayloadStorageService {
                 return decodeStoredPayloadBytes(readLocalPayloadBytes(stripLocalInstanceId(localKey)));
             }
             if (pointer.startsWith(RUSTFS_POINTER_PREFIX)) {
-                return decodeStoredPayloadBytes(
-                        rustfsObjectStorageService.readObjectBytes(pointer.substring(RUSTFS_POINTER_PREFIX.length())));
+                String objectKey = pointer.substring(RUSTFS_POINTER_PREFIX.length());
+                try {
+                    return decodeStoredPayloadBytes(rustfsObjectStorageService.readObjectBytes(objectKey));
+                } catch (RuntimeException readException) {
+                    String sibling = findVersionedChunkSibling(objectKey, readException);
+                    if (sibling == null) {
+                        throw readException;
+                    }
+                    // 2026-09-17 线上任务 28459：行指向的普通 key 被误删，但同一分片槽位的版本化对象还在。
+                    // 读出它即可让任务按已有数据出结果，不必整单失败。
+                    log.warn("[transient-payload] chunk 载荷对象不存在，回退同槽位版本化对象 pointer={} sibling={}",
+                            pointer, sibling);
+                    return decodeStoredPayloadBytes(rustfsObjectStorageService.readObjectBytes(sibling));
+                }
             }
             if (pointer.startsWith(OSS_POINTER_PREFIX)) {
                 return decodeStoredPayloadBytes(
@@ -164,6 +177,53 @@ public class TransientPayloadStorageService {
         return value;
     }
 
+    /** chunk 载荷槽位的 entryKey 形态：{@code chunk-<index>}（版本化写入则形如 {@code chunk-<index>-<uuid>}）。 */
+    private static final Pattern CHUNK_ENTRY_KEY_PATTERN = Pattern.compile("chunk-\\d+");
+
+    /** 兄弟对象查找上限：只为找回同槽位对象，不需要列全。 */
+    private static final int MAX_SIBLING_LOOKUP_KEYS = 50;
+
+    /**
+     * 指针对象已不存在时，尝试找回同一分片槽位的版本化兄弟对象。
+     *
+     * <p>两个条件同时满足才兜底，避免读到无关对象或掩盖真实故障：
+     * <ol>
+     *   <li>末段 entryKey 是 {@code chunk-<index>} 形态——只有这种槽位才有「版本化兄弟」语义；</li>
+     *   <li>失败原因是对象确实不存在（NoSuchKey）——权限/网络类失败照旧上抛以便重试。</li>
+     * </ol>
+     */
+    private String findVersionedChunkSibling(String objectKey, Throwable cause) {
+        if (!isObjectMissing(cause)) {
+            return null;
+        }
+        int slash = objectKey.lastIndexOf('/');
+        String directory = slash < 0 ? "" : objectKey.substring(0, slash + 1);
+        String fileName = slash < 0 ? objectKey : objectKey.substring(slash + 1);
+        if (!fileName.endsWith(".json")) {
+            return null;
+        }
+        String entryKey = fileName.substring(0, fileName.length() - ".json".length());
+        if (!CHUNK_ENTRY_KEY_PATTERN.matcher(entryKey).matches()) {
+            return null;
+        }
+        List<String> candidates = rustfsObjectStorageService.listObjectKeysNewestFirst(
+                directory + entryKey + "-", MAX_SIBLING_LOOKUP_KEYS);
+        return candidates.isEmpty() ? null : candidates.getFirst();
+    }
+
+    /** 对象确已不存在：RustFS 返回 NoSuchKey，message 为 "The specified key does not exist."。 */
+    private static boolean isObjectMissing(Throwable error) {
+        Throwable cursor = error;
+        while (cursor != null) {
+            String message = cursor.getMessage();
+            if (message != null && message.contains("does not exist")) {
+                return true;
+            }
+            cursor = cursor.getCause();
+        }
+        return false;
+    }
+
     public void deletePayloadIfPresent(String value) {
         String pointer = extractPointer(value);
         if (pointer == null) {
@@ -209,8 +269,10 @@ public class TransientPayloadStorageService {
      *
      * <p>判断口径：
      * <ul>
-     *   <li>{@code biz_task_chunk.payload_json} 命中 &gt; 1 行（&gt; 1 表示除了 caller 视角下
-     *       自己即将释放的那一行之外，至少还有别的 chunk 行也指向同一对象）→ 视为仍被引用。</li>
+     *   <li>{@code biz_task_chunk.payload_json} 命中任意行（&ge; 1）→ 视为仍被引用。
+     *       曾用 {@code > 1} 作判据，等于放行「恰好还有 1 行引用」的情况，会把对方仍在用的对象
+     *       删掉（2026-09-17 线上任务 28459：合并成功后指针未落库 + 旧对象被删 → 该分片永久读不到）。
+     *       物理删除本就约定在 DB 行删除之后执行，故调用方正常路径下引用数必然为 0。</li>
      *   <li>{@code biz_task_scope_state.parsed_payload_json}/{@code state_json} 命中 &gt; 0 行 →
      *       视为仍被引用（这两个字段不是 caller 自身行的常见持有者，命中即非自我引用）。</li>
      * </ul>
@@ -248,7 +310,7 @@ public class TransientPayloadStorageService {
             // 解析不出 taskId 时按原口径全局查，行为与改造前一致。
             Long pointerTaskId = extractTaskId(pointer);
             Long chunkCount = referencedChunkCount(pointerTaskId, values);
-            if (chunkCount != null && chunkCount > 1L) {
+            if (chunkCount != null && chunkCount > 0L) {
                 return true;
             }
             Long scopeStateCount = referencedScopeStateCount(pointerTaskId, values);

backend-java/src/test/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentChunkMergeConflictTest.java

@@ -0,0 +1,218 @@
+package com.nanri.aiimage.modules.appearancepatent.service;
+
+import com.baomidou.mybatisplus.core.MybatisConfiguration;
+import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.nanri.aiimage.common.service.DistributedJobLockService;
+import com.nanri.aiimage.config.AppearancePatentProperties;
+import com.nanri.aiimage.config.InstanceMetadata;
+import com.nanri.aiimage.config.StorageProperties;
+import com.nanri.aiimage.modules.appearancepatent.client.AppearancePatentLlmClient;
+import com.nanri.aiimage.modules.appearancepatent.model.dto.AppearancePatentResultRowDto;
+import com.nanri.aiimage.modules.file.service.LocalFileStorageService;
+import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
+import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
+import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskScopeStateMapper;
+import com.nanri.aiimage.modules.task.model.entity.FileResultEntity;
+import com.nanri.aiimage.modules.task.model.entity.FileTaskEntity;
+import com.nanri.aiimage.modules.task.model.entity.TaskChunkEntity;
+import com.nanri.aiimage.modules.task.model.entity.TaskScopeStateEntity;
+import com.nanri.aiimage.modules.task.service.TaskDistributedLockService;
+import com.nanri.aiimage.modules.task.service.TaskFileJobService;
+import com.nanri.aiimage.modules.task.service.TaskProgressLightAssembler;
+import com.nanri.aiimage.modules.task.service.TaskProgressSnapshotService;
+import com.nanri.aiimage.modules.task.service.TransientPayloadStorageService;
+import org.apache.ibatis.builder.MapperBuilderAssistant;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Spy;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.test.util.ReflectionTestUtils;
+import org.springframework.transaction.PlatformTransactionManager;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.lenient;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * 外观专利分片载荷合并的 CAS 冲突处理（2026-09-17 线上任务 28459 的遗留项）。
+ *
+ * <p>原实现在每次 CAS 冲突后都删掉刚写入的版本化对象，重试耗尽即抛异常、行仍指向旧指针——
+ * 一旦旧对象也不在，该分片就永久读不到（28459 的 chunk-462/473/484 正是这个形态）。
+ * 现在：冲突时读回行上的当前哈希以便定位；**终局失败保留最后一个兜底对象**，
+ * 让读路径的「同槽位兄弟对象」兜底仍有数据可取。
+ */
+@ExtendWith(MockitoExtension.class)
+class AppearancePatentChunkMergeConflictTest {
+
+    private static final Long TASK_ID = 28459L;
+    private static final String SCOPE_HASH = "2248d39710545b47b7c7035fc60c4e33924a16174abf65dd1c5a230918e6f61e";
+    private static final int CHUNK_INDEX = 462;
+
+    @Mock private LocalFileStorageService localFileStorageService;
+    @Mock private OssStorageService ossStorageService;
+    @Mock private StorageProperties storageProperties;
+    @Mock private FileTaskMapper fileTaskMapper;
+    @Mock private FileResultMapper fileResultMapper;
+    @Mock private TaskScopeStateMapper taskScopeStateMapper;
+    @Mock private TaskChunkMapper taskChunkMapper;
+    @Spy private ObjectMapper objectMapper = new ObjectMapper();
+    @Mock private AppearancePatentLlmClient llmClient;
+    @Mock private AppearancePatentTaskCacheService taskCacheService;
+    @Mock private AppearancePatentProperties properties;
+    @Mock private TaskFileJobService taskFileJobService;
+    @Mock private TaskProgressSnapshotService taskProgressSnapshotService;
+    @Mock private TransientPayloadStorageService transientPayloadStorageService;
+    @Mock private PlatformTransactionManager transactionManager;
+    @Mock private DistributedJobLockService distributedJobLockService;
+    @Mock private TaskDistributedLockService taskDistributedLockService;
+    @Mock private InstanceMetadata instanceMetadata;
+    @Mock private TaskProgressLightAssembler taskProgressLightAssembler;
+
+    @InjectMocks private AppearancePatentTaskService service;
+
+    @BeforeAll
+    static void initializeMybatisMetadata() {
+        MapperBuilderAssistant assistant = new MapperBuilderAssistant(new MybatisConfiguration(), "");
+        TableInfoHelper.initTableInfo(assistant, FileTaskEntity.class);
+        TableInfoHelper.initTableInfo(assistant, FileResultEntity.class);
+        TableInfoHelper.initTableInfo(assistant, TaskChunkEntity.class);
+        TableInfoHelper.initTableInfo(assistant, TaskScopeStateEntity.class);
+    }
+
+    @BeforeEach
+    void setUp() {
+        lenient().when(instanceMetadata.getInstanceId()).thenReturn("instance-a");
+        // 共享写开启才会走版本化对象存储；否则落到本地兜底路径直接报「RustFS 未配置」
+        lenient().when(transientPayloadStorageService.isSharedWriteEnabled()).thenReturn(true);
+    }
+
+    /** 首次冲突后重试成功：中间那次写的对象要删（会被下次重写），且最终行被改到新对象。 */
+    @Test
+    void retryAfterConflictDeletesSupersededObject() {
+        stubChunk("hash-old", "ptr-chunk-462.json");
+        AtomicInteger stores = new AtomicInteger();
+        stubVersionedStore(stores);
+        when(taskChunkMapper.update(any(), any())).thenReturn(0, 1);
+        when(taskChunkMapper.selectById(anyLong())).thenReturn(chunk("hash-other", "ptr-chunk-462.json"));
+
+        invokeMerge();
+
+        verify(transientPayloadStorageService, times(2)).storeChunkPayloadVersioned(anyString(), any(), anyString(), any(), anyString());
+        // 第 1 次冲突写的对象被删；第 2 次成功，走的是「替换旧对象」而不是删新对象
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-1");
+        verify(transientPayloadStorageService, never()).deletePayloadIfPresent("sibling-2");
+        verify(transientPayloadStorageService).deleteReplacedPayloadIfNeeded(eq("ptr-chunk-462.json"), eq("sibling-2"));
+    }
+
+    /** 冲突重试耗尽：**保留**最后一次写入的兜底对象（本次要修的形态），并抛异常带出两个哈希。 */
+    @Test
+    void exhaustedConflictKeepsLastStoredObjectAsFallback() {
+        stubChunk("hash-old", "ptr-chunk-462.json");
+        AtomicInteger stores = new AtomicInteger();
+        stubVersionedStore(stores);
+        when(taskChunkMapper.update(any(), any())).thenReturn(0);
+        when(taskChunkMapper.selectById(anyLong())).thenReturn(chunk("hash-other", "ptr-chunk-462.json"));
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class, this::invokeMerge);
+
+        verify(transientPayloadStorageService, times(3)).storeChunkPayloadVersioned(anyString(), any(), anyString(), any(), anyString());
+        // 前两次冲突的对象照旧删除；第三次（终局）的对象必须保留
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-1");
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-2");
+        verify(transientPayloadStorageService, never()).deletePayloadIfPresent("sibling-3");
+        assertTrue(ex.getMessage().contains("hash-old"), "异常需带出期望哈希，实际: " + ex.getMessage());
+        assertTrue(ex.getMessage().contains("hash-other"), "异常需带出当前哈希，实际: " + ex.getMessage());
+    }
+
+    /** 冲突时读回行上的当前哈希，供定位（此前只有一句 update conflict，线上无法定位）。 */
+    @Test
+    void conflictReadsBackCurrentHashForDiagnostics() {
+        stubChunk("hash-old", "ptr-chunk-462.json");
+        stubVersionedStore(new AtomicInteger());
+        when(taskChunkMapper.update(any(), any())).thenReturn(0);
+        when(taskChunkMapper.selectById(7L)).thenReturn(chunk("hash-changed-by-other-writer", "ptr-chunk-462.json"));
+
+        assertThrows(IllegalStateException.class, this::invokeMerge);
+
+        verify(taskChunkMapper, times(3)).selectById(7L);
+    }
+
+    /** 读回行失败不得掩盖原始冲突：异常信息里给出可读标记。 */
+    @Test
+    void readBackFailureDoesNotMaskConflict() {
+        stubChunk("hash-old", "ptr-chunk-462.json");
+        stubVersionedStore(new AtomicInteger());
+        when(taskChunkMapper.update(any(), any())).thenReturn(0);
+        when(taskChunkMapper.selectById(anyLong())).thenThrow(new IllegalStateException("db down"));
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class, this::invokeMerge);
+
+        assertTrue(ex.getMessage().contains("读取失败"), "实际: " + ex.getMessage());
+    }
+
+    // ===== 辅助 =====
+
+    private void invokeMerge() {
+        AppearancePatentResultRowDto row = new AppearancePatentResultRowDto();
+        row.setRowToken("r1");
+        row.setAsin("B0A0000001");
+        ReflectionTestUtils.invokeMethod(service, "mergeChunkPayload", TASK_ID, SCOPE_HASH, CHUNK_INDEX, List.of(row));
+    }
+
+    private void stubChunk(String payloadHash, String payloadPointer) {
+        when(taskChunkMapper.selectOne(any())).thenReturn(chunk(payloadHash, payloadPointer));
+        lenient().when(transientPayloadStorageService.resolvePayload(eq(payloadPointer), anyString()))
+                .thenReturn("[{\"rowToken\":\"r1\",\"asin\":\"B0A0000001\"}]");
+    }
+
+    private void stubVersionedStore(AtomicInteger stores) {
+        lenient().when(transientPayloadStorageService.storeChunkPayloadVersioned(
+                        anyString(), anyLong(), anyString(), any(), anyString()))
+                .thenAnswer(inv -> "sibling-" + stores.incrementAndGet());
+    }
+
+    private TaskChunkEntity chunk(String payloadHash, String payloadPointer) {
+        TaskChunkEntity chunk = new TaskChunkEntity();
+        chunk.setId(7L);
+        chunk.setTaskId(TASK_ID);
+        chunk.setModuleType(AppearancePatentTaskService.MODULE_TYPE);
+        chunk.setScopeHash(SCOPE_HASH);
+        chunk.setChunkIndex(CHUNK_INDEX);
+        chunk.setPayloadJson(payloadPointer);
+        chunk.setPayloadHash(payloadHash);
+        return chunk;
+    }
+
+    /** 断言辅助：确认存的对象数（避免误用未使用的 import）。 */
+    @Test
+    void storeIsCalledOnceWhenUpdateSucceeds() {
+        stubChunk("hash-old", "ptr-chunk-462.json");
+        AtomicInteger stores = new AtomicInteger();
+        stubVersionedStore(stores);
+        when(taskChunkMapper.update(any(), any())).thenReturn(1);
+
+        invokeMerge();
+
+        assertEquals(1, stores.get());
+        verify(taskChunkMapper, never()).selectById(anyLong());
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/appearancepatent/service/AppearancePatentTerminalFailedRecoveryTest.java

@@ -0,0 +1,243 @@
+package com.nanri.aiimage.modules.appearancepatent.service;
+
+import com.baomidou.mybatisplus.core.MybatisConfiguration;
+import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.nanri.aiimage.common.service.DistributedJobLockService;
+import com.nanri.aiimage.config.AppearancePatentProperties;
+import com.nanri.aiimage.config.InstanceMetadata;
+import com.nanri.aiimage.config.StorageProperties;
+import com.nanri.aiimage.modules.appearancepatent.client.AppearancePatentLlmClient;
+import com.nanri.aiimage.modules.appearancepatent.model.dto.AppearancePatentSubmitResultRequest;
+import com.nanri.aiimage.modules.file.service.LocalFileStorageService;
+import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
+import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
+import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskScopeStateMapper;
+import com.nanri.aiimage.modules.task.model.entity.FileResultEntity;
+import com.nanri.aiimage.modules.task.model.entity.FileTaskEntity;
+import com.nanri.aiimage.modules.task.model.entity.TaskChunkEntity;
+import com.nanri.aiimage.modules.task.model.entity.TaskScopeStateEntity;
+import com.nanri.aiimage.modules.task.service.TaskDistributedLockService;
+import com.nanri.aiimage.modules.task.service.TaskFileJobService;
+import com.nanri.aiimage.modules.task.service.TaskProgressLightAssembler;
+import com.nanri.aiimage.modules.task.service.TaskProgressSnapshotService;
+import com.nanri.aiimage.modules.task.service.TransientPayloadStorageService;
+import org.apache.ibatis.builder.MapperBuilderAssistant;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Spy;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.test.util.ReflectionTestUtils;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.TransactionDefinition;
+import org.springframework.transaction.TransactionStatus;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.lenient;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * 外观专利「补传恢复」入口（2026-09-17 线上任务 28459 的遗留项）。
+ *
+ * <p>分片缺失导致组装 job 重试耗尽后，客户端补传缺口应能自动把该 job 重置重跑。
+ * 该能力在 {@code TaskFileJobService} 里早就有了，但只有删除品牌模块接了入口，
+ * 外观专利没有——28459 补齐分片后仍需人工重置 job 才能出结果。
+ */
+@ExtendWith(MockitoExtension.class)
+class AppearancePatentTerminalFailedRecoveryTest {
+
+    private static final Long TASK_ID = 28459L;
+    private static final Long RESULT_ID = 31490L;
+    private static final String MODULE_TYPE = "APPEARANCE_PATENT";
+
+    @Mock private LocalFileStorageService localFileStorageService;
+    @Mock private OssStorageService ossStorageService;
+    @Mock private StorageProperties storageProperties;
+    @Mock private FileTaskMapper fileTaskMapper;
+    @Mock private FileResultMapper fileResultMapper;
+    @Mock private TaskScopeStateMapper taskScopeStateMapper;
+    @Mock private TaskChunkMapper taskChunkMapper;
+    @Spy private ObjectMapper objectMapper = new ObjectMapper();
+    @Mock private AppearancePatentLlmClient llmClient;
+    @Mock private AppearancePatentTaskCacheService taskCacheService;
+    @Mock private AppearancePatentProperties properties;
+    @Mock private TaskFileJobService taskFileJobService;
+    @Mock private TaskProgressSnapshotService taskProgressSnapshotService;
+    @Mock private TransientPayloadStorageService transientPayloadStorageService;
+    @Mock private PlatformTransactionManager transactionManager;
+    @Mock private DistributedJobLockService distributedJobLockService;
+    @Mock private TaskDistributedLockService taskDistributedLockService;
+    @Mock private InstanceMetadata instanceMetadata;
+    @Mock private TaskProgressLightAssembler taskProgressLightAssembler;
+    @Mock private TransactionStatus transactionStatus;
+
+    @InjectMocks private AppearancePatentTaskService service;
+
+    @BeforeAll
+    static void initializeMybatisMetadata() {
+        MapperBuilderAssistant assistant = new MapperBuilderAssistant(new MybatisConfiguration(), "");
+        TableInfoHelper.initTableInfo(assistant, FileTaskEntity.class);
+        TableInfoHelper.initTableInfo(assistant, FileResultEntity.class);
+        TableInfoHelper.initTableInfo(assistant, TaskChunkEntity.class);
+        TableInfoHelper.initTableInfo(assistant, TaskScopeStateEntity.class);
+    }
+
+    @BeforeEach
+    void setUp() {
+        lenient().when(instanceMetadata.getInstanceId()).thenReturn("instance-a");
+        lenient().when(transactionManager.getTransaction(any(TransactionDefinition.class))).thenReturn(transactionStatus);
+        lenient().doAnswer(inv -> null).when(transactionManager).commit(transactionStatus);
+        lenient().doAnswer(inv -> null).when(transactionManager).rollback(transactionStatus);
+        lenient().when(taskChunkMapper.selectList(any())).thenReturn(List.of());
+        lenient().when(taskChunkMapper.selectCount(any())).thenReturn(0L);
+        lenient().when(taskChunkMapper.selectOne(any())).thenReturn(null);
+        lenient().when(taskScopeStateMapper.selectOne(any())).thenReturn(null);
+        lenient().when(fileTaskMapper.updateById(any(FileTaskEntity.class))).thenReturn(1);
+        lenient().when(transientPayloadStorageService.isSharedWriteEnabled()).thenReturn(true);
+        lenient().when(transientPayloadStorageService.storeChunkPayload(
+                        eq(MODULE_TYPE), eq(TASK_ID), anyString(), any(), anyString()))
+                .thenReturn("\"rustfs:task-chunk/appearance_patent/28459/hash/chunk-11.json\"");
+    }
+
+    // ===== 直接覆盖恢复判定 =====
+
+    /** 已有成功的组装 job → 不恢复。 */
+    @Test
+    void successfulAssembleJobSkipsRecovery() {
+        stubResultRow();
+        when(taskFileJobService.hasSuccessfulAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(true);
+
+        invokeRecovery();
+
+        verify(taskFileJobService, never()).resetTerminalFailedForRecovery(anyLong(), anyString(), anyLong());
+    }
+
+    /** 组装 job 不是「重试耗尽的终态失败」→ 不恢复。 */
+    @Test
+    void nonTerminalFailedJobSkipsRecovery() {
+        stubResultRow();
+        when(taskFileJobService.hasSuccessfulAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(false);
+        when(taskFileJobService.isTerminalFailedAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(false);
+
+        invokeRecovery();
+
+        verify(taskFileJobService, never()).resetTerminalFailedForRecovery(anyLong(), anyString(), anyLong());
+    }
+
+    /** 终态失败 + 分片已补传完整 → 重置 job 重新派发（本次要修的场景）。 */
+    @Test
+    void terminalFailedJobWithCompleteChunksIsReset() {
+        stubResultRow();
+        when(taskFileJobService.hasSuccessfulAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(false);
+        when(taskFileJobService.isTerminalFailedAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(true);
+        when(taskScopeStateMapper.selectCount(any())).thenReturn(1L);
+
+        invokeRecovery();
+
+        verify(taskFileJobService).resetTerminalFailedForRecovery(TASK_ID, MODULE_TYPE, RESULT_ID);
+    }
+
+    /** 终态失败但分片尚未补齐 → 不恢复（否则又会读到缺失分片再失败一次）。 */
+    @Test
+    void terminalFailedJobWithIncompleteChunksIsNotReset() {
+        stubResultRow();
+        when(taskFileJobService.hasSuccessfulAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(false);
+        when(taskFileJobService.isTerminalFailedAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(true);
+        when(taskScopeStateMapper.selectCount(any())).thenReturn(0L);
+
+        invokeRecovery();
+
+        verify(taskFileJobService, never()).resetTerminalFailedForRecovery(anyLong(), anyString(), anyLong());
+    }
+
+    /** 还没有结果行 → 不恢复。 */
+    @Test
+    void missingResultRowSkipsRecovery() {
+        when(fileResultMapper.selectList(any())).thenReturn(List.of());
+
+        invokeRecovery();
+
+        verify(taskFileJobService, never()).isTerminalFailedAssembleJob(anyLong(), anyString(), anyLong());
+    }
+
+    /** taskId 非法 → 直接返回，不查库。 */
+    @Test
+    void invalidTaskIdSkipsLookup() {
+        ReflectionTestUtils.invokeMethod(service, "maybeRecoverTerminalFailedAssemble", 0L);
+        ReflectionTestUtils.invokeMethod(service, "maybeRecoverTerminalFailedAssemble", (Object) null);
+
+        verify(fileResultMapper, never()).selectList(any());
+    }
+
+    /** 恢复检查自身抛异常 → 吞掉，不影响补传结果（best-effort）。 */
+    @Test
+    void recoveryFailureDoesNotPropagate() {
+        when(fileResultMapper.selectList(any())).thenThrow(new IllegalStateException("db down"));
+
+        assertDoesNotThrow(this::invokeRecovery);
+    }
+
+    // ===== 走完整提交路径 =====
+
+    /** 分片提交成功后触发恢复检查（接线正确）。 */
+    @Test
+    void submitResultTriggersRecoveryCheck() {
+        stubRunningTask();
+        stubResultRow();
+        when(taskFileJobService.hasSuccessfulAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(false);
+        when(taskFileJobService.isTerminalFailedAssembleJob(TASK_ID, MODULE_TYPE, RESULT_ID)).thenReturn(true);
+        when(taskScopeStateMapper.selectCount(any())).thenReturn(1L);
+
+        service.submitResult(TASK_ID, request());
+
+        verify(taskFileJobService).resetTerminalFailedForRecovery(TASK_ID, MODULE_TYPE, RESULT_ID);
+    }
+
+    // ===== 辅助 =====
+
+    private void invokeRecovery() {
+        ReflectionTestUtils.invokeMethod(service, "maybeRecoverTerminalFailedAssemble", TASK_ID);
+    }
+
+    private void stubResultRow() {
+        FileResultEntity result = new FileResultEntity();
+        result.setId(RESULT_ID);
+        result.setTaskId(TASK_ID);
+        result.setModuleType(MODULE_TYPE);
+        lenient().when(fileResultMapper.selectList(any())).thenReturn(List.of(result));
+    }
+
+    private void stubRunningTask() {
+        FileTaskEntity task = new FileTaskEntity();
+        task.setId(TASK_ID);
+        task.setModuleType(MODULE_TYPE);
+        task.setStatus("RUNNING");
+        task.setUserId(1121L);
+        task.setResultJson("{\"parsedPayloadRef\":\"rustfs:task-parsed/x.json\",\"ownerInstanceId\":\"instance-a\"}");
+        when(fileTaskMapper.selectById(TASK_ID)).thenReturn(task);
+    }
+
+    private AppearancePatentSubmitResultRequest request() {
+        AppearancePatentSubmitResultRequest request = new AppearancePatentSubmitResultRequest();
+        request.setSubmissionId("appearance-patent-" + TASK_ID);
+        request.setChunkIndex(11);
+        request.setChunkTotal(500);
+        request.setDone(false);
+        return request;
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/file/service/object/RustfsObjectStorageServiceTest.java

@@ -297,16 +297,19 @@ class RustfsObjectStorageServiceTest {
         RustfsObjectStorageService service = new RustfsObjectStorageService(
                 properties, emptyProvider(), provider(retryService), () -> client);
 
+        // 补偿删除只对版本化 key（本次写入独占）生效，故这里用 versioned key 覆盖该路径
+        String firstKey = "task/a-11111111-2222-3333-4444-555555555555.json";
+        String secondKey = "task/b-66666666-7777-8888-9999-000000000000.json";
         IllegalStateException firstFailure = assertThrows(IllegalStateException.class,
-                () -> service.uploadText("task/a.json", "{}", true));
+                () -> service.uploadText(firstKey, "{}", true));
         IllegalStateException secondFailure = assertThrows(IllegalStateException.class,
-                () -> service.uploadText("task/b.json", "{}", true));
+                () -> service.uploadText(secondKey, "{}", true));
 
         assertTrue(firstFailure.getMessage().contains("not visible"));
         assertTrue(secondFailure.getMessage().contains("not visible"));
         verify(client, times(5)).statObject(any(StatObjectArgs.class));
-        verify(retryService).enqueue(eq("task/a.json"), same(firstFailure));
-        verify(retryService).enqueue(eq("task/b.json"), same(secondFailure));
+        verify(retryService).enqueue(eq(firstKey), same(firstFailure));
+        verify(retryService).enqueue(eq(secondKey), same(secondFailure));
         IllegalStateException rejected = assertThrows(IllegalStateException.class,
                 () -> service.uploadText("task/c.json", "{}", false));
         assertTrue(rejected.getMessage().contains("cooldown active"));
@@ -360,6 +363,9 @@ class RustfsObjectStorageServiceTest {
 
     @Test
     void completedUploadIsEnqueuedWhenDeadlineExpiresAfterPut() throws Exception {
+        // 只有版本化 key（本次写入独占）才允许补偿删除；共享 key 的守卫见
+        // RustfsUploadCompensationGuardTest#deterministicKeyDerivedFromShapeDoesNotEnqueueCompensation
+        String versionedKey = "task/chunk-1-0ffc254b-afad-4279-aab2-e85e3ff955e9.json";
         TransientStorageProperties properties = configuredProperties();
         properties.setOperationTimeoutSeconds(1);
         RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
@@ -372,11 +378,11 @@ class RustfsObjectStorageServiceTest {
                 properties, emptyProvider(), provider(retryService), () -> client);
 
         IllegalStateException failure = assertThrows(IllegalStateException.class,
-                () -> service.uploadText("task/a.json", "{}", false));
+                () -> service.uploadText(versionedKey, "{}", false));
 
         assertTrue(failure.getMessage().contains("operation timeout"));
         verify(client).putObject(any(PutObjectArgs.class));
-        verify(retryService).enqueue(eq("task/a.json"), same(failure));
+        verify(retryService).enqueue(eq(versionedKey), same(failure));
     }
 
     private static TransientStorageProperties configuredProperties() {

backend-java/src/test/java/com/nanri/aiimage/modules/file/service/object/RustfsUploadCompensationGuardTest.java

@@ -0,0 +1,217 @@
+package com.nanri.aiimage.modules.file.service.object;
+
+import com.nanri.aiimage.config.TransientStorageProperties;
+import io.minio.MinioClient;
+import io.minio.PutObjectArgs;
+import io.minio.StatObjectArgs;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.ObjectProvider;
+
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * 上传失败补偿删除的准入守卫（2026-09-17 线上任务 28459 事故）。
+ *
+ * <p>事故形态：客户端重传复用**确定性 key**（{@code chunk-462.json}）。第一次上传 put 已成功、
+ * 但随后的 {@code verifyObjectVisible} 抖动 → 旧代码无条件
+ * {@code enqueueDeleteRetry(objectKey)}；而删除重试队列对该 key 不再做任何引用校验
+ * （{@code RustfsDeleteRetryService} → {@code deleteObjectFromRetry} → {@code removeObject}），
+ * 于是把重传成功后 DB 行仍指向的对象删掉，下游读 chunk 直接 404，整个任务组装失败。
+ *
+ * <p>口径：只有**本次写入独占的对象**（版本化 key，末段以 UUID 结尾）才允许补偿删除；
+ * 确定性 key 会被重写复用，删它就可能删掉别的行正在引用的对象。
+ */
+class RustfsUploadCompensationGuardTest {
+
+    // ===== 正常路径 =====
+
+    /** 唯一 key（版本化）+ 验证失败 + 显式允许 → 补偿删除入队。 */
+    @Test
+    void uniqueKeyVerifyFailureEnqueuesCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        assertThrows(IllegalStateException.class,
+                () -> service.uploadBytes("task/chunk-462-0ffc254b-afad-4279-aab2-e85e3ff955e9.json",
+                        "{}".getBytes(), true, true));
+
+        verify(retryService).enqueue(eq("task/chunk-462-0ffc254b-afad-4279-aab2-e85e3ff955e9.json"),
+                any(Throwable.class));
+    }
+
+    /** 三参重载按 key 形态判定：版本化 key 自动允许补偿删除。 */
+    @Test
+    void versionedKeyDerivedFromShapeEnqueuesCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        assertThrows(IllegalStateException.class,
+                () -> service.uploadBytes("task/chunk-77-d03bf3b0-abbb-469d-9bb8-a7c01c309477.json",
+                        "{}".getBytes(), true));
+
+        verify(retryService).enqueue(anyString(), any(Throwable.class));
+    }
+
+    // ===== 事故根因：共享 key 必须不删 =====
+
+    /** 确定性（共享）key + 显式禁止 → 不入队（异常仍照旧抛出，失败归属不变）。 */
+    @Test
+    void sharedKeyVerifyFailureDoesNotEnqueueCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        assertThrows(IllegalStateException.class,
+                () -> service.uploadBytes("task/chunk-462.json", "{}".getBytes(), true, false));
+
+        verify(retryService, never()).enqueue(anyString(), any(Throwable.class));
+    }
+
+    /** 三参重载按 key 形态判定：确定性 key 自动禁止补偿删除（本次事故的直接修复点）。 */
+    @Test
+    void deterministicKeyDerivedFromShapeDoesNotEnqueueCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        assertThrows(IllegalStateException.class,
+                () -> service.uploadBytes("task/chunk-462.json", "{}".getBytes(), true));
+
+        verify(retryService, never()).enqueue(anyString(), any(Throwable.class));
+    }
+
+    /** verify=false 上传即成功，不得产生任何补偿删除。 */
+    @Test
+    void verifyDisabledNeverEnqueuesCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        String key = service.uploadBytes("task/chunk-462-uuid-x.json", "{}".getBytes(), false, true);
+
+        assertEquals("task/chunk-462-uuid-x.json", key);
+        verify(retryService, never()).enqueue(anyString(), any(Throwable.class));
+    }
+
+    // ===== 异常路径 =====
+
+    /** put 从未成功过：对象本就不存在，不该产生删除动作（与开关无关）。 */
+    @Test
+    void putNeverCompletedDoesNotEnqueueCompensation() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        MinioClient client = mock(MinioClient.class);
+        when(client.putObject(any(PutObjectArgs.class))).thenThrow(new IOException("put failed"));
+        TransientStorageProperties properties = configuredProperties();
+        properties.setUploadMaxRetries(1);
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                properties, emptyProvider(), provider(retryService), () -> client);
+
+        assertThrows(RuntimeException.class,
+                () -> service.uploadBytes("task/chunk-462-uuid-x.json", "{}".getBytes(), true, true));
+
+        verify(retryService, never()).enqueue(anyString(), any(Throwable.class));
+    }
+
+    /** 补偿删除入队本身失败：不得把上传失败改写成入队异常，原异常必须继续上抛。 */
+    @Test
+    void enqueueFailureDoesNotMaskUploadFailure() throws Exception {
+        RustfsDeleteRetryService retryService = mock(RustfsDeleteRetryService.class);
+        org.mockito.Mockito.doThrow(new IllegalStateException("queue down"))
+                .when(retryService).enqueue(anyString(), any(Throwable.class));
+        RustfsObjectStorageService service = new RustfsObjectStorageService(
+                configuredProperties(), emptyProvider(), provider(retryService), RustfsUploadCompensationGuardTest::putOkButStatFails);
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class,
+                () -> service.uploadBytes("task/chunk-9-11111111-2222-3333-4444-555555555555.json",
+                        "{}".getBytes(), true, true));
+
+        assertFalse(ex.getMessage() == null || ex.getMessage().contains("queue down"),
+                "入队异常不应成为对外错误；实际=" + ex.getMessage());
+    }
+
+    // ===== key 形态判定的边界 =====
+
+    @Test
+    void versionedKeyShapeIsRecognized() {
+        assertTrue(RustfsObjectStorageService.isVersionedObjectKey(
+                "task-chunk/appearance_patent/28459/hash/chunk-462-0ffc254b-afad-4279-aab2-e85e3ff955e9.json"));
+        assertTrue(RustfsObjectStorageService.isVersionedObjectKey(
+                "task-chunk/x/1/hash/0ffc254b-afad-4279-aab2-e85e3ff955e9.json"),
+                "整个 entryKey 就是 UUID 时也应识别为唯一 key");
+        assertTrue(RustfsObjectStorageService.isVersionedObjectKey(
+                "task-chunk/x/1/hash/chunk-1-0ffc254b-afad-4279-aab2-e85e3ff955e9"),
+                "无 .json 后缀但末段是 UUID，同样视为唯一");
+    }
+
+    @Test
+    void deterministicKeyShapeIsNotRecognized() {
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("task-chunk/x/1/hash/chunk-462.json"));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("task-parsed/x/1/hash/latest.json"));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("task-result-payload/x/1/hash/28459.json"),
+                "提交号这类 key 会被重写复用，不能当成唯一 key");
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey(
+                "task-chunk/x/1/0ffc254b-afad-4279-aab2-e85e3ff955e9/chunk-462.json"),
+                "UUID 出现在中间段不算唯一——重写复用的判据只看末段");
+    }
+
+    @Test
+    void malformedKeyShapeDoesNotThrowAndIsTreatedAsShared() {
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey(null));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey(""));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("   "));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("chunk-462.json"));
+        assertFalse(RustfsObjectStorageService.isVersionedObjectKey("-afad-4279-aab2-e85e3ff955e9.json".substring(0, 20)));
+    }
+
+    // ===== 辅助 =====
+
+    private static MinioClient putOkButStatFails() {
+        MinioClient client = mock(MinioClient.class);
+        try {
+            when(client.putObject(any(PutObjectArgs.class))).thenReturn(null);
+            when(client.statObject(any(StatObjectArgs.class))).thenThrow(new IOException("stat 抖动"));
+        } catch (Exception ex) {
+            throw new IllegalStateException(ex);
+        }
+        return client;
+    }
+
+    private static TransientStorageProperties configuredProperties() {
+        TransientStorageProperties properties = new TransientStorageProperties();
+        properties.setEndpoint("http://127.0.0.1:9000");
+        properties.setBucket("bucket");
+        properties.setAccessKeyId("ak");
+        properties.setAccessKeySecret("sk");
+        properties.setBaseRetryDelayMillis(0);
+        properties.setRetryJitterMillis(0);
+        return properties;
+    }
+
+    private static <T> ObjectProvider<T> provider(T value) {
+        @SuppressWarnings("unchecked")
+        ObjectProvider<T> provider = mock(ObjectProvider.class);
+        when(provider.getIfAvailable()).thenReturn(value);
+        return provider;
+    }
+
+    private static <T> ObjectProvider<T> emptyProvider() {
+        @SuppressWarnings("unchecked")
+        ObjectProvider<T> provider = mock(ObjectProvider.class);
+        when(provider.getIfAvailable()).thenReturn(null);
+        return provider;
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/publish/service/PublishTaskServiceTest.java

@@ -751,6 +751,73 @@ class PublishTaskServiceTest {
         verify(lock).close();
     }
 
+    @Test
+    void activateFileRejectsShopAlreadyRunningInAnotherTask() {
+        long taskId = 106L;
+        long fileId = 206L;
+        FileTaskEntity task = task(taskId, 7L, "RUNNING");
+        PublishFileEntity target = file(taskId, fileId, "PENDING", "林洪武.xlsx");
+        target.setShopName("林洪武");
+        // 另一个任务（28520）正跑同一店铺 —— 2026-09-17 事故形态
+        PublishFileEntity otherTaskRunning = file(105L, 205L, "RUNNING", "林洪武.xlsx");
+        otherTaskRunning.setShopName("林洪武");
+        TaskDistributedLockService.LockHandle lock = mock(TaskDistributedLockService.LockHandle.class);
+
+        when(taskDistributedLockService.acquire(PublishTaskService.MODULE_TYPE, taskId)).thenReturn(lock);
+        when(fileTaskMapper.selectById(taskId)).thenReturn(task);
+        when(publishFileMapper.selectById(fileId)).thenReturn(target);
+        // 第一次 selectOne：同任务其它 RUNNING 文件（无）；第二次：同店铺跨任务（有）
+        when(publishFileMapper.selectOne(any())).thenReturn(null, otherTaskRunning);
+
+        BusinessException error = assertThrows(BusinessException.class,
+                () -> service.activateFile(taskId, fileId, 7L));
+
+        assertTrue(error.getMessage().contains("林洪武"), "提示要带店铺名: " + error.getMessage());
+        assertTrue(error.getMessage().contains("105"), "提示要带占用中的任务号: " + error.getMessage());
+        verify(publishFileMapper, never()).update(isNull(), any());
+        verify(lock).close();
+    }
+
+    @Test
+    void activateFileAllowsWhenShopHasNoOtherRunningTask() {
+        long taskId = 107L;
+        long fileId = 207L;
+        FileTaskEntity task = task(taskId, 7L, "RUNNING");
+        PublishFileEntity target = file(taskId, fileId, "PENDING", "林洪武.xlsx");
+        target.setShopName("林洪武");
+        TaskDistributedLockService.LockHandle lock = mock(TaskDistributedLockService.LockHandle.class);
+
+        when(taskDistributedLockService.acquire(PublishTaskService.MODULE_TYPE, taskId)).thenReturn(lock);
+        when(fileTaskMapper.selectById(taskId)).thenReturn(task);
+        when(publishFileMapper.selectById(fileId)).thenReturn(target);
+        when(publishFileMapper.selectOne(any())).thenReturn(null);
+        when(publishFileMapper.update(isNull(), any())).thenReturn(1);
+
+        service.activateFile(taskId, fileId, 7L);
+
+        verify(publishFileMapper).update(isNull(), any());
+    }
+
+    @Test
+    void activateFileSkipsShopCheckWhenShopNameBlank() {
+        long taskId = 108L;
+        long fileId = 208L;
+        FileTaskEntity task = task(taskId, 7L, "RUNNING");
+        // 未匹配到店铺的文件：没有店铺标识就不做店铺维度校验（不能因此阻断激活）
+        PublishFileEntity target = file(taskId, fileId, "PENDING", "未匹配.xlsx");
+        TaskDistributedLockService.LockHandle lock = mock(TaskDistributedLockService.LockHandle.class);
+
+        when(taskDistributedLockService.acquire(PublishTaskService.MODULE_TYPE, taskId)).thenReturn(lock);
+        when(fileTaskMapper.selectById(taskId)).thenReturn(task);
+        when(publishFileMapper.selectById(fileId)).thenReturn(target);
+        when(publishFileMapper.selectOne(any())).thenReturn(null);
+        when(publishFileMapper.update(isNull(), any())).thenReturn(1);
+
+        service.activateFile(taskId, fileId, 7L);
+
+        verify(publishFileMapper, times(1)).selectOne(any());
+    }
+
     @Test
     void activateFileIsIdempotentForTheSameRunningFile() {
         long taskId = 105L;

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlChunkUpsertTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCountryRes
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -137,6 +138,7 @@ class ShopDataCrawlChunkUpsertTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlCleanupTest.java

@@ -16,6 +16,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResu
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyFileEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyMemberEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -174,6 +175,7 @@ class ShopDataCrawlCleanupTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
         ReflectionTestUtils.setField(service, "staleTimeoutMinutes", 30L);

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlDailyFileIncrementalTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyFileEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyMemberEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -146,6 +147,7 @@ class ShopDataCrawlDailyFileIncrementalTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlDailyFileJobSplitTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyFileEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyMemberEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -152,6 +153,7 @@ class ShopDataCrawlDailyFileJobSplitTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlDailyFileLockTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyFileEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.entity.ShopDataCrawlDailyMemberEntity;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -152,6 +153,7 @@ class ShopDataCrawlDailyFileLockTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlLightweightProgressTest.java

@@ -12,6 +12,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -134,6 +135,7 @@ class ShopDataCrawlLightweightProgressTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlOwnerColumnTest.java

@@ -12,6 +12,7 @@ import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCreateTaskRequest;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlTaskItemDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlCreateTaskVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -139,6 +140,7 @@ class ShopDataCrawlOwnerColumnTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlProgressQueryTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlHistoryVo;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlTaskBatchVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -146,6 +147,7 @@ class ShopDataCrawlProgressQueryTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlRowDedupKeyTest.java

@@ -12,6 +12,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
 import com.nanri.aiimage.modules.shopdatacrawl.model.vo.ShopDataCrawlResultItemVo;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -133,6 +134,7 @@ class ShopDataCrawlRowDedupKeyTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlScopeCounterTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCountryRes
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -134,6 +135,7 @@ class ShopDataCrawlScopeCounterTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlScopeMergeTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCountryRes
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -135,6 +136,7 @@ class ShopDataCrawlScopeMergeTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopdatacrawl/service/ShopDataCrawlTaskServiceChunkTest.java

@@ -11,6 +11,7 @@ import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlCountryRes
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlRowDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlShopPayloadDto;
 import com.nanri.aiimage.modules.shopdatacrawl.model.dto.ShopDataCrawlSubmitResultRequest;
+import com.nanri.aiimage.modules.shopdatacrawl.spi.DuplicateCheckRefreshPort;
 import com.nanri.aiimage.modules.task.mapper.FileResultMapper;
 import com.nanri.aiimage.modules.task.mapper.FileTaskMapper;
 import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
@@ -129,6 +130,7 @@ class ShopDataCrawlTaskServiceChunkTest {
                 instanceMetadata,
                 dailyFileService,
                 mock(ShopDataCrawlItemStoreService.class),
+                mock(DuplicateCheckRefreshPort.class),
                 null,
                 mock(TaskProgressLightAssembler.class));
 

backend-java/src/test/java/com/nanri/aiimage/modules/shopduplicatecheck/service/support/DuplicateCheckRefreshSchedulerTest.java

@@ -0,0 +1,123 @@
+package com.nanri.aiimage.modules.shopduplicatecheck.service.support;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.BooleanSupplier;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
+
+/**
+ * 撞款重扫调度器：合并窗口去抖（突发触发聚为一次扫描）、单飞、
+ * 锁忙有限重试、动作异常吸收（对外零抛出）。
+ */
+class DuplicateCheckRefreshSchedulerTest {
+
+    private static final long AWAIT_TIMEOUT_MILLIS = 5_000L;
+
+    @Test
+    void request_mergesBurstIntoSingleScan() throws Exception {
+        AtomicInteger scans = new AtomicInteger();
+        CountDownLatch firstScan = new CountDownLatch(1);
+        DuplicateCheckRefreshScheduler scheduler = new DuplicateCheckRefreshScheduler(() -> {
+            scans.incrementAndGet();
+            firstScan.countDown();
+            return DuplicateCheckRefreshScheduler.Outcome.DONE;
+        }, 150L, 30L, 3);
+
+        scheduler.request("burst-1");
+        Thread.sleep(10L);
+        scheduler.request("burst-2");
+        Thread.sleep(10L);
+        scheduler.request("burst-3");
+
+        assertTrue(firstScan.await(AWAIT_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS), "合并窗口内的触发应执行扫描");
+        Thread.sleep(300L);
+        assertEquals(1, scans.get(), "合并窗口内多次触发只执行一次扫描");
+    }
+
+    @Test
+    void request_retriesWhileLockBusyThenSucceeds() throws Exception {
+        AtomicInteger attempts = new AtomicInteger();
+        CountDownLatch succeeded = new CountDownLatch(1);
+        DuplicateCheckRefreshScheduler scheduler = new DuplicateCheckRefreshScheduler(() -> {
+            if (attempts.incrementAndGet() <= 2) {
+                return DuplicateCheckRefreshScheduler.Outcome.LOCK_BUSY;
+            }
+            succeeded.countDown();
+            return DuplicateCheckRefreshScheduler.Outcome.DONE;
+        }, 10L, 30L, 5);
+
+        scheduler.request("retry");
+
+        assertTrue(succeeded.await(AWAIT_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS), "锁忙重试后应成功执行");
+        Thread.sleep(100L);
+        assertEquals(3, attempts.get(), "2 次锁忙 + 1 次成功");
+    }
+
+    @Test
+    void request_givesUpAfterMaxLockRetries() throws Exception {
+        AtomicInteger attempts = new AtomicInteger();
+        CountDownLatch firstAttempt = new CountDownLatch(1);
+        DuplicateCheckRefreshScheduler scheduler = new DuplicateCheckRefreshScheduler(() -> {
+            attempts.incrementAndGet();
+            firstAttempt.countDown();
+            return DuplicateCheckRefreshScheduler.Outcome.LOCK_BUSY;
+        }, 10L, 20L, 2);
+
+        scheduler.request("always-busy");
+
+        assertTrue(firstAttempt.await(AWAIT_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS));
+        awaitUntil(() -> attempts.get() >= 3, "应完成初试 + 2 次重试");
+        Thread.sleep(200L);
+        assertEquals(3, attempts.get(), "超过重试上限后放弃，不再执行");
+    }
+
+    @Test
+    void request_absorbsActionFailure() throws Exception {
+        AtomicInteger attempts = new AtomicInteger();
+        DuplicateCheckRefreshScheduler scheduler = new DuplicateCheckRefreshScheduler(() -> {
+            attempts.incrementAndGet();
+            throw new IllegalStateException("模拟扫描动作异常");
+        }, 10L, 20L, 1);
+
+        assertDoesNotThrow(() -> scheduler.request("boom"), "request 不得向调用方抛错");
+        awaitUntil(() -> attempts.get() >= 1, "动作应被执行");
+        Thread.sleep(100L);
+        assertEquals(1, attempts.get(), "动作异常视为失败，不做锁忙重试");
+    }
+
+    @Test
+    void request_afterPreviousCycleAllowsNewScan() throws Exception {
+        AtomicInteger scans = new AtomicInteger();
+        CountDownLatch twoScans = new CountDownLatch(2);
+        DuplicateCheckRefreshScheduler scheduler = new DuplicateCheckRefreshScheduler(() -> {
+            scans.incrementAndGet();
+            twoScans.countDown();
+            return DuplicateCheckRefreshScheduler.Outcome.DONE;
+        }, 20L, 20L, 2);
+
+        scheduler.request("first");
+        awaitUntil(() -> scans.get() >= 1, "首轮扫描应执行");
+        scheduler.request("second");
+
+        assertTrue(twoScans.await(AWAIT_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS), "新触发应再执行一次扫描");
+        assertEquals(2, scans.get());
+    }
+
+    private static void awaitUntil(BooleanSupplier condition, String message) throws InterruptedException {
+        long deadline = System.currentTimeMillis() + AWAIT_TIMEOUT_MILLIS;
+        while (System.currentTimeMillis() < deadline) {
+            if (condition.getAsBoolean()) {
+                return;
+            }
+            Thread.sleep(10L);
+        }
+        fail(message);
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/service/SimilarAsinTaskServiceChunkMergeLimitTest.java

@@ -33,6 +33,7 @@ import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.atomic.AtomicReference;
 
@@ -42,10 +43,12 @@ import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.lenient;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
@@ -397,4 +400,98 @@ class SimilarAsinTaskServiceChunkMergeLimitTest {
         verify(taskChunkMapper, times(1)).update(any(), any());
         verify(taskScopeStateMapper, times(0)).insert(any(TaskScopeStateEntity.class));
     }
+
+    // ===== CAS 冲突处理（2026-09-17 线上任务 28459 遗留项，与外观专利同一口径） =====
+
+    /** 冲突重试耗尽：**保留**最后一次写入的对象作读兜底，异常带出期望/当前哈希。 */
+    @Test
+    void casConflictExhaustedKeepsLastStoredObjectAsFallback() throws Exception {
+        TaskChunkEntity chunk = chunk(7L, "hashA", 1, "ptr:chunk-A");
+        chunk.setPayloadHash("hashA");
+        stubConflictMerge(chunk, 0);
+
+        FileTaskEntity task = new FileTaskEntity();
+        task.setId(9004L);
+        Throwable ex = invokeMergeExpectingFailure(task, List.of(row("r1", "B0A0000001", "标题1")));
+
+        assertTrue(ex instanceof IllegalStateException, "实际: " + ex);
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-1");
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-2");
+        verify(transientPayloadStorageService, never()).deletePayloadIfPresent("sibling-3");
+        assertTrue(ex.getMessage().contains("hashA"), "需带出期望哈希，实际: " + ex.getMessage());
+        assertTrue(ex.getMessage().contains("hashB"), "需带出当前哈希，实际: " + ex.getMessage());
+    }
+
+    /** 冲突后重试成功：被顶替的中间对象删除，最终对象写入行（不删）。 */
+    @Test
+    void casConflictThenSuccessDeletesSupersededObjects() throws Exception {
+        TaskChunkEntity chunk = chunk(7L, "hashA", 1, "ptr:chunk-A");
+        chunk.setPayloadHash("hashA");
+        stubConflictMerge(chunk, 0, 0, 1);
+
+        FileTaskEntity task = new FileTaskEntity();
+        task.setId(9004L);
+        invokeMerge(service, task, "hashA", 1, List.of(row("r1", "B0A0000001", "标题1")));
+
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-1");
+        verify(transientPayloadStorageService).deletePayloadIfPresent("sibling-2");
+        verify(transientPayloadStorageService, never()).deletePayloadIfPresent("sibling-3");
+        verify(transientPayloadStorageService).deleteReplacedPayloadIfNeeded(eq("ptr:chunk-A"), eq("sibling-3"));
+    }
+
+    /** 冲突时读回行上的当前哈希供定位（此前只有一句 conflict，线上无法定位）。 */
+    @Test
+    void casConflictReadsBackCurrentHashForDiagnostics() throws Exception {
+        TaskChunkEntity chunk = chunk(7L, "hashA", 1, "ptr:chunk-A");
+        chunk.setPayloadHash("hashA");
+        stubConflictMerge(chunk, 0);
+
+        FileTaskEntity task = new FileTaskEntity();
+        task.setId(9004L);
+        invokeMergeExpectingFailure(task, List.of(row("r1", "B0A0000001", "标题1")));
+
+        verify(taskChunkMapper, times(3)).selectById(7L);
+    }
+
+    /** 读回行失败不得掩盖原始冲突：异常信息里给出可读标记。 */
+    @Test
+    void casConflictReadBackFailureDoesNotMaskConflict() throws Exception {
+        TaskChunkEntity chunk = chunk(7L, "hashA", 1, "ptr:chunk-A");
+        chunk.setPayloadHash("hashA");
+        stubConflictMerge(chunk, 0);
+        when(taskChunkMapper.selectById(anyLong())).thenThrow(new IllegalStateException("db down"));
+
+        FileTaskEntity task = new FileTaskEntity();
+        task.setId(9004L);
+        Throwable ex = invokeMergeExpectingFailure(task, List.of(row("r1", "B0A0000001", "标题1")));
+
+        assertTrue(ex.getMessage().contains("读取失败"), "实际: " + ex.getMessage());
+    }
+
+    /** 反射调用会包一层 InvocationTargetException，取根因以便断言业务异常。 */
+    private Throwable invokeMergeExpectingFailure(FileTaskEntity task, List<SimilarAsinResultRowDto> rows) throws Exception {
+        try {
+            invokeMerge(service, task, "hashA", 1, rows);
+            return null;
+        } catch (java.lang.reflect.InvocationTargetException ex) {
+            return ex.getCause();
+        }
+    }
+
+    /** 冲突场景公共 stub：每次尝试写一个不同的版本化对象，update 按传入序列返回。 */
+    private void stubConflictMerge(TaskChunkEntity chunk, Integer... updateResults) throws Exception {
+        when(taskChunkMapper.selectList(any())).thenReturn(List.of(chunk));
+        when(taskChunkMapper.selectOne(any())).thenReturn(chunk);
+        when(transientPayloadStorageService.resolvePayload(eq("ptr:chunk-A"), anyString()))
+                .thenReturn(rowsJson(List.of(row("r0", "B0A0000000", "存量行"))));
+        AtomicInteger stores = new AtomicInteger();
+        when(transientPayloadStorageService.storeChunkPayloadVersioned(
+                anyString(), any(), anyString(), any(), anyString()))
+                .thenAnswer(inv -> "sibling-" + stores.incrementAndGet());
+        when(taskChunkMapper.update(any(), any())).thenReturn(updateResults[0], java.util.Arrays.copyOfRange(updateResults, 1, updateResults.length));
+
+        TaskChunkEntity current = chunk(7L, "hashB", 1, "ptr:chunk-A");
+        current.setPayloadHash("hashB");
+        lenient().when(taskChunkMapper.selectById(7L)).thenReturn(current);
+    }
 }

backend-java/src/test/java/com/nanri/aiimage/modules/task/service/TaskPayloadReferenceCheckTest.java

@@ -33,8 +33,13 @@ import static org.mockito.Mockito.when;
 /**
  * task-150：清理前引用检查契约（plan 09）。
  * payload 被 biz_task_chunk / biz_task_scope_state 引用则不清理；
- * chunk 仅剩自身一行（count=1）不算共享引用；查询异常保守保留；
+ * chunk 命中任意行（含仅剩 1 行）都不算「可安全清理」；查询异常保守保留；
  * 检查只读无副作用；候选值批量反查。
+ *
+ * <p>2026-09-17 线上任务 28459 之后收紧：原契约把 count==1 当作「调用方自己那行」放行删除，
+ * 但调用方无法证明那一行就是自己（如合并已把自己那行指向新对象、另一行仍指向旧对象时 count 恰为 1），
+ * 删除即造成该分片永久读不到 → 整单失败。物理删除本就约定在 DB 行删除之后执行，正常路径引用数必然为 0；
+ * 宁可留下孤儿对象（有保留期清理兜底），也不删掉可能仍被引用的对象。
  */
 @ExtendWith(MockitoExtension.class)
 class TaskPayloadReferenceCheckTest {
@@ -100,13 +105,14 @@ class TaskPayloadReferenceCheckTest {
         verify(rustfsObjectStorageService, never()).deleteObject(any());
     }
 
+    /** count==1 无法证明那一行就是调用方自己（可能正是别的行仍在用）→ 保守不删。 */
     @Test
-    void singleChunkRowIsOwnRowNotSharedReference() {
+    void singleChunkRowBlocksDeleteBecauseOwnershipCannotBeProven() {
         when(taskChunkMapper.selectCount(any())).thenReturn(1L);
 
         service.deletePayloadIfPresent(RUSTFS_VALUE);
 
-        verify(rustfsObjectStorageService).deleteObject("payload-key");
+        verify(rustfsObjectStorageService, never()).deleteObject(any());
     }
 
     @Test

backend-java/src/test/java/com/nanri/aiimage/modules/task/service/TransientPayloadChunkSiblingFallbackTest.java

@@ -0,0 +1,230 @@
+package com.nanri.aiimage.modules.task.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.nanri.aiimage.config.InstanceMetadata;
+import com.nanri.aiimage.config.StorageProperties;
+import com.nanri.aiimage.config.TransientStorageProperties;
+import com.nanri.aiimage.modules.file.service.object.RustfsObjectStorageService;
+import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
+import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskScopeStateMapper;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * chunk 载荷对象缺失时的「同槽位版本化兄弟对象」读兜底（2026-09-17 线上任务 28459）。
+ *
+ * <p>事故后 DB 行指向的普通 key（{@code chunk-462.json}）已被误删，但同槽位的版本化对象
+ * （{@code chunk-462-<uuid>.json}）还在。兜底让读路径自动改用兄弟对象，任务即可按已有数据出结果，
+ * 而不是整单 FAILED——这是防止「删错对象 → 任务永久失败」的最后一道网。
+ */
+class TransientPayloadChunkSiblingFallbackTest {
+
+    private static final String DIR = "task-chunk/appearance_patent/28459/"
+            + "2248d39710545b47b7c7035fc60c4e33924a16174abf65dd1c5a230918e6f61e/";
+    private static final String CHUNK_KEY = DIR + "chunk-462.json";
+    private static final String CHUNK_POINTER = "rustfs:" + CHUNK_KEY;
+    private static final String SIBLING_KEY = DIR + "chunk-462-0ffc254b-afad-4279-aab2-e85e3ff955e9.json";
+
+    // ===== 正常路径 =====
+
+    /** 对象在：直接读，不得触发列对象（正常读路径不能因为兜底变慢）。 */
+    @Test
+    void presentObjectIsReadWithoutListing() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenReturn(bytes("[\"原始\"]"));
+
+        String payload = service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed");
+
+        assertEquals("[\"原始\"]", payload);
+        verify(rustfs, never()).listObjectKeysNewestFirst(anyString(), anyInt());
+    }
+
+    /** 对象缺失 + 存在兄弟对象 → 读兄弟对象（本次事故的自动恢复路径）。 */
+    @Test
+    void missingChunkObjectFallsBackToVersionedSibling() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(DIR + "chunk-462-", 50)).thenReturn(List.of(SIBLING_KEY));
+        when(rustfs.readObjectBytes(SIBLING_KEY)).thenReturn(bytes("[\"合并后\"]"));
+
+        String payload = service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed");
+
+        assertEquals("[\"合并后\"]", payload);
+        verify(rustfs).listObjectKeysNewestFirst(DIR + "chunk-462-", 50);
+    }
+
+    /** 多个兄弟对象：取列表首个（实现约定按最后修改时间倒序，最新在前）。 */
+    @Test
+    void newestSiblingIsPreferred() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        String newest = DIR + "chunk-462-ffffffff-ffff-ffff-ffff-ffffffffffff.json";
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(anyString(), anyInt())).thenReturn(List.of(newest, SIBLING_KEY));
+        when(rustfs.readObjectBytes(newest)).thenReturn(bytes("[\"最新\"]"));
+
+        assertEquals("[\"最新\"]", service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed"));
+        verify(rustfs).readObjectBytes(newest);
+        verify(rustfs, never()).readObjectBytes(SIBLING_KEY);
+    }
+
+    /** 指针是 JSON 编码形式（DB 里的常见写法）时兜底同样生效。 */
+    @Test
+    void jsonQuotedPointerStillFallsBack() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(anyString(), anyInt())).thenReturn(List.of(SIBLING_KEY));
+        when(rustfs.readObjectBytes(SIBLING_KEY)).thenReturn(bytes("[\"带引号\"]"));
+
+        assertEquals("[\"带引号\"]",
+                service(rustfs).resolvePayload('"' + CHUNK_POINTER + '"', "read chunk failed"));
+    }
+
+    /** 非指针内容（直接就是载荷 JSON）原样返回，不触碰对象存储。 */
+    @Test
+    void rawContentIsReturnedAsIs() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+
+        assertEquals("[1,2,3]", service(rustfs).resolvePayload("[1,2,3]", "read chunk failed"));
+        verify(rustfs, never()).readObjectBytes(anyString());
+    }
+
+    // ===== 边界：不该兜底的场景 =====
+
+    /** 非 chunk 槽位（如 row-1.json）缺失 → 不兜底，照旧抛错（避免误配无关对象）。 */
+    @Test
+    void nonChunkSlotDoesNotFallBack() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        String key = "task-result-item/similar-asin/9/hash/row-1.json";
+        when(rustfs.readObjectBytes(key)).thenThrow(missingKey());
+
+        assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload("rustfs:" + key, "read item failed"));
+
+        verify(rustfs, never()).listObjectKeysNewestFirst(anyString(), anyInt());
+    }
+
+    /** parsed 槽位（latest.json）缺失 → 不兜底（该槽位没有版本化兄弟语义）。 */
+    @Test
+    void parsedSlotDoesNotFallBack() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        String key = "task-parsed/appearance_patent/28459/hash/latest.json";
+        when(rustfs.readObjectBytes(key)).thenThrow(missingKey());
+
+        assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload("rustfs:" + key, "read parsed failed"));
+
+        verify(rustfs, never()).listObjectKeysNewestFirst(anyString(), anyInt());
+    }
+
+    /** 非缺失类失败（权限/网络）→ 不兜底，照旧上抛以便重试。 */
+    @Test
+    void nonMissingFailureDoesNotFallBack() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY))
+                .thenThrow(new IllegalStateException("Access Denied"));
+
+        assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed"));
+
+        verify(rustfs, never()).listObjectKeysNewestFirst(anyString(), anyInt());
+    }
+
+    // ===== 异常路径 =====
+
+    /** 没有兄弟对象 → 抛错，且错误信息必须保留原 errorMessage 与原指针（便于定位）。 */
+    @Test
+    void noSiblingRethrowsWithOriginalPointer() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(anyString(), anyInt())).thenReturn(List.of());
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed"));
+
+        assertTrue(ex.getMessage().contains("read chunk failed"), "错误信息=" + ex.getMessage());
+        assertTrue(ex.getMessage().contains("chunk-462.json"), "错误信息=" + ex.getMessage());
+    }
+
+    /** 兄弟对象读取也失败 → 异常上抛，不得静默返回空内容。 */
+    @Test
+    void siblingReadFailurePropagates() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(anyString(), anyInt())).thenReturn(List.of(SIBLING_KEY));
+        when(rustfs.readObjectBytes(SIBLING_KEY)).thenThrow(new IllegalStateException("read timeout"));
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed"));
+
+        assertTrue(ex.getMessage().contains("read chunk failed"), "错误信息=" + ex.getMessage());
+    }
+
+    /** 列对象本身失败（桶不可用）→ 仍按原错误抛出，错误信息不含兄弟查找细节。 */
+    @Test
+    void listFailureDoesNotMaskOriginalError() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        when(rustfs.readObjectBytes(CHUNK_KEY)).thenThrow(missingKey());
+        when(rustfs.listObjectKeysNewestFirst(anyString(), anyInt()))
+                .thenThrow(new IllegalStateException("bucket unavailable"));
+
+        IllegalStateException ex = assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload(CHUNK_POINTER, "read chunk failed"));
+
+        assertTrue(ex.getMessage().contains("read chunk failed"), "错误信息=" + ex.getMessage());
+    }
+
+    /** local 指针不走 rustfs 兄弟兜底。 */
+    @Test
+    void localPointerDoesNotUseChunkSiblingFallback() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+
+        assertThrows(IllegalStateException.class,
+                () -> service(rustfs).resolvePayload("local:i/server-121/" + CHUNK_KEY, "read chunk failed"));
+
+        verify(rustfs, never()).listObjectKeysNewestFirst(anyString(), anyInt());
+    }
+
+    // ===== 辅助 =====
+
+    private static IllegalStateException missingKey() {
+        return new IllegalStateException("The specified key does not exist.");
+    }
+
+    private static byte[] bytes(String value) {
+        return value.getBytes(StandardCharsets.UTF_8);
+    }
+
+    private TransientPayloadStorageService service(RustfsObjectStorageService rustfs) {
+        TransientStorageProperties transientProperties = new TransientStorageProperties();
+        transientProperties.setEnabled(true);
+        transientProperties.setEndpoint("http://127.0.0.1:9000");
+        transientProperties.setBucket("json-server");
+        transientProperties.setAccessKeyId("ak");
+        transientProperties.setAccessKeySecret("sk");
+        StorageProperties storageProperties = new StorageProperties();
+        storageProperties.setLocalTempDir(System.getProperty("java.io.tmpdir"));
+        return new TransientPayloadStorageService(
+                transientProperties,
+                storageProperties,
+                rustfs,
+                mock(OssStorageService.class),
+                new ObjectMapper(),
+                new InstanceMetadata("server-121"),
+                mock(TaskChunkMapper.class),
+                mock(TaskScopeStateMapper.class));
+    }
+}

backend-java/src/test/java/com/nanri/aiimage/modules/task/service/TransientPayloadDeleteReferenceGuardTest.java

@@ -0,0 +1,180 @@
+package com.nanri.aiimage.modules.task.service;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.nanri.aiimage.config.InstanceMetadata;
+import com.nanri.aiimage.config.StorageProperties;
+import com.nanri.aiimage.config.TransientStorageProperties;
+import com.nanri.aiimage.modules.file.service.oss.OssStorageService;
+import com.nanri.aiimage.modules.file.service.object.RustfsObjectStorageService;
+import com.nanri.aiimage.modules.task.mapper.TaskChunkMapper;
+import com.nanri.aiimage.modules.task.mapper.TaskScopeStateMapper;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * 临时载荷删除前的引用守卫（2026-09-17 线上任务 28459 事故的第二条同族缺陷）。
+ *
+ * <p>守卫本意是「还有别的行引用同一 pointer 就不物理删」。原实现用
+ * {@code chunkCount > 1} 作判据，等价于「恰好还有 1 行引用时可以删」——
+ * 这在 caller 已经把自己那行挪走、但**另一行**仍指向旧对象的场景下，会把
+ * 对方仍在用的对象删掉。docs 里 CollectDataDeleteConsistencyTest 已明确口径是
+ * 「跨任务共享指针仍引用 → 跳过删除」，故判据收紧为「命中任意一行即不删」。
+ */
+class TransientPayloadDeleteReferenceGuardTest {
+
+    private static final String RUSTFS_CHUNK_POINTER =
+            "rustfs:task-chunk/appearance_patent/28459/2248d39710545b47b7c7035fc60c4e33924a16174abf65dd1c5a230918e6f61e/chunk-462.json";
+
+    // ===== 正常路径 =====
+
+    /** 没有任何行引用 → 允许物理删除。 */
+    @Test
+    void zeroReferencesAllowsPhysicalDelete() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        TaskScopeStateMapper scopeMapper = mock(TaskScopeStateMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(0L);
+        when(scopeMapper.selectCount(any())).thenReturn(0L);
+
+        service(rustfs, chunkMapper, scopeMapper).deletePayloadIfPresent(RUSTFS_CHUNK_POINTER);
+
+        verify(rustfs).deleteObject(eq("task-chunk/appearance_patent/28459/2248d39710545b47b7c7035fc60c4e33924a16174abf65dd1c5a230918e6f61e/chunk-462.json"));
+    }
+
+    /** 多条行引用 → 不删（原有行为必须保持）。 */
+    @Test
+    void multipleReferencesBlockDelete() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(3L);
+
+        service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class)).deletePayloadIfPresent(RUSTFS_CHUNK_POINTER);
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    // ===== 本次修复点 =====
+
+    /** 恰好 1 行仍引用 → 必须不删（原实现会删掉这唯一一行仍在用的对象）。 */
+    @Test
+    void singleReferencingChunkRowBlocksDelete() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(1L);
+
+        service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class)).deletePayloadIfPresent(RUSTFS_CHUNK_POINTER);
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    /** scope_state 单行引用同样阻断删除（该字段命中即非自我引用）。 */
+    @Test
+    void singleScopeStateReferenceBlocksDelete() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        TaskScopeStateMapper scopeMapper = mock(TaskScopeStateMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(0L);
+        when(scopeMapper.selectCount(any())).thenReturn(1L);
+
+        service(rustfs, chunkMapper, scopeMapper).deletePayloadIfPresent(RUSTFS_CHUNK_POINTER);
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    // ===== 边界 =====
+
+    /** 传入 JSON 编码（带引号）的指针——DB 里常见写法，必须能解析并同样受守卫约束。 */
+    @Test
+    void jsonQuotedPointerIsParsedAndStillGuarded() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(1L);
+
+        service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class))
+                .deletePayloadIfPresent('"' + RUSTFS_CHUNK_POINTER + '"');
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    /** 非指针值原样传入 → 不解析、不查库、不删。 */
+    @Test
+    void nonPointerValueIsIgnoredWithoutLookup() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+
+        TransientPayloadStorageService service = service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class));
+        assertDoesNotThrow(() -> service.deletePayloadIfPresent("{\"rows\":[1,2,3]}"));
+
+        verify(chunkMapper, never()).selectCount(any());
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    /** 空值不得抛异常、不得触发任何删除。 */
+    @Test
+    void nullOrBlankValueIsIgnored() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        TransientPayloadStorageService service = service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class));
+
+        assertDoesNotThrow(() -> service.deletePayloadIfPresent(null));
+        assertDoesNotThrow(() -> service.deletePayloadIfPresent("   "));
+
+        verify(chunkMapper, never()).selectCount(any());
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    // ===== 异常路径 =====
+
+    /** 反查引用的查询抛异常 → 保守不删（原实现即如此，必须保持）。 */
+    @Test
+    void referenceQueryFailureIsConservativeAndSkipsDelete() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        when(chunkMapper.selectCount(any())).thenThrow(new IllegalStateException("db down"));
+
+        assertDoesNotThrow(() ->
+                service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class))
+                        .deletePayloadIfPresent(RUSTFS_CHUNK_POINTER));
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    /** 跨实例的 local 指针：不物理删（留给持有实例的清理任务）。 */
+    @Test
+    void crossInstanceLocalPointerIsNotDeleted() {
+        RustfsObjectStorageService rustfs = mock(RustfsObjectStorageService.class);
+        TaskChunkMapper chunkMapper = mock(TaskChunkMapper.class);
+        when(chunkMapper.selectCount(any())).thenReturn(0L);
+
+        service(rustfs, chunkMapper, mock(TaskScopeStateMapper.class))
+                .deletePayloadIfPresent("local:i/server-110/task-chunk/x/1/hash/chunk-1.json");
+
+        verify(rustfs, never()).deleteObject(anyString());
+    }
+
+    private TransientPayloadStorageService service(RustfsObjectStorageService rustfs,
+                                                   TaskChunkMapper chunkMapper,
+                                                   TaskScopeStateMapper scopeMapper) {
+        TransientStorageProperties transientProperties = new TransientStorageProperties();
+        transientProperties.setEnabled(true);
+        StorageProperties storageProperties = new StorageProperties();
+        storageProperties.setLocalTempDir(System.getProperty("java.io.tmpdir"));
+        return new TransientPayloadStorageService(
+                transientProperties,
+                storageProperties,
+                rustfs,
+                mock(OssStorageService.class),
+                new ObjectMapper(),
+                new InstanceMetadata("server-121"),
+                chunkMapper,
+                scopeMapper);
+    }
+}

frontend-vue/src/main.ts

@@ -11,10 +11,14 @@ import router from '@/router'
 import { ensureAuth } from '@/shared/auth/ensure-auth'
 import { ensureApiSecretsLoaded, loadApiSecrets } from '@/shared/utils/api-secret-store'
 import { installUserTokenSync } from '@/shared/auth/user-token-sync.ts'
+import { installSubmitGuard } from '@/shared/utils/submit-guard'
 
 // 登录态令牌同步给桌面端 Python（A1/A3）：无桥环境静默跳过
 installUserTokenSync()
 
+// 提交按钮防连点：捕获阶段拦下同一按钮的连点（各工具页 .btn-run 通用）
+installSubmitGuard()
+
 /**
  * 数富AI 前端统一入口（SPA，URL 无 .html 后缀）
  *

frontend-vue/src/pages/brand/components/BrandConvertTab.vue

@@ -166,7 +166,7 @@ import {
 } from '@/shared/api/java-modules'
 import { getPywebviewApi, type UploadedJavaFile } from '@/shared/bridges/pywebview'
 import { saveUrlWithProgress } from '@/shared/utils/download-progress'
-import { EXCEL_EXTENSIONS, checkSelectedFiles, guardBlocked } from '@/shared/dispatch-guard'
+import { EXCEL_EXTENSIONS, checkSelectedFiles, collectDistinctErrors, guardBlocked } from '@/shared/dispatch-guard'
 import { passGuard } from '@/shared/dispatch-guard-ui'
 import { formatDateTime } from '@/shared/utils/datetime'
 import { uploadPathsToJava } from '@/shared/utils/upload-to-java'
@@ -349,11 +349,15 @@ async function submitConvertRun() {
     convertResultItems.value = result.items || []
     await loadConvertHistory()
     if (result.total > 0 && result.successCount === 0) {
+      // 逐文件原因就在 items[].error 里，优先直接列出，不再让用户对着「常见原因」猜
+      const details = collectDistinctErrors((result.items || []).map((item) => item.error)).slice(0, 5)
       await passGuard(
         guardBlocked(
           '格式转换未成功',
           `本次提交的 ${result.total} 个文件全部转换失败。\n` +
-            '常见原因是源文件表头与所选模板不匹配，或文件内没有数据行。\n' +
+            (details.length
+              ? `失败原因：\n${details.map((message) => `· ${message}`).join('\n')}\n`
+              : '常见原因是源文件表头与所选模板不匹配，或文件内没有数据行。\n') +
             '请在右侧结果列表查看每个文件的失败原因，或换一个模板后重试。',
           'convert.all-failed',
         ),

frontend-vue/src/pages/brand/components/BrandDedupeTab.vue

@@ -137,7 +137,7 @@ import { expandBrandFolderRecursive } from '@/shared/api/brand'
 import { deleteDedupeHistory, getDedupeHistory, getDedupeResultDownloadUrl, getDedupeRunProgress, getExcelInfo, runDedupe, type DedupeResultItem, type DedupeRunProgressVo, type DedupeRunVo } from '@/shared/api/java-modules'
 import { getPywebviewApi, type UploadedJavaFile } from '@/shared/bridges/pywebview'
 import { saveUrlWithProgress } from '@/shared/utils/download-progress'
-import { EXCEL_EXTENSIONS, checkSelectedFiles, guardBlocked } from '@/shared/dispatch-guard'
+import { EXCEL_EXTENSIONS, checkSelectedFiles, collectDistinctErrors, guardBlocked } from '@/shared/dispatch-guard'
 import { passGuard } from '@/shared/dispatch-guard-ui'
 import { formatDateTime } from '@/shared/utils/datetime'
 import { uploadPathsToJava } from '@/shared/utils/upload-to-java'
@@ -237,7 +237,8 @@ function clearAllCleanColumns() {
 async function loadCleanHeaders(fileKey: string) {
   const result = await getExcelInfo(fileKey)
   if (!result.headers?.length) {
-    ElMessage.error('读取 Excel 表头失败')
+    // 接口本身成功、只是没解析出表头，说明文件内容有问题而非「读取失败」，别让用户反复重选文件
+    ElMessage.error('未读到表头行：请确认文件不是空表、且首行是表头')
     cleanAvailableColumns.value = []
     cleanSelectedColumns.value = []
     return
@@ -359,11 +360,15 @@ async function submitCleanRun() {
     await loadCleanHistory()
     // 全部文件都失败时不该报「完成」，让用户看清是哪一批没处理成功
     if (result.total > 0 && result.successCount === 0) {
+      // 逐文件原因就在 items[].error 里，优先直接列出，不再让用户对着「常见原因」猜
+      const details = collectDistinctErrors((result.items || []).map((item) => item.error)).slice(0, 5)
       await passGuard(
         guardBlocked(
           '去重未成功',
           `本次提交的 ${result.total} 个文件全部处理失败。\n` +
-            '常见原因是表头列名与所选保留列对不上，或文件内没有数据行。\n' +
+            (details.length
+              ? `失败原因：\n${details.map((message) => `· ${message}`).join('\n')}\n`
+              : '常见原因是表头列名与所选保留列对不上，或文件内没有数据行。\n') +
             '请在右侧结果列表查看每个文件的失败原因后重试。',
           'dedupe.all-failed',
         ),

frontend-vue/src/pages/brand/components/BrandDeleteBrandTab.vue

@@ -1105,7 +1105,13 @@ async function submitRun() {
     syncResultState()
 
     if (hasBlockedItems) {
-      ElMessage.warning('部分文件尚未匹配到店铺，已保留状态信息，请稍后重试。')
+      // 具体原因（店铺未录入 / 索引未命中 / 表头错误等）在各文件项里，直接带出来；
+      // 只报「请稍后重试」会把「需去后台添加店铺」误导成「等一等就好」
+      const firstBlocked = normalizedItems.find((item) => !isUsableMatchedItem(item))
+      const detail = firstBlocked ? getDisplayError(firstBlocked) : ''
+      ElMessage.warning(detail
+        ? `部分文件不可启动：${detail}`
+        : '部分文件尚未匹配到店铺，已保留状态信息，请稍后重试。')
     } else if (hasStaleMatchedItems) {
       ElMessage.warning('部分文件匹配到的店铺信息已过期，仍可启动任务；后台会自动重新匹配。')
     } else if (hasRunnableItems) {

frontend-vue/src/pages/brand/components/BrandPatrolDeleteTab.vue

@@ -511,6 +511,12 @@ function formatMatchRemark(row: PatrolDeleteShopQueueItem) {
   if (row.matched) {
     return "已匹配成功，请查看状态确认";
   }
+  if (row.matchStatus === "CONFLICT") {
+    return "存在多个同名店铺，请人工确认";
+  }
+  if (row.matchStatus === "PENDING") {
+    return "店铺尚未匹配完成，请稍后查看";
+  }
   return "未匹配成功，请检查店铺名";
 }
 

frontend-vue/src/pages/brand/components/BrandPriceTrackTab.vue

@@ -848,6 +848,8 @@ function formatMatchRemark(row: PriceTrackShopQueueItem) {
   if (msg) return msg
   if (row.matched && row.matchStatus === 'MATCHED') return '已匹配成功，可启动任务'
   if (row.matched) return '已关联店铺，请查看状态确认'
+  if (row.matchStatus === 'CONFLICT') return '存在多个同名店铺，请人工确认'
+  if (row.matchStatus === 'PENDING') return '店铺尚未匹配完成，请稍后查看'
   return '未匹配成功，请检查店铺名'
 }
 

frontend-vue/src/pages/brand/components/BrandProductRiskTab.vue

@@ -1056,6 +1056,12 @@ function formatMatchRemark(row: ProductRiskShopQueueItem) {
   if (row.matched) {
     return '已关联店铺，请查看状态确认'
   }
+  if (row.matchStatus === 'CONFLICT') {
+    return '存在多个同名店铺，请人工确认'
+  }
+  if (row.matchStatus === 'PENDING') {
+    return '店铺尚未匹配完成，请稍后查看'
+  }
   return '未匹配成功，请检查店铺名'
 }
 

frontend-vue/src/pages/brand/components/BrandPublishTab.vue

@@ -216,6 +216,8 @@ import {
   checkParseResult,
   checkQueuePayload,
   checkSelectedFiles,
+  collectDistinctErrors,
+  guardBlocked,
 } from '@/shared/dispatch-guard'
 import { passGuard } from '@/shared/dispatch-guard-ui'
 import { useZiniaoVersion, type ZiniaoVersion } from '@/shared/utils/ziniao-version'
@@ -563,10 +565,25 @@ async function submitRun() {
       sync_countries: syncCountries.value.filter((country) => country !== publishCountry.value),
     })
     if (!parsed.taskId) throw new Error('后端未返回有效任务标识')
-    // publish 的 Vo 用 files 承载明细，没有 acceptedRows；这里先卡住 taskId 与总行数
+    const fileErrors = collectDistinctErrors(
+      (parsed.files || []).map((file) => file.errorMessage || file.error),
+    )
+    // 店铺未录入后台是最高频的解析失败原因（2026-09-17 客户因此连试 7 次），
+    // 单独用「店铺未找到」弹窗直给后端原因，避免被通用文案淹没
+    const missingShopErrors = fileErrors.filter((message) => message.includes('未找到店铺'))
+    if (!parsed.totalRows && missingShopErrors.length) {
+      await passGuard(guardBlocked('店铺未找到', missingShopErrors.join('\n'), 'publish.shop-missing'))
+      return
+    }
+    // publish 的 Vo 用 files 承载明细，没有 acceptedRows；这里先卡住 taskId 与总行数。
+    // 文件级失败（店铺未匹配等）时 Java 不解析 Excel、totalRows 同样为 0，把具体
+    // 原因一并交给 guard 优先展示，避免只报「没有读到任何数据行」误导排查方向。
     const guard = checkParseResult(
       { taskId: parsed.taskId, totalRows: parsed.totalRows, acceptedRows: parsed.totalRows },
-      { requiredColumnsHint: '店铺名 / 商品行' },
+      {
+        requiredColumnsHint: '店铺名 / 商品行',
+        fileErrors,
+      },
     )
     if (!(await passGuard(guard))) return
 
@@ -604,7 +621,9 @@ async function submitRun() {
 
     await Promise.all([loadDashboard(), loadHistory()])
     if (!batch.pendingFileIds.length) {
-      queueMessage.value = '解析完成，当前没有匹配成功且可上架的文件。'
+      queueMessage.value = fileErrors.length
+        ? `解析完成，当前没有匹配成功且可上架的文件：${fileErrors[0]}`
+        : '解析完成，当前没有匹配成功且可上架的文件。'
       ElMessage.warning(queueMessage.value)
       return
     }
@@ -917,7 +936,10 @@ async function processQueue() {
             saveQueueState()
             throw new Error(queueMessage.value)
           }
-          queueMessage.value = `文件 ${file.sourceFilename || nextFileId} 启动失败，已记录并继续下一个文件。`
+          // 原因必须回显给用户：后端会因「该店铺已有上架任务在执行」直接拒绝激活，
+          // 只写日志的话用户只看到"启动失败"，会以为是文件问题而反复重传
+          queueMessage.value = `文件 ${file.sourceFilename || nextFileId} 启动失败：${reason}`
+          ElMessage.warning(queueMessage.value)
           activeFileId.value = null
           saveQueueState()
         }

frontend-vue/src/pages/brand/components/BrandQueryAsinTab.vue

@@ -439,6 +439,12 @@ function formatMatchRemark(row: QueryAsinShopQueueItem) {
   if (row.matched) {
     return "已匹配成功，请查看状态确认";
   }
+  if (row.matchStatus === "CONFLICT") {
+    return "存在多个同名店铺，请人工确认";
+  }
+  if (row.matchStatus === "PENDING") {
+    return "店铺尚未匹配完成，请稍后查看";
+  }
   return "未匹配成功，请检查店铺名";
 }
 

frontend-vue/src/pages/brand/components/BrandShopMatchTab.vue

@@ -565,7 +565,7 @@ async function deleteTaskRecord(item: ShopMatchHistoryItem) {
   }
 }
 function formatMatchStatus(status?: string) { const value = (status || '').trim(); return { MATCHED: '已匹配', PENDING: '待匹配', CONFLICT: '需人工确认', INDEX_STALE: '匹配已过期' }[value] || value || '—' }
-function formatMatchRemark(row: ShopMatchShopQueueItem) { const message = (row.matchMessage || '').trim(); if (message) return message; if (row.matched && row.matchStatus === 'MATCHED') return '已匹配成功，可启动任务'; if (row.matched) return '已关联店铺，请查看状态确认'; return '未匹配成功，请检查店铺名' }
+function formatMatchRemark(row: ShopMatchShopQueueItem) { const message = (row.matchMessage || '').trim(); if (message) return message; if (row.matched && row.matchStatus === 'MATCHED') return '已匹配成功，可启动任务'; if (row.matched) return '已关联店铺，请查看状态确认'; if (row.matchStatus === 'CONFLICT') return '存在多个同名店铺，请人工确认'; if (row.matchStatus === 'PENDING') return '店铺尚未匹配完成，请稍后查看'; return '未匹配成功，请检查店铺名' }
 async function pushToPythonQueue() { autoQueueEnabled.value = true; await processMatchedQueue() }
 function nextMatchedQueueItem() { return matchedItems.value.find((item) => item.matched) }
 async function processMatchedQueue() { if (disposed || queueWorkerRunning.value) return; const api = getPywebviewApi(); if (!api?.enqueue_json) { ElMessage.error('当前客户端未提供 enqueue_json'); return } const matched = matchedItems.value.filter((item) => item.matched); if (!matched.length) { ElMessage.warning('请先匹配可用店铺'); return } if (!orderedCountryCodes.value.length) { ElMessage.warning('请至少勾选一个国家'); return } let scheduleValues: string[] | undefined; try { scheduleValues = parseScheduleValues() } catch (error) { ElMessage.error(error instanceof Error ? error.message : '定时配置无效'); return } queueWorkerRunning.value = true; pushing.value = true; queuePayloadText.value = ''; let successCount = 0; let failedCount = 0; let index = 0; try { while (!disposed && autoQueueEnabled.value) { const item = nextMatchedQueueItem(); if (!item) break; index += 1; try { const created = await withTransientRetry(() => createShopMatchTask([buildTaskCreateItem(item)], orderedCountryCodes.value, scheduleValues), (attempt, maxAttempts) => { queuePushResult.value = `服务暂时不可用，正在重试创建任务（${attempt}/${maxAttempts}）...` }); const taskId = created.taskId; const initialStatus = scheduleValues?.length ? 'SCHEDULED' : 'RUNNING'; const snapshot: ShopMatchTaskDetailVo = { task: { id: taskId, status: initialStatus, scheduledAt: scheduleValues?.[0], countryCodes: [...orderedCountryCodes.value], currentStageIndex: scheduleValues?.length ? 0 : undefined, activeStageIndex: undefined, scheduleStages: (scheduleValues || []).map((value, stageIndex) => ({ stageIndex, scheduledAt: value, status: stageIndex === 0 ? 'SCHEDULED' : 'PENDING' })) }, items: created.items }; taskSnapshots.value = { ...taskSnapshots.value, [taskId]: snapshot }; taskDetails.value = { ...taskDetails.value, [taskId]: initialStatus }; saveTaskSnapshotsToStorage(); saveTaskDetailsToStorage(); const createdItem = created.items?.[0]; if (!createdItem) { removeMatchedRowsLocally([item]); continue } if (scheduleValues?.length) { successCount += 1; restoreScheduledDispatches(); queuePushResult.value = `任务 ${taskId} 已创建，共 ${scheduleValues.length} 个执行时间点`; removeMatchedRowsLocally([item]); continue } const payload = buildQueuePayload(taskId, item, orderedCountryCodes.value); queuePayloadText.value = JSON.stringify(payload, null, 2); const result = await api.enqueue_json(payload); if (!result?.success) { failedCount += 1; queuePushResult.value = `任务 ${taskId} 启动失败，已自动继续下一条：${result?.error || '未知错误'}`; ElMessage.error(queuePushResult.value); removeMatchedRowsLocally([item]); continue } addPollingTask(taskId); ensurePolling(true); removeMatchedRowsLocally([item]); queuePushResult.value = `任务 ${taskId} 已提交，等待执行完成`; const finalStatus = await waitForTaskTerminal(taskId); if (finalStatus !== 'SUCCESS') { failedCount += 1; queuePushResult.value = `任务 ${taskId} 执行失败，已自动继续下一条`; ElMessage.error(queuePushResult.value); continue } successCount += 1; queuePushResult.value = `任务 ${taskId} 已完成` } catch (error) { if (disposed) break; failedCount += 1; queuePushResult.value = `第 ${index} 条任务处理失败，已自动继续下一条：${error instanceof Error ? error.message : '未知错误'}`; ElMessage.error(queuePushResult.value); removeMatchedRowsLocally([item]); continue } } restoreScheduledDispatches(); if (!scheduleValues?.length) ensurePolling(true); if (!disposed && (successCount > 0 || failedCount > 0)) ElMessage.success(scheduleValues?.length ? `定时任务已创建：成功 ${successCount} 条，失败 ${failedCount} 条` : `店铺启动已完成：成功 ${successCount} 条，失败 ${failedCount} 条`) } catch (error) { if (disposed) return; const message = error instanceof Error ? error.message : '启动失败'; queuePushResult.value = message; ElMessage.error(message) } finally { queueWorkerRunning.value = false; pushing.value = false } }

frontend-vue/src/pages/brand/components/BrandSplitTab.vue

@@ -145,7 +145,7 @@ import { expandBrandFolderRecursive } from '@/shared/api/brand'
 import { deleteSplitHistory, getExcelInfo, getSplitHistory, getSplitResultDownloadUrl, runSplit, type SplitResultItem } from '@/shared/api/java-modules'
 import { getPywebviewApi, type UploadedJavaFile } from '@/shared/bridges/pywebview'
 import { saveUrlWithProgress } from '@/shared/utils/download-progress'
-import { EXCEL_EXTENSIONS, checkSelectedFiles, guardBlocked } from '@/shared/dispatch-guard'
+import { EXCEL_EXTENSIONS, checkSelectedFiles, collectDistinctErrors, guardBlocked } from '@/shared/dispatch-guard'
 import { passGuard } from '@/shared/dispatch-guard-ui'
 import { formatDateTime } from '@/shared/utils/datetime'
 import { uploadPathsToJava } from '@/shared/utils/upload-to-java'
@@ -327,11 +327,15 @@ async function submitSplitRun() {
     splitResultItems.value = result.items || []
     await loadSplitHistory()
     if (result.total > 0 && result.successCount === 0) {
+      // 逐文件原因就在 items[].error 里，优先直接列出，不再让用户对着「常见原因」猜
+      const details = collectDistinctErrors((result.items || []).map((item) => item.error)).slice(0, 5)
       await passGuard(
         guardBlocked(
           '拆分未成功',
           `本次提交的 ${result.total} 个文件全部处理失败。\n` +
-            '常见原因是表头列名与所选保留列对不上，或文件内没有数据行。\n' +
+            (details.length
+              ? `失败原因：\n${details.map((message) => `· ${message}`).join('\n')}\n`
+              : '常见原因是表头列名与所选保留列对不上，或文件内没有数据行。\n') +
             '请在右侧结果列表查看每个文件的失败原因后重试。',
           'split.all-failed',
         ),

frontend-vue/src/pages/brand/components/BrandWithdrawTab.vue

@@ -570,6 +570,12 @@ function formatMatchRemark(row: WithdrawShopQueueItem) {
   if (row.matched) {
     return "已匹配成功，请查看状态确认";
   }
+  if (row.matchStatus === "CONFLICT") {
+    return "存在多个同名店铺，请人工确认";
+  }
+  if (row.matchStatus === "PENDING") {
+    return "店铺尚未匹配完成，请稍后查看";
+  }
   return "未匹配成功，请检查店铺名";
 }
 

frontend-vue/src/pages/image-video/components/DeliveryVideoWorkspace.vue

@@ -1015,12 +1015,12 @@ async function waitForImageVideoTask(ticket: ImageVideoAsyncTaskVo): Promise<unk
     }
     if (task.status === 'SUCCESS') return task.result
     if (isTerminalImageVideoTask(task)) {
-      throw new Error(task.errorMessage || 'Coze task failed')
+      throw new Error(task.errorMessage || 'Coze 任务执行失败')
     }
     await sleep(IMAGE_VIDEO_TASK_POLL_DELAY_MS)
     task = await getImageVideoAsyncTask(task.taskId)
   }
-  throw new Error('Coze task polling timed out')
+  throw new Error('Coze 任务查询超时，请稍后重试')
 }
 
 async function rewriteScriptFromSource() {
@@ -1296,7 +1296,8 @@ async function pollAssemblyResult(tab: WorkspaceTab, taskId: number) {
     if (isTerminalImageVideoTask(task)) {
       assembly.polling = false
       if (task.status === 'FAILED') {
-        ElMessage.error('Coze 工作流执行失败')
+        // 后端 errorMessage 带具体原因（内容违规/超时/额度等），只报「执行失败」用户无从下手
+        ElMessage.error(task.errorMessage ? `Coze 工作流执行失败：${task.errorMessage}` : 'Coze 工作流执行失败')
       } else {
         ElMessage.success(videoUrl || assembly.videoUrl ? '视频生成完成' : 'Coze 工作流执行完成，未解析到视频地址')
       }

frontend-vue/src/shared/client-changelog.ts

@@ -24,6 +24,15 @@ export interface ClientChangelogEntry {
 
 /** 更新日志数据（新版本在前；发版时在数组最前追加一条） */
 export const CLIENT_CHANGELOG: ClientChangelogEntry[] = [
+  {
+    version: '4.0.28',
+    date: '2026-09-17',
+    items: [
+      '修复多个任务同时操作同一店铺导致「打开店铺失败」的问题',
+      '同一店铺的任务改为排队执行，不会再互相打断',
+      '紫鸟更新内核期间不再直接报「打开店铺失败」，而是等待完成',
+    ],
+  },
   {
     version: '4.0.27',
     date: '2026-09-17',

frontend-vue/src/shared/dispatch-guard.ts

@@ -267,6 +267,13 @@ export interface ParseResultOptions {
   requireRows?: boolean
   /** 必要字段名，用于拼「缺什么」的提示，如 'ASIN / 国家' */
   requiredColumnsHint?: string
+  /**
+   * 文件级失败原因（后端 files[].errorMessage）。0 有效行时优先展示这些具体
+   * 原因：店铺未录入、表头不匹配等都会让文件级解析提前失败，totalRows 同样是
+   * 0，只报通用「空文件」文案会把用户引向错误的排查方向（2026-09-17 用户因
+   * 「店铺未录入」被误导反复重传同一个 Excel，连试 7 次）。
+   */
+  fileErrors?: readonly string[]
   title?: string
 }
 
@@ -333,7 +340,21 @@ export function checkParseResult(
     : ''
 
   if (requireRows && acceptedRows === 0) {
-    if (!totalRows) {
+    const fileErrors = collectDistinctErrors(options.fileErrors)
+    if (fileErrors.length) {
+      const shown = fileErrors.slice(0, 8)
+      issues.push({
+        code: 'parse.file-failed',
+        severity: 'block',
+        message:
+          '以下文件解析未通过，没有可执行的数据行：\n' +
+          shown.map((item) => `· ${item}`).join('\n') +
+          (fileErrors.length > shown.length
+            ? `\n· 另有 ${fileErrors.length - shown.length} 条不同原因`
+            : '') +
+          '\n请按上述原因处理对应文件后重新上传解析。',
+      })
+    } else if (!totalRows) {
       issues.push({
         code: 'parse.empty-file',
         severity: 'block',
@@ -387,6 +408,20 @@ function normalizeCount(value: unknown): number | null {
   return null
 }
 
+/** 汇总一组错误原因：去空、去重（同一原因多条只留一条），保持出现顺序。 */
+export function collectDistinctErrors(values: readonly unknown[] | undefined): string[] {
+  if (!values || !values.length) return []
+  const seen = new Set<string>()
+  const result: string[] = []
+  for (const value of values) {
+    const trimmed = typeof value === 'string' ? value.trim() : ''
+    if (!trimmed || seen.has(trimmed)) continue
+    seen.add(trimmed)
+    result.push(trimmed)
+  }
+  return result
+}
+
 export interface QueuePayloadOptions {
   /** data 下必须存在且非空的字段名 */
   requiredDataKeys?: readonly string[]

frontend-vue/src/shared/utils/submit-guard.ts

@@ -0,0 +1,88 @@
+/**
+ * 提交按钮防连点（纯逻辑 + 全局安装器，供 main.ts 与单测复用）。
+ *
+ * 为什么需要：各工具页的「开始上架 / 启动任务 / 匹配店铺」按钮在提交逻辑跑完后
+ * 立刻恢复可点，用户手快连点就会重复发起。2026-09-17 上架事故里同一店铺被接连
+ * 提交三次、服务端并存多个同店铺任务，客户端并发打开同一店铺时全部失败。
+ *
+ * 语义：
+ * - 冷却按**按钮元素**各自计算（WeakMap），点 A 按钮不会影响 B 按钮；
+ * - 从"首次有效点击"起算，被拦的点击不会把冷却越拖越长（否则用户越急越点不开）；
+ * - 在**捕获阶段**拦截，抢在 Vue 的 @click 之前，被拦的点击不触发任何提交逻辑。
+ */
+
+/** 提交按钮的统一类名（17 个工具页的主按钮都用它） */
+export const SUBMIT_BUTTON_SELECTOR = '.btn-run'
+
+/** 默认冷却时长：够挡住手快连点，又不至于让正常操作感到卡顿 */
+export const DEFAULT_SUBMIT_COOLDOWN_MS = 1500
+
+export interface ClickGate {
+  /** 本次点击是否应被拦下（被拦时不会刷新冷却） */
+  shouldBlock(target: object): boolean
+  /** 解除某个目标的冷却（例如提交失败要允许用户立刻重试） */
+  reset(target: object): void
+}
+
+export function createClickGate(
+  cooldownMs: number = DEFAULT_SUBMIT_COOLDOWN_MS,
+  now: () => number = () => Date.now(),
+): ClickGate {
+  // 非法时长（NaN/0/负数）回落默认值：宁可多挡一下，也不能等同"不设防"
+  const cooldown = Number.isFinite(cooldownMs) && cooldownMs > 0
+    ? cooldownMs
+    : DEFAULT_SUBMIT_COOLDOWN_MS
+
+  const lastClickAt = new WeakMap<object, number>()
+
+  return {
+    shouldBlock(target: object): boolean {
+      const current = now()
+      const last = lastClickAt.get(target)
+      // 用 undefined（而非 0）表示"从未点击过"：哨兵值参与减法会跟时钟起点耦合，
+      // 在 now() 起点较小（测试假时钟/单调时钟）时会误判首次点击为连点
+      if (last !== undefined && current - last < cooldown) {
+        return true
+      }
+      lastClickAt.set(target, current)
+      return false
+    },
+    reset(target: object): void {
+      lastClickAt.delete(target)
+    },
+  }
+}
+
+export interface SubmitGuardOptions {
+  /** 生效的按钮选择器，默认 SUBMIT_BUTTON_SELECTOR */
+  selector?: string
+  cooldownMs?: number
+  now?: () => number
+}
+
+/**
+ * 全局安装防连点（在 main.ts 调用一次即可，覆盖所有工具页的提交按钮）。
+ *
+ * @returns 卸载函数（测试与热更新用）
+ */
+export function installSubmitGuard(options: SubmitGuardOptions = {}): () => void {
+  const selector = options.selector ?? SUBMIT_BUTTON_SELECTOR
+  const gate = createClickGate(options.cooldownMs, options.now)
+
+  const handler = (event: Event): void => {
+    const target = event.target as Element | null
+    const button = target && typeof target.closest === 'function'
+      ? target.closest(selector)
+      : null
+    if (!button) {
+      return
+    }
+    if (gate.shouldBlock(button)) {
+      event.stopImmediatePropagation()
+      event.preventDefault()
+    }
+  }
+
+  document.addEventListener('click', handler, true)
+  return () => document.removeEventListener('click', handler, true)
+}

frontend-vue/tests/dispatch-guard.test.ts

@@ -7,6 +7,7 @@ import {
   checkParseResult,
   checkQueuePayload,
   checkSelectedFiles,
+  collectDistinctErrors,
   extensionOf,
   findUnsafeJsonPaths,
   guardPassed,
@@ -165,6 +166,55 @@ test('test_task_101_dispatch_guard_boundary_parse_result_zero_rows_blocked', ()
   assert.match(emptyFile.message, /没有读到任何数据行/)
 })
 
+test('test_task_101_dispatch_guard_parse_result_file_errors_shown_instead_of_empty_file', () => {
+  // 2026-09-17：店铺未录入后台导致文件级失败，用户被「空文件」文案误导反复重传
+  const result = checkParseResult(parseVo({ totalRows: 0, acceptedRows: 0 }), {
+    fileErrors: ['后台店铺管理中未找到店铺：林清斌，请先添加店铺信息'],
+  })
+  assert.equal(result.ok, false)
+  assert.deepEqual(codes(result), ['parse.file-failed'])
+  assert.match(result.message, /林清斌/)
+  assert.ok(!result.message.includes('没有读到任何数据行'), '有具体原因时不展示通用空文件文案')
+})
+
+test('test_task_101_dispatch_guard_parse_result_file_errors_dedupe_blank_and_limit', () => {
+  const deduped = checkParseResult(parseVo({ totalRows: 0, acceptedRows: 0 }), {
+    fileErrors: ['店铺未匹配', '  ', '店铺未匹配', '', '第二条原因'],
+  })
+  assert.deepEqual(codes(deduped), ['parse.file-failed'])
+  assert.equal(
+    deduped.message.split('\n').filter((line) => line.startsWith('· ')).length,
+    2,
+    '空串与重复原因不应重复展示',
+  )
+
+  const many = checkParseResult(parseVo({ totalRows: 0, acceptedRows: 0 }), {
+    fileErrors: Array.from({ length: 10 }, (_, index) => `原因 ${index}`),
+  })
+  assert.match(many.message, /另有 2 条不同原因/)
+})
+
+test('test_task_101_dispatch_guard_parse_result_blank_file_errors_fallback_to_empty_file', () => {
+  const result = checkParseResult(parseVo({ totalRows: 0, acceptedRows: 0 }), {
+    fileErrors: ['  ', ''],
+  })
+  assert.deepEqual(codes(result), ['parse.empty-file'])
+})
+
+test('test_task_101_dispatch_guard_collect_distinct_errors', () => {
+  assert.deepEqual(collectDistinctErrors(['a', '  ', 'a', '', 'b']), ['a', 'b'], '去空去重且保持顺序')
+  assert.deepEqual(collectDistinctErrors(['  店铺未找到  ']), ['店铺未找到'], '首尾空白裁剪')
+  assert.deepEqual(collectDistinctErrors([]), [])
+  assert.deepEqual(collectDistinctErrors(undefined), [])
+  assert.deepEqual(collectDistinctErrors([null, 7, undefined]), [], '非字符串项忽略')
+})
+
+test('test_task_101_dispatch_guard_parse_result_file_errors_ignored_when_rows_present', () => {
+  const result = checkParseResult(parseVo(), { fileErrors: ['某文件失败'] })
+  assert.equal(result.ok, true)
+  assert.equal(result.needsConfirm, false)
+})
+
 test('test_task_101_dispatch_guard_parse_result_zero_rows_allowed_when_not_required', () => {
   const result = checkParseResult(parseVo({ totalRows: 0, acceptedRows: 0 }), { requireRows: false })
   assert.equal(result.ok, true)

frontend-vue/tests/submit-guard.test.ts

@@ -0,0 +1,198 @@
+/**
+ * 提交按钮防连点（shared/utils/submit-guard）行为测试。
+ *
+ * 背景（2026-09-17 上架事故）：前端「开始上架 / 启动任务」按钮在提交完成后立刻
+ * 恢复可点，手快连点会重复创建任务；同一店铺并存多个任务后，客户端并发打开
+ * 同一店铺时全部失败。这里把冷却逻辑抽成纯函数以便单测。
+ */
+
+import { test } from 'node:test'
+import assert from 'node:assert/strict'
+import {
+  createClickGate,
+  installSubmitGuard,
+  DEFAULT_SUBMIT_COOLDOWN_MS,
+  SUBMIT_BUTTON_SELECTOR,
+} from '../src/shared/utils/submit-guard.ts'
+
+function fakeClock(start = 1_000) {
+  let current = start
+  return {
+    now: () => current,
+    advance: (ms: number) => {
+      current += ms
+    },
+  }
+}
+
+test('默认冷却时长是正数秒级', () => {
+  assert.ok(DEFAULT_SUBMIT_COOLDOWN_MS >= 1000, '冷却至少 1 秒，否则挡不住连点')
+})
+
+test('默认选择器覆盖各工具页的主按钮', () => {
+  assert.equal(SUBMIT_BUTTON_SELECTOR, '.btn-run')
+})
+
+test('首次点击放行', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  assert.equal(gate.shouldBlock({}), false)
+})
+
+test('冷却期内重复点击被拦截', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  clock.advance(100)
+  assert.equal(gate.shouldBlock(button), true)
+  clock.advance(1399)
+  assert.equal(gate.shouldBlock(button), true)
+})
+
+test('冷却结束时（边界）放行', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  clock.advance(1500)
+  assert.equal(gate.shouldBlock(button), false, '恰好到达冷却终点应放行')
+})
+
+test('不同按钮互不影响', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  const startButton = {}
+  const matchButton = {}
+
+  assert.equal(gate.shouldBlock(startButton), false)
+  assert.equal(gate.shouldBlock(matchButton), false, '另一个按钮不该被前一个的冷却波及')
+  clock.advance(100)
+  assert.equal(gate.shouldBlock(startButton), true)
+})
+
+test('自定义冷却时长生效', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(300, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  clock.advance(299)
+  assert.equal(gate.shouldBlock(button), true)
+  clock.advance(2)
+  assert.equal(gate.shouldBlock(button), false)
+})
+
+test('被拦截的点击不会延长冷却', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1000, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  for (let i = 0; i < 5; i += 1) {
+    clock.advance(100)
+    assert.equal(gate.shouldBlock(button), true)
+  }
+  // 从首次点击起算 1000ms 后就该放行，而不是被连点拖长
+  clock.advance(500)
+  assert.equal(gate.shouldBlock(button), false)
+})
+
+test('同一时刻的两次点击只有第一次放行', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  assert.equal(gate.shouldBlock(button), true, '同一 tick 的第二次点击必须被拦')
+})
+
+test('reset 后立即放行', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(1500, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  assert.equal(gate.shouldBlock(button), true)
+  gate.reset(button)
+  assert.equal(gate.shouldBlock(button), false)
+})
+
+test('非法冷却时长回落到默认值', () => {
+  const clock = fakeClock()
+  const gate = createClickGate(Number.NaN, clock.now)
+  const button = {}
+
+  assert.equal(gate.shouldBlock(button), false)
+  clock.advance(DEFAULT_SUBMIT_COOLDOWN_MS - 1)
+  assert.equal(gate.shouldBlock(button), true, 'NaN 应回落为默认冷却而不是立刻放行')
+})
+
+test('全局安装：捕获阶段注册且可卸载', () => {
+  const registered: Array<{ type: string; handler: unknown; capture: boolean }> = []
+  const removed: string[] = []
+  const originalDocument = (globalThis as Record<string, unknown>).document
+  ;(globalThis as Record<string, unknown>).document = {
+    addEventListener: (type: string, handler: unknown, capture: boolean) => {
+      registered.push({ type, handler, capture })
+    },
+    removeEventListener: (type: string) => {
+      removed.push(type)
+    },
+  }
+
+  try {
+    const uninstall = installSubmitGuard({ cooldownMs: 1000, now: () => 0 })
+    assert.equal(registered.length, 1)
+    assert.equal(registered[0].type, 'click')
+    assert.equal(registered[0].capture, true, '必须捕获阶段，否则 Vue 的 @click 已先执行')
+    uninstall()
+    assert.deepEqual(removed, ['click'])
+  } finally {
+    ;(globalThis as Record<string, unknown>).document = originalDocument
+  }
+})
+
+test('全局安装：只拦 .btn-run 的连点，且第二次点击阻断冒泡', () => {
+  const registered: Array<{ handler: (event: unknown) => void }> = []
+  const originalDocument = (globalThis as Record<string, unknown>).document
+  ;(globalThis as Record<string, unknown>).document = {
+    addEventListener: (_type: string, handler: (event: unknown) => void) => {
+      registered.push({ handler })
+    },
+    removeEventListener: () => undefined,
+  }
+
+  try {
+    installSubmitGuard({ cooldownMs: 1000, now: () => 5000 })
+    const handler = registered[0].handler
+
+    const button = { closest: (selector: string) => (selector === '.btn-run' ? button : null) }
+    const elsewhere = { closest: () => null }
+    const makeEvent = (target: unknown) => {
+      const calls: string[] = []
+      return {
+        calls,
+        target,
+        stopImmediatePropagation: () => calls.push('stop'),
+        preventDefault: () => calls.push('prevent'),
+      }
+    }
+
+    const first = makeEvent(button)
+    handler(first)
+    assert.deepEqual(first.calls, [], '首次点击不应被拦')
+
+    const second = makeEvent(button)
+    handler(second)
+    assert.deepEqual(second.calls, ['stop', 'prevent'], '连点必须被拦下')
+
+    const other = makeEvent(elsewhere)
+    handler(other)
+    assert.deepEqual(other.calls, [], '非提交按钮的点击不受影响')
+  } finally {
+    ;(globalThis as Record<string, unknown>).document = originalDocument
+  }
+})