docs: sync business rules and code map mirrors for #241

线上 Wiki 已更新并回读： Business-Rules-and-Glossary afb3eb896e41d9aea0f15ad2682ec70b7a3924ea Architecture-and-Code-Map d547c17924ac53422232ad9d6c55a34c8cd8d63c 镜像由 harness.py sync 从线上重建，sync --check 通过，未反向覆盖 Wiki。 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NTDbDcwbDw1TSAcE6wfh2F
docs: sync agent API contract mirror for #241
2026-09-08 15:24:11 +08:00 · 2026-09-08 15:14:10 +08:00 · 2026-09-08 15:02:51 +08:00 · 2026-09-08 14:41:56 +08:00 · 2026-09-08 10:26:01 +08:00 · 2026-09-08 09:39:59 +08:00
29 changed files with 1378 additions and 272 deletions
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Architecture-and-Code-Map
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Architecture-and-Code-Map.-
-wiki_revision: 9d3b3f2683b5c77f3fd6601057e64c2cda773a51
-synchronized_at: 2026-09-07T09:43:41Z
+wiki_revision: d547c17924ac53422232ad9d6c55a34c8cd8d63c
+synchronized_at: 2026-09-08T07:16:20Z
 <!-- gitea-wiki-mirror:end -->

 # 架构与代码地图
@@ -68,6 +68,8 @@ Android Portal/Agent
 | `pdd_account` | 可选的账号调度引用，只保存名称和状态，不保存凭据 |
 | `purchase_task` | 商品外键和不可变快照、执行模式、状态/租约 guard、价格边界、订单、人工支付复核、物流与回填事实 |
 | `purchase_task_attempt` | `task_id + attempt_id` 幂等执行记录、阶段、规则哈希、固化规格决策和结构化错误 |
+
+> #241 新增：`server/app/goauto/purchase/order_backfill.go` 与 `order_backfill_handler.go` 提供 `POST /api/agent/v1/purchase-tasks/order-backfill`（Device Token 鉴权，逐条事务、逐条结果）；`server/app/goauto/models/purchase_order_guard.go` 在 `PurchaseTask.BeforeSave` 上全局强制订单号唯一，以 `purchase_rule_setting` 单例行串行化订单号分配，避免新增唯一索引迁移；`purchasecontract.ParseAddressSuffix` 为 `AddressSuffix` 的反解，通过回比而非负向前瞻实现（Go RE2 不支持前瞻）。
 | `ai_matching_setting` | 唯一单例的启用状态、OpenAI-compatible Base URL、模型、超时、内部部署明文 API Key 和更新人；仅管理员设置接口可以读取该字段 |

 `collection_task` 的状态仅为 `pending`、`running`、`completed`、`completed_partial`、`failed`。设备身份和心跳表属于 Agent 领取任务的必要基础，不承载 PDD 业务数据。
@@ -344,3 +346,23 @@ PddProductDetailCollector
 - 编辑与停用采用启用状态和 version 条件更新，并与变更审计同事务提交；冲突返回 409。业务执行前先持久化请求审计意图，失败则不执行业务。完成后更新状态；更新失败或进程中断可能留下 status=0，表示结果待核对，不能据此自动重放。
 - 部分既有业务操作人字段使用该密钥最近授权管理员的 ID 兼容现有外键；实际调用方以独立审计的 key_id 为准，不能把业务字段当成人工操作证据。
 - Admin 页面 `web/src/views/goauto/client-keys/index.vue` 复用创建/编辑授权弹窗；菜单位于“采采管理”，仅管理员可见。新追加迁移 `1788798000000_client_api_key.go` 创建两表及管理员菜单，不改 Android。
+
+## 采购规格面板预滑动兼容（#238）
+
+代码基线 `58a6c1c`，Android 0.9.60 / versionCode 73（构建完成不等同于已安装/发布）。`PurchaseRehearsalExecutor.applyPostAction` 对 `openSpecPanel.swipeAfter` 只兼容解析、不执行机械预滑动，`waitAfterMs` 保留；首趟继续原 `probeSpecs` 遍历，第二趟继续原 `selectSpec` 精确查找与容器内有界滚动。其他动作的后置滑动仍沿用既有执行语义，失败不会被统一忽略。
+
+`GoAutoAccessibilityService.swipePurchase` 的失败分类由 `PurchaseSwipeFailureReason` 枚举提供；共享 `swipeNode` 仅增加可选分类回调，不改变手势目标、轨迹、1500ms 回调等待或其他调用者行为。`GoAutoPurchasePanel` 日志经 `AgentForegroundService` 关联 task、attempt、device 与规则快照哈希，新增预滑动跳过/必需滑动失败标量；不记录节点文字、坐标、原始控件树、截图或凭据。
+
+Server/Web、数据库和任务快照不变；旧 APK 仍有预滑动行为，必须更新 Agent 才生效。相关验证在 `PurchaseRehearsalExecutorTest`，Android 全量测试与 APK 构建入口不变。
+
+## SYB 逐页保存与部分成功（#239）
+
+实现绑定 c6a962d；代码已实现不代表当前线上已部署。每页完整明细在外部请求结束后按页事务保存；页回滚不累计明细/新增/覆盖数，已提交页保留。日期局部读取失败继续下一日期，全局数据库/进度/会话/取消故障停止。当天漂移不在一次运行内重扫；后续运行重新扫描并幂等补齐。
+
+同步状态增加 `partial_success`（部分成功，15 字符，复用现有 varchar(16)，无需迁移）。有错误且 created+updated>0 为部分成功；有错误无已提交明细为 failed；完整且无错误为 succeeded（包括无符合店铺的数据）。中断仍为 interrupted，不把中断追认为成功。所有终态沿用活动槽释放规则。
+
+`orderCount` 是已验证页的原始列表读取数量；`detailCount`、`created`、`updated` 为已提交明细及其新增/覆盖数量；`daysProcessed` 是完整通过的日期数，不是已尝试日期数。失败日期/页码/阶段写入现有脱敏限长 errorMessage。部分成功不刷新店铺的完整同步统计。
+
+Web 唯一展示位置为“采集采购 → SYB 同步记录”：列表状态、状态筛选及详情支持部分成功，详情保留已保存数量、错误原因与重新同步补齐提示。定时任务日志只表示异步任务受理，不等于最终业务同步成功。
+
+入口为 `SyncWithShopSnapshot → loadDailyList → importSyncPage`；`server/app/goauto/sybimport/sync_page.go` 封装页事务和提交后计数；`import_handler.go` 判定终态，`sync_run.go` 保存及筛选，Web 复用 `web/src/views/goauto/syb-sync-runs/index.vue`。
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Business-Rules-and-Glossary
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Business-Rules-and-Glossary.-
-wiki_revision: 2a9334053de83a9a0525af074755f67964b48a29
-synchronized_at: 2026-09-07T09:43:46Z
+wiki_revision: afb3eb896e41d9aea0f15ad2682ec70b7a3924ea
+synchronized_at: 2026-09-08T07:16:32Z
 <!-- gitea-wiki-mirror:end -->

 # 业务规则与术语
@@ -58,6 +58,9 @@ synchronized_at: 2026-09-07T09:43:46Z
 - 对采购人员展示的阶段固定为：待人工处理、未关联 PDD、PDD 待采集、PDD 采集中、PDD 采集失败、规格待匹配、可创建采购、已创建任务、采购成功、待人工核对。
 - 主阶段优先级为：待人工核对 → 采购成功 → 已创建任务 → 待人工处理 → 未关联 PDD → PDD 待采集/采集中/采集失败 → 规格待匹配 → 可创建采购。每行只显示一个阶段和对应下一步。
 - “待人工核对”表示订单结果不明确，必须先人工核查并禁止自动重试；“采购成功”表示已取得 PDD 订单号和下单时间，不代表已经支付。
+- 一个 PDD 订单号只能属于一个采购任务，该唯一性在采购任务保存路径上全局强制（#241）。人工处理结果未知、取消及 lifecycle 保存路径撞号时返回 `PURCHASE_ORDER_NUMBER_ALREADY_USED`，提示订单号已属于哪个任务，由采购员人工核对，不静默覆盖原值。
+- 不可逆边界之后的 `order_created` 结果回传是上述规则的例外：此时 PDD 真单已创建，发现订单号已属于其他任务时不回滚、不判失败，而是把任务降级为 `order_result_unknown`，冲突订单号以「读到订单号 X，但该号已属于任务 CG-yy」保存在任务与 attempt 的 `error_message`，`pdd_order_no` 留空以维持唯一性，保留下单时间与不可逆时间，进入既有人工处理结果未知通道。首要目标是保住「真单已存在」这一事实，不制造无记录的真实订单。
+- Agent 可按收货地址后缀 `_cg<任务号>` 批量回填订单号与下单时间（#241）。后缀只承载任务号，请求不含地址全文或收件人信息；只允许回填该设备自己的正式采购任务；页面下单时间优先，缺失时回落该任务的 `irreversible_at` 并标记时间来源，两者皆空则该条失败。
 - 已失败、已取消或演练完成的旧采购任务不单独占用主阶段；当前数据仍满足条件时恢复显示“可创建采购”，旧任务继续在采购管理留痕和按既有规则处理。
 - 未选择处理阶段时，商品列表仍先返回，当前页阶段和采购准备继续异步批量读取且不调用 AI Provider；选择阶段筛选时，服务端必须先对完整查询结果派生并筛选阶段，再计算总数和分页，不能只过滤当前页。

@@ -67,7 +70,7 @@ synchronized_at: 2026-09-07T09:43:46Z
 - 版本迁移会对历史存活店铺回填 `normalized_name = Normalize(display_name)`；回填只改匹配键且可重复执行。若两个存活店铺回填后会得到同一键，迁移必须整体失败并保留原数据，管理员先人工消除歧义后再执行，不能静默合并、删除或改变店铺启用状态。
 - 店铺可以从 SYB 真实货运单列表发现，也允许管理员手工补充。只有管理员可以新增、改名、启停和软删除，采购员等其他角色只读。
 - 没有任何启用店铺时，导入必须在读取凭据、建立会话、验证码 OCR 和任意 SYB 网络请求之前失败，并给出“请先启用店铺”的可读提示。
- 同步必须先拉取并校验当天原始全量列表的总数、分页和唯一 ID，再按本次同步开始时固定的启用店铺快照过滤；过滤不能降低完整性校验的请求范围或容量上限。
+- 同步先预检全范围总数及上限，每页校验原始列表条数、合法 ID 和重复，再按冻结店铺快照获取明细并页事务保存；整日结束核对总数。过滤不能降低完整性校验范围，已保存不能冒充整日完整（#239，c6a962d，已于 2026-09-08 随 d403f3b 部署线上）。
 - 只有列表与明细响应的店铺名都非空且命中启用快照时才允许写入。明细店铺名为空、变化为未启用店铺或无法匹配时跳过，并计入跳过数量。
 - 停用或软删除店铺只影响后续导入，不删除历史 SYB 商品、虾皮商品或任务数据。已有错误导入数据的清理必须先给出精确 SQL 和影响行数，再由用户单独确认。

@@ -447,7 +450,7 @@ synchronized_at: 2026-09-07T09:43:46Z

 ## 客户端密钥与可编辑模块授权（#237）

-以下为提交 `71f7751` 已实现的规则；2026-09-07 本机已迁移并验证管理页面可用，线上尚未部署，真实客户端密钥执行闭环尚未验证。
+以下为提交 `71f7751` 已实现的规则；2026-09-07 本机已迁移并验证管理页面可用，2026-09-08 已随 d403f3b 完成线上迁移与部署，真实客户端密钥执行闭环尚未验证。

 - 仅管理员创建、查看、编辑授权或停用密钥。首版不提供密钥改名、到期、轮换、恢复启用、删除或任意接口授权。
 - 模块选择复用“采集采购/采采管理”现有 12 个业务模块；分组勾选只影响当前子模块，新菜单不会自动获得授权。客户端密钥管理、系统账号权限及支付不在可授权模块中。
@@ -458,3 +461,20 @@ synchronized_at: 2026-09-07T09:43:46Z
 - 客户端与 Admin 登录 JWT、Agent Device Token 独立。响应排除凭据及原始载荷字段；AI 设置只返回 enabled，不开放 Provider 配置读写或连接测试。设备仅开放列表，不开放身份重置、令牌或解锁接口。
 - 执行动作复用既有业务门禁、幂等参数及状态机；客户端采购 batch-retry 沿用 Admin 原有语义，不等同于 Agent 就地 reset。授权重采购、支付复核、取消订单等未列入接口不开放；永久禁止付款。
 - 创建响应丢失时不可找回完整密钥，应核对列表并停用可能已创建的记录，再明确创建新密钥，不能盲目自动重试。完整密钥只在创建结果弹窗内存中显示，关闭或离开页面清空，不写浏览器持久存储。
+
+## 打开采购规格面板后按需滚动（#238）
+
+- Android 0.9.60 / versionCode 73，代码 `58a6c1c` 起，规则 `openSpecPanel.swipeAfter` 保留格式校验与旧快照兼容，但不执行打开面板后的固定次数预滑动；不以“必须滑两次成功”作为进入规格探测/选择的条件。动作后的 `waitAfterMs` 仍生效。
+- 首趟规格探测和第二趟精确选择仍使用各自既有的按需横向/纵向、有界与稳定终止策略。取消预滑动不等于不探测隐藏规格，也不等于只看首屏。目标不存在、歧义、页面证据不足或必要的有界查找失败时仍明确失败。
+- 此调整覆盖所有已经安全识别打开的面板，不再仅特判 NON_SCROLLABLE_CONFIRMATION；不弱化面板验证、精确选中、地址、价格、任务租约、创建订单边界或禁止支付规则。
+- 其他动作的后置滑动沿用原行为，必需滑动失败仍返回 RULE_ACTION_FAILED。旧规则 JSON 不回写、不迁移；原任务 ID、历史 attempt、商品与规格快照不变。旧 APK 行为不变，需升级 Agent；本单未改线上规则或执行 CG68 真机采购。
+
+## SYB 逐页保存与部分成功（#239）
+
+实现绑定 c6a962d；2026-09-08 已随 d403f3b 部署线上，未手动触发真实同步验收；#240 上游尾页超时尚未修复。每页完整明细在外部请求结束后按页事务保存；页回滚不累计明细/新增/覆盖数，已提交页保留。日期局部读取失败继续下一日期，全局数据库/进度/会话/取消故障停止。当天漂移不在一次运行内重扫；后续运行重新扫描并幂等补齐。
+
+同步状态增加 `partial_success`（部分成功，15 字符，复用现有 varchar(16)，无需迁移）。有错误且 created+updated>0 为部分成功；有错误无已提交明细为 failed；完整且无错误为 succeeded（包括无符合店铺的数据）。中断仍为 interrupted，不把中断追认为成功。所有终态沿用活动槽释放规则。
+
+`orderCount` 是已验证页的原始列表读取数量；`detailCount`、`created`、`updated` 为已提交明细及其新增/覆盖数量；`daysProcessed` 是完整通过的日期数，不是已尝试日期数。失败日期/页码/阶段写入现有脱敏限长 errorMessage。部分成功不刷新店铺的完整同步统计。
+
+Web 唯一展示位置为“采集采购 → SYB 同步记录”：列表状态、状态筛选及详情支持部分成功，详情保留已保存数量、错误原因与重新同步补齐提示。定时任务日志只表示异步任务受理，不等于最终业务同步成功。
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Android-Agent-API-Contract
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Android-Agent-API-Contract.-
-wiki_revision: 59853b796dc787d6af4b6ca3a9c1ae3156cc7152
-synchronized_at: 2026-09-07T09:44:13Z
+wiki_revision: 1f5ee1b29c66773fa571d862241b63f02dae283b
+synchronized_at: 2026-09-08T07:09:23Z
 <!-- gitea-wiki-mirror:end -->

 # MVP 共享 API 契约
@@ -77,7 +77,7 @@ PATCH /api/admin/v1/syb-products/{productId}/correction

 `import` 允许已认证的管理员（admin）和采购员（purchaser）调用（#236），仍须通过 Casbin 权限校验；其他角色返回 403。采购员的 POST 权限由既有启动权限对账写入，不需要新增数据库迁移。操作人取已认证 claims，不接受客户端冒名。请求体提交 `dateFrom`、`dateTo` 后创建持久化后台任务并立即以 `202` 返回 `runId` 和 `status=running`；关闭弹窗、刷新或离开页面不影响任务。没有启用店铺时必须在读取凭据、登录、验证码 OCR 和任意 SYB 网络请求之前返回 `422`。任意时刻只能有一条 `running` 记录，内存锁与数据库唯一执行槽共同阻止单进程和跨进程重复导入；冲突时返回正在执行任务的日期范围。

-`sync-runs` 列表支持 `page`、`pageSize`、`status`、`dateFrom`、`dateTo`，详情返回日期范围、状态（`running` / `succeeded` / `failed` / `interrupted`）、处理天数、货运单/明细/新增/覆盖数量、店铺准入与跳过数量、店铺筛选快照哈希、按店铺的 `accepted` / `skipped` 统计、操作人和起止时间。列表和详情对已登录角色只读开放。服务启动时遗留的 `running` 任务改为 `interrupted`；中途失败或中断已经写入的数据保留，重新导入仍按唯一键覆盖。
+`sync-runs` 列表支持 `page`、`pageSize`、`status`、`dateFrom`、`dateTo`，详情返回日期范围、状态（`running` / `succeeded` / `partial_success` / `failed` / `interrupted`）、处理天数、货运单/明细/新增/覆盖数量、店铺准入与跳过数量、店铺筛选快照哈希、按店铺的 `accepted` / `skipped` 统计、操作人和起止时间。列表和详情对已登录角色只读开放。服务启动时遗留的 `running` 任务改为 `interrupted`；中途失败或中断已经写入的数据保留，重新导入仍按唯一键覆盖。

 列表返回结构化字段（`orderCode`、`shopeeItemId`、`productTitle`、`targetColor`、`targetSize`、`quantity`、`unitPriceCent`、`imageUrl`、`parseStatus`、`parseNote`、`manuallyConfirmed`），不含原始 JSON；`keyword` 匹配订单号、虾皮商品ID 或商品标题，`parseStatus` 筛选 `success`/`uncertain`/`failed`。详情额外返回 `rawJson`（原始 `details[]` 元素，未做任何改写）。

@@ -472,7 +472,7 @@ POST /api/agent/v1/tasks/{taskId}/fail
 |---|---:|---:|---:|---:|
 | `openProduct` | 是 | 是 | 是 | 否 |
 | `verifyProduct` | 是 | 是 | 否 | 否 |
-| `openSpecPanel` | 是 | 是 | 是 | 否 |
+| `openSpecPanel` | 是 | 是 | 兼容读取、不执行（0.9.60+，见 #238） | 否 |
 | `selectSpec` | 是 | 是 | 是 | 否 |
 | `setQuantity` | 是 | 是 | 否 | 否 |
 | `verifyUnitPrice` | 是 | 是 | 否 | 否 |
@@ -486,7 +486,7 @@ POST /api/agent/v1/tasks/{taskId}/fail
 - 文字候选按控件文字或内容描述**精确匹配**；候选合并后必须唯一命中。点击动作只允许点击唯一文字节点或其最近的可点击父容器，不允许模糊匹配、猜测相近候选、改点兄弟节点。
 - 动作 `textAliases` 不能包含地址修改、创建/提交订单、订单号或支付相关文字，防止用安全 action 绕过危险动作类型和能力门禁。只读识别字段使用独立校验：允许订单和支付证据，仍拒绝修改地址、收货地址，并沿用各字段声明的数量、长度、去重和空白限制。
 - `waitAfterMs` 表示动作成功后的等待时间，范围为 0～30000 毫秒；省略时为 0。
- `swipeAfter` 表示动作成功后执行一个有限滑动计划。`direction` 只能为 `up` / `down` / `left` / `right`，`count` 为 1～10，`durationMs` 为 100～2000，`intervalMs` 为 0～5000 且省略时为 0。
+- `swipeAfter` 通常表示动作成功后执行一个有限滑动计划；Android 0.9.60+ 的 `openSpecPanel` 例外，只兼容读取而不执行预滑动（见 #238）。`direction` 只能为 `up` / `down` / `left` / `right`，`count` 为 1～10，`durationMs` 为 100～2000，`intervalMs` 为 0～5000 且省略时为 0。
 - 未在矩阵中授权的 action/参数组合、未知字段、空候选和越界值一律拒绝。`updateShippingAddress`、`createOrder`、`readOrderResult` 等正式动作在其独立高风险契约完成前不接受上述参数。
 - 旧的仅含 `actions[].type` 的规则继续有效：候选使用 Agent 内置语义，等待为 0，不执行动作后滑动。
 - 服务端保存创建任务时收到的完整原始规则快照；规则后来更新为规则 B，不会改变已有任务中的规则 A 快照。
@@ -556,7 +556,9 @@ Android #42/#36 使用本地 SQLite 保存恢复与重传所需的任务、attem
 创建订单前先在本地事务保存 `order_submit_started`、不可逆时间、稳定的 `orderSubmitRequestId` 和脱敏最终确认快照，再调用服务端同名接口；只有两侧标记完成并重新校验商品、规格、数量、单价、地址后缀、PDD 包/Activity 与唯一创建订单按钮后，才点击一次。重启时重放同一标记请求并只读核单；无法取得唯一未付款订单号和 PDD 下单时间时提交 `order_result_unknown`。支付文字仅用于识别未付款/离开支付页，永不点击。服务端数据库仍是最终事实来源；双方均不保存原始控件树、截图、PDD 凭据或完整收货地址。

 创建订单后若出现 Android 多微信应用选择器，只读核单器必须同时确认前台包为 `android` / `com.android.intentresolver`、Activity 为白名单 `ChooserActivity` / `ResolverActivity`、页面出现已知系统选择器标题且至少一个候选以“微信”开头，才允许执行一次系统返回；不得点击任何微信候选。若前台已经是精确微信包 `com.tencent.mm`，只读核单器不得点击、输入、登录、支付或强制停止微信，只允许执行一次无参数 PDD 启动 Intent 并等待既有 PDD 任务栈回到前台；`startActivity()` 成功只表示恢复请求已发起。请求后在固定最多 15 次、每次 200ms 的宽限期内允许微信或空窗口短暂残留，不执行点击、返回、输入或滑动；观察到 PDD 后结束宽限，宽限超时、已经观察到 PDD 后再次进入微信或出现稳定未知应用时返回未知结果。随后若前台为 PDD `com.xunmeng.pinduoduo.app_pay.core.PayActivity` 或当前页面出现支付动作文字，最多再返回一次。返回后只读解析唯一订单号和下单时间；选择器或支付页重复出现、白名单不成立、恢复动作重复、无法到达订单详情、结果不唯一或超时均返回未知结果，禁止再次点击创建订单、取消订单或支付。
-`order_result_unknown` 保持订单号和下单时间为空，但允许携带创建订单前已经严格验证的 `actualUnitPriceCent`。Agent 同时提交脱敏稳定失败阶段，服务端只接受白名单并按错误码写入固定提示，不信任或保存页面原文；阶段覆盖空窗口超时、选择器返回失败、微信恢复失败/超时、未知应用、支付页返回失败/重复、订单上下文缺失、订单号缺失/歧义、下单时间缺失/无效和待付款证据缺失。任务与 attempt 保存同一错误阶段，Admin 和 Agent 历史读取数据库最终事实；旧 Agent 未提交阶段时归一为 `PURCHASE_ORDER_RESULT_UNKNOWN`。
+Agent 主动提交 `order_result_unknown` 时保持订单号和下单时间为空，但允许携带创建订单前已经严格验证的 `actualUnitPriceCent`。Agent 同时提交脱敏稳定失败阶段，服务端只接受白名单并按错误码写入固定提示，不信任或保存页面原文；阶段覆盖空窗口超时、选择器返回失败、微信恢复失败/超时、未知应用、支付页返回失败/重复、订单上下文缺失、订单号缺失/歧义、下单时间缺失/无效和待付款证据缺失。任务与 attempt 保存同一错误阶段，Admin 和 Agent 历史读取数据库最终事实；旧 Agent 未提交阶段时归一为 `PURCHASE_ORDER_RESULT_UNKNOWN`。
+
+#241 追加：全局订单号唯一性校验在人工处理结果未知、取消及 lifecycle 保存路径返回 `PURCHASE_ORDER_NUMBER_ALREADY_USED`（HTTP 409、`retryable=false`），提示“订单号已属于任务 CG-任务ID”；批量回填继续使用原有 `PURCHASE_BACKFILL_ORDER_ALREADY_USED`。不可逆边界后的 `order_created` 结果回传为例外：发现该号已属于其他任务时成功受理结果，将 `order_submit_started` 降级为 `order_result_unknown`，不回滚或自动重派。冲突订单号不写入 `pdd_order_no`，而以“读到订单号 X，但该号已属于任务 CG-yy”保存到任务和 attempt 的 `error_message`，两者 `error_code` 均为 `PURCHASE_ORDER_NUMBER_ALREADY_USED`；保留下单时间、不可逆时间及实际单价。attempt 以 failed 结束并保留原始 `order_created` 结果类型、请求 ID 和摘要，重复提交按原幂等协议返回；任务释放租约和运行槽，进入既有人工处理结果未知通道，权限不变。

 | 错误码 | 普通提示 |
 |---|---|
@@ -966,3 +968,95 @@ Agent 携带既有 Token（可已失效）及恢复码重新调用注册接口
 | POST | `/purchase-tasks/batch-retry` | purchase_tasks | purchase |
 | POST | `/purchase-tasks/stock` | purchase_tasks | purchase |
 | GET | `/ai-matching-settings` | ai_matching | read |
+
+### openSpecPanel 后置滑动兼容与诊断（#238）
+
+版本边界：Android 0.9.60 / versionCode 73，代码 `58a6c1c`。不修改 JSON schema、能力标识、任务接口或已有快照哈希。`openSpecPanel.swipeAfter` 仍按 direction/count/durationMs/intervalMs 原约束校验；解析成功后不执行该准备性滑动，`waitAfterMs` 保留。其他动作后置滑动沿用旧执行语义。旧 Server 可继续下发原快照；旧 APK 仍按原策略执行，不能将本契约描述当作旧设备已获得兼容。
+
+规格探测与精确选择自行负责按需有界滚动，原始候选、精确点击和选中复核不变。跳过预滑动不作为规格探测成功或订单创建证据。
+
+本地 `GoAutoPurchasePanel` 脱敏结构日志关联 task、attempt、device、rule（规则 SHA-256），不上传原始页面。新增事件：`postSwipe=skipped;action=openSpecPanel;reason=spec_panel_on_demand;panel=<枚举>`；其他必需滑动失败为 `postSwipe=failed;action=<动作枚举>;direction=<方向枚举>;swipeIndex=<本动作内第几次滑动>;reason=<固定分类>`。
+固定失败分类：unknown、root_unavailable、no_scrollable、invalid_bounds、gesture_unsupported、gesture_rejected、gesture_cancelled、gesture_timeout。日志不含规格值、节点文本、坐标、地址、订单、凭据、原始树或截图；结果错误码仍为 RULE_ACTION_FAILED，现有结果提交字段不变。
+
+## SYB 逐页保存与部分成功（#239）
+
+实现绑定 c6a962d；代码已实现不代表当前线上已部署。每页完整明细在外部请求结束后按页事务保存；页回滚不累计明细/新增/覆盖数，已提交页保留。日期局部读取失败继续下一日期，全局数据库/进度/会话/取消故障停止。当天漂移不在一次运行内重扫；后续运行重新扫描并幂等补齐。
+
+同步状态增加 `partial_success`（部分成功，15 字符，复用现有 varchar(16)，无需迁移）。有错误且 created+updated>0 为部分成功；有错误无已提交明细为 failed；完整且无错误为 succeeded（包括无符合店铺的数据）。中断仍为 interrupted，不把中断追认为成功。所有终态沿用活动槽释放规则。
+
+`orderCount` 是已验证页的原始列表读取数量；`detailCount`、`created`、`updated` 为已提交明细及其新增/覆盖数量；`daysProcessed` 是完整通过的日期数，不是已尝试日期数。失败日期/页码/阶段写入现有脱敏限长 errorMessage。部分成功不刷新店铺的完整同步统计。
+
+Web 唯一展示位置为“采集采购 → SYB 同步记录”：列表状态、状态筛选及详情支持部分成功，详情保留已保存数量、错误原因与重新同步补齐提示。定时任务日志只表示异步任务受理，不等于最终业务同步成功。
+
+## Agent 采购订单批量回填（#241）
+
+本节为 #241 服务端实现契约，2026-09-08 按用户授权直接更新本地镜像；线上 Wiki 与其他长期文档由审核阶段同步。本节不表示已经部署或完成真机验收。
+
+`POST /api/agent/v1/purchase-tasks/order-backfill`
+
+使用 `Authorization: Bearer <Device Token>`，沿用 `RequireAgentHTTPS`、`GOAUTO_ALLOW_INSECURE_AGENT_HTTP` 与既有可信转发协议策略。无需 Admin JWT、claim、start 或 attempt。设备号只从认证读取，请求不得指定 deviceId、地址全文、收件人、手机号或原始控件树；未知 JSON 字段拒绝。此接口只记录已观察到的订单事实，不执行设备动作、创建订单或付款。
+
+请求示例（页面时间先按 Asia/Shanghai 理解，再以带时区 RFC3339/RFC3339Nano 发送）：
+
+```json
+{
+  "requestId": "5826cdda-dcd6-442e-90c3-9b75ba6fb8d8",
+  "items": [
+    {"addressSuffix": "_cg7", "pddOrderNo": "EXAMPLE-ORDER-7", "orderSubmittedAt": "2026-09-08T20:30:00+08:00"},
+    {"addressSuffix": "_cg72", "pddOrderNo": "EXAMPLE-ORDER-72"}
+  ]
+}
+```
+
+- requestId 必须为 UUID；items 为 1～50 条，保持输入顺序；请求体上限沿用 1 MiB。
+- addressSuffix 只接受 `AddressSuffix(id)` 生成的完整字符串。任务号为非零 uint64，拒绝前导零、正负号、空格、尾随文本、多个后缀与溢出；`_cg7` 与 `_cg72` 分别定位任务 7 和 72。
+- pddOrderNo 必填，最多 100 个 Unicode 字符，不接受首尾空白、换行或制表符，不自动裁剪后覆盖旧值。
+- orderSubmittedAt 缺失或 null 时回落任务 irreversible_at；空字符串、无时区文本及非法时间是条目错误，不触发回落。存储统一 UTC。页面值与 irreversible_at 都缺失时该条失败。
+
+有效批次返回 HTTP 200，包括全部条目失败的批次；每条独立事务，失败不撤销其他条目已提交的数据。响应包裹为 `data`，并设 `Cache-Control: no-store`：
+
+```json
+{
+  "data": {
+    "requestId": "5826cdda-dcd6-442e-90c3-9b75ba6fb8d8",
+    "items": [
+      {"index": 0, "taskId": 7, "result": "backfilled", "code": "BACKFILLED", "status": "order_created", "statusVersion": 5, "pddOrderNo": "EXAMPLE-ORDER-7", "orderSubmittedAt": "2026-09-08T12:30:00Z", "timeSource": "page", "retryable": false},
+      {"index": 1, "taskId": 72, "result": "backfilled", "code": "BACKFILLED", "status": "order_created", "statusVersion": 4, "pddOrderNo": "EXAMPLE-ORDER-72", "orderSubmittedAt": "2026-09-08T12:31:00Z", "timeSource": "irreversible_at", "retryable": false}
+    ]
+  }
+}
+```
+
+index 从 0 开始；后缀无法解析时不返回 taskId。result 为 `backfilled`、`already_backfilled`、`conflict` 或 `failed`。已认证设备所属任务可返回提交后的状态、版本、已保存订单号及时间；拒绝条目尽可能返回当前已提交事实。跨设备任务和不存在任务不返回这些业务字段，事务回滚后的内存值绝不作为最终事实返回。
+
+timeSource 说明已保存时间的来源：`page` 为页面值，`irreversible_at` 为估算回落，`existing_unknown` 为原先已创建的历史订单且没有可证明的来源。没有已保存时间时省略 timeSource。客户端必须保留估算标记，不得把回落值或 unknown 宣称为页面真实时间。重复回填不会用新页面时间自动校正旧时间。
+
+| 条目 code | result | 含义 |
+|---|---|---|
+| `BACKFILLED` | backfilled | 本条完成回填 |
+| `ALREADY_BACKFILLED` | already_backfilled | 正式任务已为 order_created 且订单号相同，无写入 |
+| `PURCHASE_BACKFILL_SUFFIX_INVALID` | failed | 非法、非规范、零、溢出或歧义后缀 |
+| `PURCHASE_TASK_NOT_FOUND` | failed | 任务不存在 |
+| `PURCHASE_BACKFILL_DEVICE_MISMATCH` | failed | 未绑定设备或不属于认证设备 |
+| `PURCHASE_STATE_CONFLICT` | failed | 非正式采购，或状态不允许回填 |
+| `PURCHASE_INVALID_REQUEST` | failed | 订单号非法 |
+| `PURCHASE_ORDER_TIME_INVALID` | failed | 提供的页面时间无效 |
+| `PURCHASE_ORDER_TIME_MISSING` | failed | 页面时间与 irreversible_at 均无有效值 |
+| `PURCHASE_BACKFILL_ORDER_CONFLICT` | conflict | 任务已有不同订单号 |
+| `PURCHASE_BACKFILL_BATCH_CONFLICT` | conflict | 同批同任务出现多个不同订单号，该任务所有条目均拒绝 |
+| `PURCHASE_BACKFILL_ORDER_ALREADY_USED` | conflict | 同一订单号已对应其他任务 |
+| `INTERNAL_ERROR` | failed | 数据库失败、死锁等，retryable=true，可安全重放 |
+
+批级 JSON/UUID/数量错误为 HTTP 422 `PURCHASE_INVALID_REQUEST`；鉴权、停用设备和 HTTPS 限制复用既有错误（401 `DEVICE_TOKEN_INVALID`、403 `DEVICE_DISABLED`、426 `HTTPS_REQUIRED`）。批级失败使用既有 `{code,message,retryable}` 包裹，未开始条目写入。
+
+### 状态、幂等与并发
+
+新服务在事务中锁定任务并检查来源状态，仅允许当前设备的 `live + order_result_unknown` 首次写入；`live + order_created` 只在订单号相同时返回已回填。其他状态（包括 running、failed、cancelled 与演练）均拒绝。复用 SetStatus 同步占用字段，同一事务递增 statusVersion、设置 statusChangedAt、清空主任务当前错误及租约；原始 attempt、规则快照、支付与物流、SYB 回写字段不变。
+
+requestId 沿用 UUID 约定，不增加批次表或全局幂等缓存。既有 unknown_resolve_request_id 槽存储 `backfill:<page|irreversible_at>:<由 requestId 和后缀派生的 UUID>`（最多 61 字符），用于任务级关联和保留本功能时间来源。相同任务和订单号即使更换 requestId 也无写入；同 requestId 改内容仍重新执行设备、状态和订单冲突检查，不凭 requestId 直接放行。批内不同任务提交同一订单号时，先成功提交者占用，其余条目返回订单已被使用；已存在的历史重复订单号不自动修复。
+
+订单号尚无唯一索引，本实现不迁移数据库。共享模型保存钩子复用 `purchase_rule_setting.id=1` 行作短事务互斥锁，再以锁定读检查订单号归属，覆盖回填、原人工解除和旧结果提交路径；单例缺失时拒绝写入，数据库死锁时回滚失败事务。原 ResolveUnknown 与 Admin 鉴权代码保持不变。禁止通过跳过模型钩子的直接 SQL 写入宣称具备此保证。
+
+新回填路径禁用包含绑定参数的 SQL 日志，不记录请求正文、订单号、地址或原始树；任务号和认证设备号沿既有任务关联不可变 ruleSnapshot。此接口未新增日志载荷或任务/attempt。
+
+本地测试覆盖事务回滚、并发服务调用和旧写入路径，使用 SQLite；MySQL 8.4 多连接/多进程的实际行锁、生产数据和真机端到端回填尚待环境验收，不以单元测试替代。
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: SYB-ERP-Interface-Contract
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/SYB-ERP-Interface-Contract.-
-wiki_revision: a4f4ab200af052bab7ffbabe267238528bcd7cf9
-synchronized_at: 2026-09-07T07:02:57Z
+wiki_revision: 214485db630141aeb03d4b49b22a65e572fb592a
+synchronized_at: 2026-09-08T02:24:10Z
 <!-- gitea-wiki-mirror:end -->

 # 12 顺云宝（SYB）ERP 接口契约
@@ -220,22 +220,13 @@ Admin 默认 `max_matches = 10000`，可以在配置中调整；上限针对整
 有限重试：单次 HTTP 总超时 60 秒，最多执行 3 次，重试前分别等待 1 秒、2 秒，等待须
 响应 context 取消。HTTP 401/403、明确会话失效、业务失败、接口数据完整性错误和本地
 校验失败不得重试；登录、验证码、单件码写入和任何回填请求也不得使用该机制。重试
-耗尽后返回最后一次错误，外层继续保留日期、页码和已获取数量上下文并将同步标为失败。
+耗尽后返回最后一次错误，外层保留日期、页码和已获取数量上下文，按最终已保存成果将同步标为失败或部分成功。

-今天的货运单会在同步期间持续新增。只有 UTC+8 下的今天发生上述快照漂移时，
-允许只重试今天的列表分页，最多 3 次；已经完成的历史日期不得重复拉取，每次尝试
-也必须使用独立 ID 集合。第三次仍不稳定时，可以对最后一次取得的合法唯一 ID
-读取完整明细并按既有 upsert 保存，但本次同步仍记为失败、明确提示当天未形成
-稳定快照且不推进游标，下一次继续覆盖今天。任何尝试都不得突破 `max_matches`；
-网络/业务错误、非法 ID 或不完整明细不属于可放宽的快照漂移。
-`[必须，#235]` 当天跨页重复 ID 纳入上述最多 3 次列表快照尝试（含首次），
-不增加另一层重试次数。发现跨页重复后丢弃本次列表，从预检总数和第一页重新开始，
-使用全新 ID 集合；最后一次仍重复时直接失败，不得去重后按成功或降级数据保存。
-已经完成的历史日期保持其已有结果，不重复拉取；历史日期重复不适用此恢复。
-每页先检查非法 ID 和页内重复，再检查跨页重叠；同页同时存在页内重复和跨页重叠时
-仍作为硬错误停止。原有总数漂移/短页的合法唯一列表降级保存条件保持不变。
-重复诊断只记录日期、当天尝试序号、首次/当前页码与行号、start、pageSize、
-expectedTotal 和已获取唯一数量，不记录真实重复 ID、原始响应或个人数据。
+自 #239（实现提交 c6a962d，已于 2026-09-08 随 d403f3b 部署线上）起，改为按页验证和保存：每页先验证条数、合法 ID、页内/跨页重复，再按冻结店铺快照获取并验证全部明细；外部请求完成后才开启页事务。页内任一入库失败回滚整页，已提交的前页保留，计数在事务提交后累计。
+
+当天和历史日期统一处理：分页/明细失败或最终总数漂移时停止该日期并继续后续日期，不在同次运行中重新扫描当天，以避免重复写入和计数。数据库故障、进度持久化失败、明确会话失效、上下文取消或总任务超时停止整个范围。下一次人工或定时同步重新扫描日期，按 (order_code, detail_id) 幂等覆盖并保留人工确认。跨页重复不去重后冒充完整数据；最终日期完整性校验仍覆盖所有店铺。此流程替代此前 #235 的当天三次整日快照重扫。
+
+重复诊断只记录日期、首次/当前页码和行号、start、pageSize、expectedTotal、已获取唯一数量，不记录真实重复 ID、原始响应或个人数据。

 ### 4.4 统一日期范围同步与覆盖游标

@@ -258,7 +249,7 @@ GoAuto 同步记录页的立即同步允许管理员和采购员（purchaser）
 或超过 `max_matches` 时不推进游标。

 `[必须]` 每批明细响应必须与请求的货运单 ID 一一对应。缺失、重复、出现未请求
-ID，或某张货运单返回空商品明细，都视为不完整并停止同步；已经写入的幂等数据
+ID，或某张货运单返回空商品明细，都视为不完整并停止当前日期，继续后续日期；已经写入的幂等数据
 可以保留，但只有所有日期全部成功才推进游标。

 `[必须]` 登录和验证码只是同步前置步骤。日期范围经过自动 OCR 降级、手工
@@ -500,9 +491,9 @@ POST /am/stock/detail/updateDetailCode?t=0&id={stockID}&detailId={detailID}&code
 > 以下「店铺准入」已由 GoAuto #49 采纳并实现；店铺规范化还包括全角/半角统一和忽略大小写。

 `[必须]` **同步先校验原始全量，再做店铺准入。** 顺序固定为：按日期查询原始总数
-并执行单次容量熔断 → 拉完当天原始列表并核对分页前后总数、页长和唯一 ID → 按
+并执行单次容量熔断 → 逐页核对页长和唯一 ID，整日结束复核总数 → 按
 `shopName` 去除首尾空白后与启用店铺精确匹配 → 只为接受的货运单请求明细和入库。
-不能先过滤再做完整性校验，否则非目标店铺的分页漂移会被掩盖。
+店铺过滤只决定明细获取和入库，不能减少原始列表完整性校验范围；已保存不代表整日完整。

 `[必须]` 同步开始时只读取一次启用店铺，整次运行使用同一个快照。列表允许但明细
 响应中的 `shopName` 变为空或非允许店铺时再次拦截。没有启用店铺时在会话/OCR/
@@ -657,3 +648,13 @@ settings:
 - 客户端实现：`server/app/goauto/sybclient/`
 - 落库与解析：`server/app/goauto/sybimport/`
 - 相关工单：[#48 客户端移植](https://git.ilapage.cn/OPC/goauto/issues/48)、[#41 SYB 货运单商品导入](https://git.ilapage.cn/OPC/goauto/issues/41)、[#37 物流调度与货运宝回填](https://git.ilapage.cn/OPC/goauto/issues/37)
+
+## SYB 逐页保存与部分成功（#239）
+
+实现绑定 c6a962d；2026-09-08 已随 d403f3b 部署线上，未手动触发真实同步验收；#240 上游尾页超时尚未修复。每页完整明细在外部请求结束后按页事务保存；页回滚不累计明细/新增/覆盖数，已提交页保留。日期局部读取失败继续下一日期，全局数据库/进度/会话/取消故障停止。当天漂移不在一次运行内重扫；后续运行重新扫描并幂等补齐。
+
+同步状态增加 `partial_success`（部分成功，15 字符，复用现有 varchar(16)，无需迁移）。有错误且 created+updated>0 为部分成功；有错误无已提交明细为 failed；完整且无错误为 succeeded（包括无符合店铺的数据）。中断仍为 interrupted，不把中断追认为成功。所有终态沿用活动槽释放规则。
+
+`orderCount` 是已验证页的原始列表读取数量；`detailCount`、`created`、`updated` 为已提交明细及其新增/覆盖数量；`daysProcessed` 是完整通过的日期数，不是已尝试日期数。失败日期/页码/阶段写入现有脱敏限长 errorMessage。部分成功不刷新店铺的完整同步统计。
+
+Web 唯一展示位置为“采集采购 → SYB 同步记录”：列表状态、状态筛选及详情支持部分成功，详情保留已保存数量、错误原因与重新同步补齐提示。定时任务日志只表示异步任务受理，不等于最终业务同步成功。
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Deployment-and-Operations
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Deployment-and-Operations.-
-wiki_revision: f951dbc8b6a555cbf8f44cda073910406ba55191
-synchronized_at: 2026-09-07T09:43:56Z
+wiki_revision: df033d06fd94a4b02a447a27ced8d711521342f3
+synchronized_at: 2026-09-08T02:23:08Z
 <!-- gitea-wiki-mirror:end -->

 # 部署与运维
@@ -73,10 +73,10 @@ Provider 故障日志只允许记录调用关联 ID、操作类型、耗时、

 ## 客户端密钥部署与验证（#237）

-实现基线 `71f7751`；2026-09-07 已按用户授权完成本机 MySQL 迁移、管理员菜单写入和 Server/Web 构建重启；管理页面 HTTP 列表与模块加载已验证。线上仍未部署。
+实现基线 `71f7751`；2026-09-07 已按用户授权完成本机 MySQL 迁移、管理员菜单写入和 Server/Web 构建重启；管理页面 HTTP 列表与模块加载已验证。2026-09-08 经用户授权，线上已发布 Server/Web 基线 `d403f3b`，执行迁移 `1788798000000` 并重启 GoAuto/Nginx；迁移记录、两张密钥表、仅管理员菜单关联已回读。HTTP 页面与健康检查通过；未登录管理请求 HTTP 200、业务码 401。真实密钥创建及客户端业务读写闭环尚未验证。

 - 发布前须单独授权追加迁移 `server/cmd/migrate/migration/version-local/1788798000000_client_api_key.go`，按既有迁移流程创建 client_api_key、client_api_key_audit 和“采采管理/客户端密钥”管理员菜单。前置父菜单必须存在；不应以赋予普通用户管理员角色代替迁移或权限核验。
- 用户于 2026-09-07 明确确认默认兼容 HTTP/HTTPS、不设开关并接受明文风险；部署本版本并执行迁移后，现有 `http://185.216.248.75:9527` 可以使用客户端密钥管理及客户端 API。本机已部署验证，不能据此宣称线上已经可用。HTTP 会明文传输密钥和业务数据，仍建议使用 HTTPS。
+- 用户于 2026-09-07 明确确认默认兼容 HTTP/HTTPS、不设开关并接受明文风险；部署本版本并执行迁移后，现有 `http://185.216.248.75:9527` 可以使用客户端密钥管理及客户端 API。2026-09-08 线上部署及未登录拒绝检查已通过，真实密钥读写验收仍待进行。HTTP 会明文传输密钥和业务数据，仍建议使用 HTTPS。
 - 客户端密钥功能不依赖 GOAUTO_TRUST_FORWARDED_PROTO、X-Forwarded-Proto 或 Agent HTTP 例外。既有其他路由的协议和代理配置保持不变；不伪造协议头，不新增明文放行开关。
 - 代理、APM、应用日志均不得记录 Authorization、创建响应 secret 或原始业务载荷。应用对两类客户端密钥路由跳过旧请求/响应正文日志，使用专用元数据审计；实际代理日志脱敏仍须部署验收。
 - 请求审计 status=0 可能表示在途、进程中断或结果审计更新失败；先按请求关联号核对业务结果，不自动重试采购、采集、同步等操作。停用阻止后续认证，不保证取消已开始的业务操作。
@@ -92,4 +92,4 @@ Provider 故障日志只允许记录调用关联 ID、操作类型、耗时、
 - 真实迁移必须单独授权并先确认唯一待执行版本；常驻 API 加 `-SkipMigration`，日常重启不自动执行未来待审核迁移。#237 迁移 `1788798000000_client_api_key.go` 已执行，sys_migration 记录 `1788798000000`、两张密钥表及管理员菜单已回读；其他角色未新增菜单关联。任务启停状态未改。
 - 范围明确的服务控制：`D:/supervisor/supervisord.exe -c D:/supervisor/supervisord.conf ctl status goauto-admin-api goauto-admin-ui`，启动/停止/重启将 status 分别替换为 start/stop/restart。不得为了 GoAuto 重启整个 Supervisor 或其他项目。配置内容变化后需重新读取配置；本次调用 `supervisor.reloadConfig`，再对上述两个程序定向 start，已通过进程命令行核对新目录。
 - 日志：`D:/supervisor/logs/goauto-admin-api.log`、`D:/supervisor/logs/goauto-admin-ui.log`；对外分享只能保留脱敏结构摘要。迁移输出不得暴露凭据或业务原文。
- 管理员刷新页面后可进入 `http://127.0.0.1:9527/#/client-keys/index`；菜单缓存未更新时重新登录。已验证列表空态、创建弹窗加载 12 模块及 HTTP 风险提示；未实际创建密钥，真实客户端读写及停用闭环仍待范围明确的验证。线上 GoAuto/Nginx 未重启或发布。
+- 管理员刷新页面后可进入 `http://127.0.0.1:9527/#/client-keys/index`；菜单缓存未更新时重新登录。已验证列表空态、创建弹窗加载 12 模块及 HTTP 风险提示；未实际创建密钥，真实客户端读写及停用闭环仍待范围明确的验证。本节为 2026-09-07 本机验证记录；线上已于 2026-09-08 另行授权发布，见上节。
@@ -202,7 +202,15 @@ func (task *PurchaseTask) BeforeCreate(_ *gorm.DB) error {
 	return task.syncPurchaseGuardSlots()
 }

-func (task *PurchaseTask) BeforeSave(_ *gorm.DB) error { return task.syncPurchaseGuardSlots() }
+func (task *PurchaseTask) BeforeSave(tx *gorm.DB) error {
+	if err := task.syncPurchaseGuardSlots(); err != nil {
+		return err
+	}
+	if task.PDDOrderNo != nil && *task.PDDOrderNo != "" {
+		return CheckPurchaseOrderNumber(tx, task.ID, *task.PDDOrderNo)
+	}
+	return nil
+}

 func (task *PurchaseTask) SetStatus(status string) error {
 	task.Status = status
@@ -0,0 +1,41 @@
+package models
+
+import (
+	"errors"
+	"fmt"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+var ErrPurchaseOrderNumberUsed = errors.New("purchase order number belongs to another task")
+
+type PurchaseOrderNumberUsedError struct {
+	TaskID uint64
+}
+
+func (e *PurchaseOrderNumberUsedError) Error() string {
+	return fmt.Sprintf("订单号已属于任务 CG-%d", e.TaskID)
+}
+
+func (e *PurchaseOrderNumberUsedError) Unwrap() error { return ErrPurchaseOrderNumberUsed }
+
+// CheckPurchaseOrderNumber must run inside the caller's write transaction.
+// The existing singleton setting row serializes order assignments across
+// processes, including an absent order number, without relying on gap locks or
+// a new schema constraint. Locking reads see the latest committed assignment.
+// A missing singleton fails closed. Deadlocks roll back the losing transaction.
+func CheckPurchaseOrderNumber(tx *gorm.DB, taskID uint64, orderNo string) error {
+	var setting PurchaseRuleSetting
+	if err := tx.Session(&gorm.Session{NewDB: true}).Clauses(clause.Locking{Strength: "UPDATE"}).First(&setting, 1).Error; err != nil {
+		return err
+	}
+	var others []PurchaseTask
+	if err := tx.Session(&gorm.Session{NewDB: true}).Select("id").Clauses(clause.Locking{Strength: "UPDATE"}).Where("pdd_order_no = ? AND id <> ?", orderNo, taskID).Find(&others).Error; err != nil {
+		return err
+	}
+	if len(others) != 0 {
+		return &PurchaseOrderNumberUsedError{TaskID: others[0].ID}
+	}
+	return nil
+}
@@ -542,7 +542,7 @@ func writeError(c *gin.Context, err error) {
 		status = http.StatusForbidden
 	case CodeTaskNotFound:
 		status = http.StatusNotFound
-	case CodeStateConflict, CodeCapabilityMismatch, CodeDeviceBusy, CodeTaskClaimed, CodeLeaseExpired, CodeMappingRequired, CodeResultConflict, CodeRePurchaseRequired:
+	case CodeStateConflict, CodeCapabilityMismatch, CodeDeviceBusy, CodeTaskClaimed, CodeLeaseExpired, CodeMappingRequired, CodeResultConflict, CodeRePurchaseRequired, CodeOrderNumberUsed:
 		status = http.StatusConflict
 	}
 	c.JSON(status, gin.H{"code": code, "message": msg, "retryable": retryable})
@@ -6,6 +6,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"strings"
 	"time"

@@ -378,6 +379,22 @@ func (s *Service) SubmitResult(ctx context.Context, taskID uint64, req ResultReq
 			t.PDDOrderNo = &req.PDDOrderNo
 			t.OrderSubmittedAt = req.OrderSubmittedAt
 			t.ActualUnitPriceCent = req.ActualUnitPriceCent
+			// Keep the assignment lock until commit. A conflicting observation
+			// after the irreversible boundary must reach manual resolution,
+			// not roll back the result or claim another task's order number.
+			if e := models.CheckPurchaseOrderNumber(tx, t.ID, req.PDDOrderNo); e != nil {
+				var conflict *models.PurchaseOrderNumberUsedError
+				if !errors.As(e, &conflict) {
+					return TaskPayload{}, conflictOrInternal(e)
+				}
+				next = models.PurchaseTaskStatusOrderResultUnknown
+				t.PDDOrderNo = nil
+				failureCode := CodeOrderNumberUsed
+				message := fmt.Sprintf("读到订单号 %s，但该号已属于任务 %s", req.PDDOrderNo, taskNumber(conflict.TaskID))
+				t.ErrorCode, t.ErrorMessage = &failureCode, &message
+				a.Status = models.PurchaseAttemptStatusFailed
+				a.ErrorCode, a.ErrorMessage = &failureCode, &message
+			}
 		case "order_result_unknown":
 			if t.ExecutionMode != models.PurchaseExecutionModeLive || t.Status != models.PurchaseTaskStatusOrderSubmitStarted {
 				return TaskPayload{}, fail(CodeStateConflict, "当前任务不能标记订单结果未知")
@@ -525,7 +542,10 @@ func (s *Service) applySpecDecision(ctx context.Context, taskID uint64, req Spec
 		}
 		t.StatusVersion++
 		t.StatusChangedAt = s.Now()
-		return tx.Save(&t).Error
+		if e := tx.Save(&t).Error; e != nil {
+			return conflictOrInternal(e)
+		}
+		return nil
 	})
 	return t, replayed, err
 }
@@ -728,6 +748,10 @@ func purchaseNotFound(err error) error {
 	return internal(err)
 }
 func conflictOrInternal(err error) error {
+	var conflict *models.PurchaseOrderNumberUsedError
+	if errors.As(err, &conflict) {
+		return fail(CodeOrderNumberUsed, conflict.Error())
+	}
 	if isDuplicate(err) {
 		return fail(CodeDeviceBusy, "设备或拼多多账号已有运行任务")
 	}
@@ -80,7 +80,10 @@ func (s *Service) SelectWriteback(ctx context.Context, id uint64, req ManualRequ
 		}
 		out.WritebackStatus = models.PurchaseWritebackStatusPending
 		out.WritebackSelectRequestID = &req.RequestID
-		return tx.Save(&out).Error
+		if e := tx.Save(&out).Error; e != nil {
+			return conflictOrInternal(e)
+		}
+		return nil
 	})
 	return out, replayed, err
 }
@@ -166,7 +169,10 @@ func (s *Service) manual(ctx context.Context, id uint64, req ManualRequest, appl
 				return internal(e)
 			}
 		}
-		return tx.Save(&out).Error
+		if e := tx.Save(&out).Error; e != nil {
+			return conflictOrInternal(e)
+		}
+		return nil
 	})
 	return out, replayed, err
 }
@@ -0,0 +1,202 @@
+package purchase
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"go-admin/app/goauto/device"
+	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/purchasecontract"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"gorm.io/gorm/logger"
+)
+
+const (
+	MaxOrderBackfillItems     = 50
+	CodeBackfillSuffix        = "PURCHASE_BACKFILL_SUFFIX_INVALID"
+	CodeBackfillDevice        = "PURCHASE_BACKFILL_DEVICE_MISMATCH"
+	CodeBackfillOrderConflict = "PURCHASE_BACKFILL_ORDER_CONFLICT"
+	CodeBackfillBatchConflict = "PURCHASE_BACKFILL_BATCH_CONFLICT"
+	CodeBackfillOrderUsed     = "PURCHASE_BACKFILL_ORDER_ALREADY_USED"
+)
+
+type OrderBackfillRequest struct {
+	RequestID string              `json:"requestId"`
+	Items     []OrderBackfillItem `json:"items"`
+}
+
+type OrderBackfillItem struct {
+	AddressSuffix string `json:"addressSuffix"`
+	PDDOrderNo    string `json:"pddOrderNo"`
+	// A string keeps an invalid page timestamp local to this item.
+	OrderSubmittedAt *string `json:"orderSubmittedAt,omitempty"`
+}
+
+type OrderBackfillResult struct {
+	Index            int        `json:"index"`
+	TaskID           uint64     `json:"taskId,omitempty"`
+	Result           string     `json:"result"`
+	Code             string     `json:"code"`
+	Status           string     `json:"status,omitempty"`
+	StatusVersion    uint64     `json:"statusVersion,omitempty"`
+	PDDOrderNo       *string    `json:"pddOrderNo,omitempty"`
+	OrderSubmittedAt *time.Time `json:"orderSubmittedAt,omitempty"`
+	TimeSource       string     `json:"timeSource,omitempty"`
+	Retryable        bool       `json:"retryable"`
+}
+
+type OrderBackfillResponse struct {
+	RequestID string                `json:"requestId"`
+	Items     []OrderBackfillResult `json:"items"`
+}
+
+func (s *Service) BackfillOrders(ctx context.Context, req OrderBackfillRequest, token string) (OrderBackfillResponse, error) {
+	out := OrderBackfillResponse{RequestID: req.RequestID}
+	d, err := device.NewService(s.DB).Authenticate(ctx, token)
+	if err != nil {
+		return out, err
+	}
+	if _, err := uuid.Parse(req.RequestID); err != nil || len(req.Items) == 0 || len(req.Items) > MaxOrderBackfillItems {
+		return out, fail(CodeInvalidRequest, "requestId 必须为 UUID，items 必须包含 1 到 50 条")
+	}
+	ids := make([]uint64, len(req.Items))
+	orders := make(map[uint64]string)
+	conflicts := make(map[uint64]bool)
+	for i, item := range req.Items {
+		id, err := purchasecontract.ParseAddressSuffix(item.AddressSuffix)
+		if err != nil {
+			continue
+		}
+		ids[i] = id
+		if previous, ok := orders[id]; ok && previous != item.PDDOrderNo {
+			conflicts[id] = true
+		}
+		orders[id] = item.PDDOrderNo
+	}
+	out.Items = make([]OrderBackfillResult, len(req.Items))
+	for i, item := range req.Items {
+		r := OrderBackfillResult{Index: i, TaskID: ids[i], Result: "failed"}
+		if ids[i] == 0 {
+			r.Code = CodeBackfillSuffix
+		} else {
+			r = s.backfillOrder(ctx, d.ID, ids[i], req.RequestID, item, conflicts[ids[i]])
+			r.Index = i
+		}
+		out.Items[i] = r
+	}
+	return out, nil
+}
+
+func (s *Service) backfillOrder(ctx context.Context, deviceID, taskID uint64, requestID string, item OrderBackfillItem, batchConflict bool) OrderBackfillResult {
+	r := OrderBackfillResult{TaskID: taskID, Result: "failed"}
+	var task models.PurchaseTask
+	// SQL errors must not print bound order numbers or the task's address snapshot.
+	db := s.DB.Session(&gorm.Session{Logger: logger.Default.LogMode(logger.Silent)}).WithContext(ctx)
+	err := db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&task, taskID).Error; err != nil {
+			return purchaseNotFound(err)
+		}
+		if task.DeviceID == nil || *task.DeviceID != deviceID {
+			return fail(CodeBackfillDevice, "任务不属于当前设备")
+		}
+		if batchConflict {
+			return fail(CodeBackfillBatchConflict, "同批任务有不同订单号")
+		}
+		if task.ExecutionMode != models.PurchaseExecutionModeLive || (task.Status != models.PurchaseTaskStatusOrderResultUnknown && task.Status != models.PurchaseTaskStatusOrderCreated) {
+			return fail(CodeStateConflict, "当前任务不允许回填")
+		}
+		if item.PDDOrderNo == "" || strings.TrimSpace(item.PDDOrderNo) != item.PDDOrderNo || utf8.RuneCountInString(item.PDDOrderNo) > 100 || strings.ContainsAny(item.PDDOrderNo, "\r\n\t") {
+			return fail(CodeInvalidRequest, "订单号无效")
+		}
+		if task.PDDOrderNo != nil && *task.PDDOrderNo != "" && *task.PDDOrderNo != item.PDDOrderNo {
+			return fail(CodeBackfillOrderConflict, "已有不同订单号")
+		}
+		// The shared model guard also protects manual resolution and late results.
+		if err := models.CheckPurchaseOrderNumber(tx, taskID, item.PDDOrderNo); err != nil {
+			return err
+		}
+		if task.Status == models.PurchaseTaskStatusOrderCreated {
+			if task.PDDOrderNo == nil || *task.PDDOrderNo != item.PDDOrderNo {
+				return fail(CodeStateConflict, "已创建订单缺少匹配订单号")
+			}
+			r.Result, r.Code = "already_backfilled", "ALREADY_BACKFILLED"
+			return nil
+		}
+		var submitted time.Time
+		source := "page"
+		if item.OrderSubmittedAt != nil {
+			var err error
+			submitted, err = time.Parse(time.RFC3339Nano, *item.OrderSubmittedAt)
+			if err != nil || submitted.IsZero() || submitted.Year() < 1000 || submitted.Year() > 9999 {
+				return fail(CodeOrderTimeInvalid, "下单时间必须为 RFC3339")
+			}
+		} else {
+			if task.IrreversibleAt == nil || task.IrreversibleAt.IsZero() {
+				return fail(CodeOrderTimeMissing, "下单时间和不可逆时间均缺失")
+			}
+			submitted, source = *task.IrreversibleAt, "irreversible_at"
+		}
+		submitted = submitted.UTC()
+		task.PDDOrderNo, task.OrderSubmittedAt = &item.PDDOrderNo, &submitted
+		if err := task.SetStatus(models.PurchaseTaskStatusOrderCreated); err != nil {
+			return internal(err)
+		}
+		task.StatusVersion++
+		task.StatusChangedAt = s.Now()
+		task.ErrorCode, task.ErrorMessage = nil, nil
+		task.LeaseExpiresAt = nil
+		// Reuse the existing resolution request slot. Scope a batch UUID to a
+		// task, and retain provenance without a schema change or replay cache.
+		marker := "backfill:" + source + ":" + uuid.NewSHA1(uuid.NameSpaceOID, []byte(requestID+":"+item.AddressSuffix)).String()
+		task.UnknownResolveRequestID = &marker
+		if err := tx.Save(&task).Error; err != nil {
+			return err
+		}
+		r.Result, r.Code = "backfilled", "BACKFILLED"
+		return nil
+	})
+	if err != nil {
+		r.Result, r.Code = "failed", CodeInternal
+		r.Retryable = true
+		var se *ServiceError
+		if errors.As(err, &se) {
+			r.Code, r.Retryable = se.Code, se.Retryable
+		}
+		if errors.Is(err, models.ErrPurchaseOrderNumberUsed) {
+			r.Code, r.Retryable = CodeBackfillOrderUsed, false
+		}
+		if r.Code == CodeBackfillBatchConflict || r.Code == CodeBackfillOrderConflict || r.Code == CodeBackfillOrderUsed {
+			r.Result = "conflict"
+		}
+	}
+	// Return only this device's committed facts, including on a rejected item.
+	// Never return in-memory changes from a rolled back transaction.
+	saved := task
+	readable := err == nil
+	if !readable {
+		saved = models.PurchaseTask{}
+		readable = db.Where("id = ? AND device_id = ?", taskID, deviceID).First(&saved).Error == nil
+	}
+	if readable {
+		r.Status, r.StatusVersion = saved.Status, saved.StatusVersion
+		r.PDDOrderNo, r.OrderSubmittedAt = saved.PDDOrderNo, saved.OrderSubmittedAt
+		if saved.OrderSubmittedAt != nil {
+			r.TimeSource = "existing_unknown"
+			if saved.UnknownResolveRequestID != nil {
+				if strings.HasPrefix(*saved.UnknownResolveRequestID, "backfill:page:") {
+					r.TimeSource = "page"
+				}
+				if strings.HasPrefix(*saved.UnknownResolveRequestID, "backfill:irreversible_at:") {
+					r.TimeSource = "irreversible_at"
+				}
+			}
+		}
+	}
+	return r
+}
@@ -0,0 +1,25 @@
+package purchase
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func (h Handler) BackfillOrders(c *gin.Context) {
+	var req OrderBackfillRequest
+	if !decode(c, &req) {
+		return
+	}
+	s, ok := h.service(c)
+	if !ok {
+		return
+	}
+	out, err := s.BackfillOrders(c.Request.Context(), req, bearer(c.GetHeader("Authorization")))
+	if err != nil {
+		writeError(c, err)
+		return
+	}
+	c.Header("Cache-Control", "no-store")
+	c.JSON(http.StatusOK, gin.H{"data": out})
+}
@@ -0,0 +1,498 @@
+package purchase
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"reflect"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"go-admin/app/goauto/device"
+	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/purchasecontract"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+func backfillTask(t *testing.T, db *gorm.DB, f fixture, status string) models.PurchaseTask {
+	t.Helper()
+	now := testService(db).Now()
+	task := models.PurchaseTask{TaskType: models.PurchaseTaskTypeStock, ExecutionMode: models.PurchaseExecutionModeLive,
+		Status: status, DeviceID: &f.device.ID, PDDProductID: f.pdd.ID, Quantity: 1, Currency: "CNY",
+		CreateRequestID: uuid.NewString(), RuleSnapshot: string(purchasecontract.DefaultLiveRule()),
+		SpecDecisionSnapshot: `{}`, RequiredCapabilitiesJSON: `[]`, IrreversibleAt: &now,
+		ErrorCode: strptr("ORIGINAL_ERROR"), ErrorMessage: strptr("original failure")}
+	if err := db.Create(&task).Error; err != nil {
+		t.Fatal(err)
+	}
+	return task
+}
+
+func strptr(s string) *string { return &s }
+
+func backfillItem(id uint64, order string) OrderBackfillItem {
+	return OrderBackfillItem{AddressSuffix: purchasecontract.AddressSuffix(id), PDDOrderNo: order}
+}
+
+func runBackfill(t *testing.T, s *Service, token, requestID string, items ...OrderBackfillItem) []OrderBackfillResult {
+	t.Helper()
+	out, err := s.BackfillOrders(context.Background(), OrderBackfillRequest{RequestID: requestID, Items: items}, token)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(out.Items) != len(items) || out.RequestID != requestID {
+		t.Fatalf("bad envelope: %+v", out)
+	}
+	return out.Items
+}
+
+func loadBackfillTask(t *testing.T, db *gorm.DB, id uint64) models.PurchaseTask {
+	t.Helper()
+	var task models.PurchaseTask
+	if err := db.First(&task, id).Error; err != nil {
+		t.Fatal(err)
+	}
+	return task
+}
+
+func TestOrderBackfillMixedBatchAndReplay(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	a := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	a.TaskType, a.SYBProductID = models.PurchaseTaskTypeSYBOrder, &f.syb.ID
+	if err := db.Save(&a).Error; err != nil {
+		t.Fatal(err)
+	}
+	b := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	c := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	if err := db.Model(&c).Update("irreversible_at", nil).Error; err != nil {
+		t.Fatal(err)
+	}
+	page := backfillItem(b.ID, "ORDER-B")
+	page.OrderSubmittedAt = strptr("2026-09-08T20:30:00+08:00")
+	rid := uuid.NewString()
+	items := []OrderBackfillItem{backfillItem(a.ID, "ORDER-A"), {AddressSuffix: "_cg0", PDDOrderNo: "bad"}, page, backfillItem(c.ID, "ORDER-C"), backfillItem(99999, "missing")}
+	results := runBackfill(t, s, f.token, rid, items...)
+	want := []string{"BACKFILLED", CodeBackfillSuffix, "BACKFILLED", CodeOrderTimeMissing, CodeTaskNotFound}
+	for i, r := range results {
+		if r.Code != want[i] || r.Index != i {
+			t.Fatalf("item %d: %+v", i, r)
+		}
+	}
+	if results[0].TimeSource != "irreversible_at" || !results[0].OrderSubmittedAt.Equal(*a.IrreversibleAt) {
+		t.Fatalf("fallback: %+v", results[0])
+	}
+	if results[2].TimeSource != "page" || results[2].OrderSubmittedAt.Format(time.RFC3339) != "2026-09-08T12:30:00Z" {
+		t.Fatalf("page: %+v", results[2])
+	}
+	saved := loadBackfillTask(t, db, a.ID)
+	if saved.StatusVersion != a.StatusVersion+1 || saved.ErrorCode != nil || saved.ErrorMessage != nil || saved.DeviceRunSlot != nil || saved.AccountRunSlot != nil || saved.ActiveSlot == nil || saved.Status != models.PurchaseTaskStatusOrderCreated {
+		t.Fatalf("state metadata: %+v", saved)
+	}
+	if saved.PaymentReviewStatus != a.PaymentReviewStatus || saved.LogisticsStatus != a.LogisticsStatus || saved.WritebackStatus != a.WritebackStatus || saved.RuleSnapshot != a.RuleSnapshot {
+		t.Fatal("unrelated business facts changed")
+	}
+	for _, replayID := range []string{rid, uuid.NewString()} {
+		item := items[0]
+		item.OrderSubmittedAt = strptr("2026-09-09T00:00:00Z")
+		r := runBackfill(t, s, f.token, replayID, item)[0]
+		if r.Result != "already_backfilled" || r.TimeSource != "irreversible_at" {
+			t.Fatalf("replay: %+v", r)
+		}
+		if got := loadBackfillTask(t, db, a.ID); !reflect.DeepEqual(saved, got) {
+			t.Fatal("replay changed persisted task")
+		}
+	}
+	if got := loadBackfillTask(t, db, c.ID); got.PDDOrderNo != nil || got.StatusVersion != c.StatusVersion {
+		t.Fatal("missing time wrote data")
+	}
+}
+
+func TestOrderBackfillRejectsOwnershipStatesAndInvalidTime(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	for _, status := range []string{models.PurchaseTaskStatusPending, models.PurchaseTaskStatusRunning, models.PurchaseTaskStatusOrderSubmitStarted, models.PurchaseTaskStatusSpecProbePending, models.PurchaseTaskStatusFailed, models.PurchaseTaskStatusCancelled, models.PurchaseTaskStatusRehearsalCompleted} {
+		task := backfillTask(t, db, f, status)
+		before := loadBackfillTask(t, db, task.ID)
+		r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(task.ID, "ORDER"))[0]
+		if r.Code != CodeStateConflict {
+			t.Fatalf("%s: %+v", status, r)
+		}
+		if got := loadBackfillTask(t, db, task.ID); !reflect.DeepEqual(got, before) {
+			t.Fatal("rejection wrote data")
+		}
+		// Release the fixture's device slot before testing the next running state.
+		if err := task.SetStatus(models.PurchaseTaskStatusCancelled); err != nil {
+			t.Fatal(err)
+		}
+		if err := db.Save(&task).Error; err != nil {
+			t.Fatal(err)
+		}
+	}
+	task := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	if err := db.Model(&task).Update("device_id", nil).Error; err != nil {
+		t.Fatal(err)
+	}
+	r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(task.ID, "ORDER"))[0]
+	if r.Code != CodeBackfillDevice || r.Status != "" || r.PDDOrderNo != nil {
+		t.Fatalf("ownership leaked: %+v", r)
+	}
+	other, err := device.NewService(db).Register(context.Background(), device.RegisterRequest{RequestID: uuid.NewString(), InstallID: uuid.NewString(), Name: "Other", Manufacturer: "Test", Model: "Test", AndroidVersion: "15", AgentVersion: "1", PDDVersion: "7", Capabilities: liveCaps()}, "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Model(&task).Update("device_id", other.DeviceID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(task.ID, "ORDER"))[0]; r.Code != CodeBackfillDevice {
+		t.Fatalf("cross device: %+v", r)
+	}
+	if err := db.Model(&task).Updates(map[string]any{"device_id": f.device.ID, "execution_mode": models.PurchaseExecutionModeRehearsal}).Error; err != nil {
+		t.Fatal(err)
+	}
+	if r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(task.ID, "ORDER"))[0]; r.Code != CodeStateConflict {
+		t.Fatalf("rehearsal: %+v", r)
+	}
+	if err := db.Model(&task).Update("execution_mode", models.PurchaseExecutionModeLive).Error; err != nil {
+		t.Fatal(err)
+	}
+	for _, raw := range []string{"", "2026-09-08 12:00:00", "0001-01-01T00:00:00Z", "garbage"} {
+		item := backfillItem(task.ID, "ORDER")
+		item.OrderSubmittedAt = &raw
+		if r := runBackfill(t, s, f.token, uuid.NewString(), item)[0]; r.Code != CodeOrderTimeInvalid {
+			t.Fatalf("invalid time: %+v", r)
+		}
+	}
+}
+
+func TestOrderBackfillConflictsNeverOverwrite(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	a := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	b := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	rid := uuid.NewString()
+	r := runBackfill(t, s, f.token, rid, backfillItem(a.ID, "A"), backfillItem(a.ID, "B"), backfillItem(b.ID, "B"))
+	if r[0].Code != CodeBackfillBatchConflict || r[1].Code != CodeBackfillBatchConflict || r[2].Code != "BACKFILLED" {
+		t.Fatalf("batch: %+v", r)
+	}
+	r = runBackfill(t, s, f.token, rid, backfillItem(a.ID, "B"), backfillItem(b.ID, "C"))
+	if r[0].Code != CodeBackfillOrderUsed || r[1].Code != CodeBackfillOrderConflict {
+		t.Fatalf("changed requestId payload bypassed checks: %+v", r)
+	}
+	if got := loadBackfillTask(t, db, b.ID); *got.PDDOrderNo != "B" || got.StatusVersion != b.StatusVersion+1 {
+		t.Fatal("conflict overwrote")
+	}
+	if got := loadBackfillTask(t, db, a.ID); got.PDDOrderNo != nil {
+		t.Fatal("conflict wrote data")
+	}
+	// Even an unknown task with an existing conflicting value must preserve it.
+	a.PDDOrderNo = strptr("OLD")
+	if err := db.Save(&a).Error; err != nil {
+		t.Fatal(err)
+	}
+	if r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(a.ID, "NEW"))[0]; r.Code != CodeBackfillOrderConflict {
+		t.Fatalf("unknown existing: %+v", r)
+	}
+}
+
+func TestOrderBackfillConcurrentResolveUnknown(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	// SQLite serializes transactions through one connection. These concurrent
+	// service calls verify both winner orders; they do not certify MySQL locks.
+	sqlDB, _ := db.DB()
+	sqlDB.SetMaxOpenConns(1)
+	for i := 0; i < 12; i++ {
+		task := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+		start := make(chan struct{})
+		var wg sync.WaitGroup
+		wg.Add(2)
+		var out OrderBackfillResponse
+		var backErr, manualErr error
+		go func() {
+			defer wg.Done()
+			<-start
+			out, backErr = s.BackfillOrders(context.Background(), OrderBackfillRequest{RequestID: uuid.NewString(), Items: []OrderBackfillItem{backfillItem(task.ID, "BACK-"+purchasecontract.AddressSuffix(task.ID))}}, f.token)
+		}()
+		go func() {
+			defer wg.Done()
+			<-start
+			_, _, manualErr = s.ResolveUnknown(context.Background(), task.ID, ManualRequest{RequestID: uuid.NewString(), OperatorID: 1, Status: models.PurchaseTaskStatusOrderCreated, PDDOrderNo: "MANUAL-" + purchasecontract.AddressSuffix(task.ID), OrderSubmittedAt: task.IrreversibleAt})
+		}()
+		close(start)
+		wg.Wait()
+		if backErr != nil {
+			t.Fatal(backErr)
+		}
+		got := loadBackfillTask(t, db, task.ID)
+		if got.StatusVersion != task.StatusVersion+1 || got.Status != models.PurchaseTaskStatusOrderCreated {
+			t.Fatal("competing writes changed version twice")
+		}
+		if manualErr == nil {
+			if out.Items[0].Code != CodeBackfillOrderConflict || !strings.HasPrefix(*got.PDDOrderNo, "MANUAL-") {
+				t.Fatalf("manual winner: %+v", out)
+			}
+		} else if code(manualErr) != CodeStateConflict || out.Items[0].Code != "BACKFILLED" || !strings.HasPrefix(*got.PDDOrderNo, "BACK-") {
+			t.Fatalf("backfill winner: %+v %v", out, manualErr)
+		}
+	}
+}
+
+func TestOrderBackfillConcurrentLateResultAndOtherTask(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	sqlDB, _ := db.DB()
+	sqlDB.SetMaxOpenConns(1)
+	a := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	attempt := models.PurchaseTaskAttempt{TaskID: a.ID, AttemptID: uuid.NewString(), AttemptNumber: 1, Phase: models.PurchaseAttemptPhasePurchase, Status: models.PurchaseAttemptStatusFailed, DeviceID: &f.device.ID, RuleSnapshotHash: purchaseRuleSnapshotHash(a.RuleSnapshot), SpecDecisionSnapshot: `{}`}
+	if err := db.Omit("Task").Create(&attempt).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.First(&attempt, attempt.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	start := make(chan struct{})
+	var wg sync.WaitGroup
+	wg.Add(2)
+	var out OrderBackfillResponse
+	var backErr, lateErr error
+	go func() {
+		defer wg.Done()
+		<-start
+		out, backErr = s.BackfillOrders(context.Background(), OrderBackfillRequest{RequestID: uuid.NewString(), Items: []OrderBackfillItem{backfillItem(a.ID, "BACK")}}, f.token)
+	}()
+	go func() {
+		defer wg.Done()
+		<-start
+		_, lateErr = s.SubmitResult(context.Background(), a.ID, ResultRequest{RequestID: uuid.NewString(), TaskAttemptID: attempt.AttemptID, ResultType: "order_created", PDDOrderNo: "LATE", OrderSubmittedAt: a.IrreversibleAt}, f.token)
+	}()
+	close(start)
+	wg.Wait()
+	if backErr != nil || out.Items[0].Code != "BACKFILLED" || code(lateErr) != CodeStateConflict {
+		t.Fatalf("late race: %+v %v %v", out, backErr, lateErr)
+	}
+	var savedAttempt models.PurchaseTaskAttempt
+	if err := db.First(&savedAttempt, attempt.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if !reflect.DeepEqual(savedAttempt, attempt) {
+		t.Fatal("backfill rewrote attempt")
+	}
+	b := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	_, _, err := s.ResolveUnknown(context.Background(), b.ID, ManualRequest{RequestID: uuid.NewString(), OperatorID: 1, Status: models.PurchaseTaskStatusOrderCreated, PDDOrderNo: "BACK", OrderSubmittedAt: b.IrreversibleAt})
+	if err == nil {
+		t.Fatal("manual path assigned another task's order")
+	}
+	if got := loadBackfillTask(t, db, b.ID); got.PDDOrderNo != nil || got.StatusVersion != b.StatusVersion {
+		t.Fatal("other task changed on conflict")
+	}
+}
+
+func TestOrderBackfillHTTPBoundary(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	task := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	gin.SetMode(gin.TestMode)
+	r := gin.New()
+	r.POST("/order-backfill", device.RequireAgentHTTPS(false, false), (Handler{DB: db}).BackfillOrders)
+	body, _ := json.Marshal(OrderBackfillRequest{RequestID: uuid.NewString(), Items: []OrderBackfillItem{backfillItem(task.ID, "HTTP")}})
+	for _, test := range []struct {
+		body, token string
+		status      int
+	}{
+		{string(body), "", http.StatusUnauthorized},
+		{`{"requestId":"bad","items":[]}`, f.token, http.StatusUnprocessableEntity},
+		{`{"requestId":"x","address":"forbidden"}`, f.token, http.StatusUnprocessableEntity},
+		{string(body), f.token, http.StatusOK},
+	} {
+		req := httptest.NewRequest(http.MethodPost, "/order-backfill", strings.NewReader(test.body))
+		req.Header.Set("Authorization", "Bearer "+test.token)
+		w := httptest.NewRecorder()
+		r.ServeHTTP(w, req)
+		if w.Code != test.status {
+			t.Fatalf("HTTP %d: %s", w.Code, w.Body.String())
+		}
+	}
+	_, err := testService(db).BackfillOrders(context.Background(), OrderBackfillRequest{RequestID: uuid.NewString(), Items: make([]OrderBackfillItem, 51)}, f.token)
+	if code(err) != CodeInvalidRequest {
+		t.Fatalf("batch limit: %v", err)
+	}
+}
+
+func TestOrderBackfillConcurrentSameOrderDifferentTasks(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	sqlDB, _ := db.DB()
+	sqlDB.SetMaxOpenConns(1)
+	a := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	b := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	start := make(chan struct{})
+	results := make(chan OrderBackfillResponse, 2)
+	errors := make(chan error, 2)
+	for _, id := range []uint64{a.ID, b.ID} {
+		go func(id uint64) {
+			<-start
+			out, err := s.BackfillOrders(context.Background(), OrderBackfillRequest{RequestID: uuid.NewString(), Items: []OrderBackfillItem{backfillItem(id, "SAME")}}, f.token)
+			results <- out
+			errors <- err
+		}(id)
+	}
+	close(start)
+	codes := make(map[string]int)
+	for i := 0; i < 2; i++ {
+		out := <-results
+		if err := <-errors; err != nil {
+			t.Fatal(err)
+		}
+		codes[out.Items[0].Code]++
+	}
+	if codes["BACKFILLED"] != 1 || codes[CodeBackfillOrderUsed] != 1 {
+		t.Fatalf("concurrent assignments: %+v", codes)
+	}
+	var count int64
+	if err := db.Model(&models.PurchaseTask{}).Where("pdd_order_no = ?", "SAME").Count(&count).Error; err != nil || count != 1 {
+		t.Fatalf("duplicate order: %d %v", count, err)
+	}
+}
+
+func TestOrderBackfillRejectsLateAssignmentOfSameOrder(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	a := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	if r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(a.ID, "SHARED"))[0]; r.Code != "BACKFILLED" {
+		t.Fatal(r)
+	}
+	b := backfillTask(t, db, f, models.PurchaseTaskStatusOrderSubmitStarted)
+	lease := s.Now().Add(time.Minute)
+	b.LeaseExpiresAt = &lease
+	if err := db.Save(&b).Error; err != nil {
+		t.Fatal(err)
+	}
+	attempt := models.PurchaseTaskAttempt{TaskID: b.ID, AttemptID: uuid.NewString(), AttemptNumber: 1, Phase: models.PurchaseAttemptPhasePurchase, Status: models.PurchaseAttemptStatusRunning, DeviceID: &f.device.ID, RuleSnapshotHash: purchaseRuleSnapshotHash(b.RuleSnapshot), SpecDecisionSnapshot: `{}`}
+	if err := db.Omit("Task").Create(&attempt).Error; err != nil {
+		t.Fatal(err)
+	}
+	req := ResultRequest{RequestID: uuid.NewString(), TaskAttemptID: attempt.AttemptID, ResultType: "order_created", PDDOrderNo: "SHARED", OrderSubmittedAt: b.IrreversibleAt}
+	out, err := s.SubmitResult(context.Background(), b.ID, req, f.token)
+	if err != nil || out.Status != models.PurchaseTaskStatusOrderResultUnknown {
+		t.Fatalf("conflicting result must commit as unknown: %+v %v", out, err)
+	}
+	got := loadBackfillTask(t, db, b.ID)
+	if got.Status != models.PurchaseTaskStatusOrderResultUnknown || got.StatusVersion != b.StatusVersion+1 || got.PDDOrderNo != nil {
+		t.Fatalf("duplicate assignment was not safely downgraded: %+v", got)
+	}
+	wantMessage := "读到订单号 SHARED，但该号已属于任务 " + taskNumber(a.ID)
+	if got.ErrorCode == nil || *got.ErrorCode != CodeOrderNumberUsed || got.ErrorMessage == nil || *got.ErrorMessage != wantMessage {
+		t.Fatalf("conflict evidence missing: %+v", got)
+	}
+	if got.OrderSubmittedAt == nil || !got.OrderSubmittedAt.Equal(*req.OrderSubmittedAt) || got.IrreversibleAt == nil || got.LeaseExpiresAt != nil || got.DeviceRunSlot != nil || got.AccountRunSlot != nil {
+		t.Fatalf("boundary evidence or released lease missing: %+v", got)
+	}
+	var saved models.PurchaseTaskAttempt
+	if err := db.First(&saved, attempt.ID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if saved.Status != models.PurchaseAttemptStatusFailed || saved.ResultRequestID == nil || *saved.ResultRequestID != req.RequestID || saved.ResultHash == nil || saved.ResultType == nil || *saved.ResultType != "order_created" || saved.FinishedAt == nil || saved.ErrorCode == nil || *saved.ErrorCode != CodeOrderNumberUsed || saved.ErrorMessage == nil || *saved.ErrorMessage != wantMessage {
+		t.Fatalf("attempt result and conflict evidence missing: %+v", saved)
+	}
+	out, err = s.SubmitResult(context.Background(), b.ID, req, f.token)
+	if err != nil || !out.Replayed || out.Status != models.PurchaseTaskStatusOrderResultUnknown || loadBackfillTask(t, db, b.ID).StatusVersion != got.StatusVersion {
+		t.Fatalf("unknown result replay failed: %+v %v", out, err)
+	}
+	owner := loadBackfillTask(t, db, a.ID)
+	if owner.PDDOrderNo == nil || *owner.PDDOrderNo != "SHARED" || owner.Status != models.PurchaseTaskStatusOrderCreated {
+		t.Fatalf("existing owner changed: %+v", owner)
+	}
+	var count int64
+	if err := db.Model(&models.PurchaseTask{}).Where("pdd_order_no = ?", "SHARED").Count(&count).Error; err != nil || count != 1 {
+		t.Fatalf("duplicate order: %d %v", count, err)
+	}
+	resolved, _, err := s.ResolveUnknown(context.Background(), b.ID, ManualRequest{RequestID: uuid.NewString(), OperatorID: 1, Status: models.PurchaseTaskStatusOrderCreated, PDDOrderNo: "CORRECTED", OrderSubmittedAt: req.OrderSubmittedAt})
+	if err != nil || resolved.Status != models.PurchaseTaskStatusOrderCreated {
+		t.Fatalf("manual resolution unavailable: %+v %v", resolved, err)
+	}
+}
+
+func TestOrderBackfillHTTPTransportPolicy(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	for _, allow := range []string{"false", "true"} {
+		t.Setenv("GOAUTO_ALLOW_INSECURE_AGENT_HTTP", allow)
+		r := gin.New()
+		r.POST("/order-backfill", device.RequireAgentHTTPS(true, false), (Handler{}).BackfillOrders)
+		w := httptest.NewRecorder()
+		r.ServeHTTP(w, httptest.NewRequest(http.MethodPost, "/order-backfill", strings.NewReader(`{}`)))
+		if allow == "false" && w.Code != http.StatusUpgradeRequired {
+			t.Fatalf("HTTPS bypass: %d", w.Code)
+		}
+		if allow == "true" && w.Code == http.StatusUpgradeRequired {
+			t.Fatal("HTTP compatibility broken")
+		}
+	}
+}
+
+func TestOrderBackfillMultiConnectionResolveRace(t *testing.T) {
+	db := testDB(t)
+	f := seed(t, db, liveCaps(), true)
+	s := testService(db)
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sqlDB.SetMaxOpenConns(4)
+	task := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+	start := make(chan struct{})
+	var wg sync.WaitGroup
+	wg.Add(2)
+	var back OrderBackfillResponse
+	var backErr, manualErr error
+	req := OrderBackfillRequest{RequestID: uuid.NewString(), Items: []OrderBackfillItem{backfillItem(task.ID, "BACK")}}
+	go func() { defer wg.Done(); <-start; back, backErr = s.BackfillOrders(context.Background(), req, f.token) }()
+	go func() {
+		defer wg.Done()
+		<-start
+		_, _, manualErr = s.ResolveUnknown(context.Background(), task.ID, ManualRequest{RequestID: uuid.NewString(), OperatorID: 1, Status: models.PurchaseTaskStatusOrderCreated, PDDOrderNo: "MANUAL", OrderSubmittedAt: task.IrreversibleAt})
+	}()
+	close(start)
+	wg.Wait()
+	// SQLite returns table-lock errors rather than waiting on FOR UPDATE.
+	// Only that documented DB contention or a domain conflict is acceptable;
+	// after the competing calls finish, replay must converge without overwrite.
+	if backErr != nil && !strings.Contains(backErr.Error(), "locked") {
+		t.Fatal(backErr)
+	}
+	if manualErr != nil && code(manualErr) != CodeStateConflict && !strings.Contains(manualErr.Error(), "locked") {
+		t.Fatal(manualErr)
+	}
+	if backErr == nil && back.Items[0].Code != "BACKFILLED" && back.Items[0].Code != CodeBackfillOrderConflict && !(back.Items[0].Code == CodeInternal && back.Items[0].Retryable) {
+		t.Fatalf("unexpected race result: %+v", back)
+	}
+	before := loadBackfillTask(t, db, task.ID)
+	replay := runBackfill(t, s, f.token, req.RequestID, req.Items...)[0]
+	after := loadBackfillTask(t, db, task.ID)
+	if before.PDDOrderNo != nil && !reflect.DeepEqual(before, after) {
+		t.Fatal("replay overwrote the concurrent winner")
+	}
+	if after.StatusVersion != task.StatusVersion+1 || after.Status != models.PurchaseTaskStatusOrderCreated {
+		t.Fatal("race did not converge to a single transition")
+	}
+	if manualErr == nil {
+		if *after.PDDOrderNo != "MANUAL" || replay.Code != CodeBackfillOrderConflict {
+			t.Fatal("manual winner overwritten")
+		}
+	} else if *after.PDDOrderNo != "BACK" || (replay.Code != "BACKFILLED" && replay.Code != "ALREADY_BACKFILLED") {
+		t.Fatalf("backfill did not converge: %+v", replay)
+	}
+}
@@ -0,0 +1,74 @@
+package purchase
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-admin/app/goauto/models"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+func TestOrderNumberConflictBusinessErrors(t *testing.T) {
+	for _, path := range []string{"resolve_unknown", "cancel", "lifecycle"} {
+		t.Run(path, func(t *testing.T) {
+			db := testDB(t)
+			f := seed(t, db, liveCaps(), true)
+			s := testService(db)
+			owner := backfillTask(t, db, f, models.PurchaseTaskStatusOrderResultUnknown)
+			if r := runBackfill(t, s, f.token, uuid.NewString(), backfillItem(owner.ID, "SHARED"))[0]; r.Code != "BACKFILLED" {
+				t.Fatal(r)
+			}
+			status := models.PurchaseTaskStatusOrderResultUnknown
+			if path == "lifecycle" {
+				status = models.PurchaseTaskStatusRunning
+			}
+			task := backfillTask(t, db, f, status)
+			if path != "resolve_unknown" {
+				// Model legacy duplicate data predating the global save guard.
+				if err := db.Session(&gorm.Session{SkipHooks: true}).Model(&models.PurchaseTask{}).Where("id = ?", task.ID).Updates(map[string]any{"pdd_order_no": "SHARED", "lease_expires_at": s.Now().Add(time.Minute)}).Error; err != nil {
+					t.Fatal(err)
+				}
+			}
+			req := ManualRequest{RequestID: uuid.NewString(), OperatorID: 1, Status: models.PurchaseTaskStatusOrderCreated, PDDOrderNo: "SHARED", OrderSubmittedAt: task.IrreversibleAt, Reason: "人工取消"}
+			var err error
+			switch path {
+			case "resolve_unknown":
+				_, _, err = s.ResolveUnknown(context.Background(), task.ID, req)
+			case "cancel":
+				_, _, err = s.Cancel(context.Background(), task.ID, req)
+			case "lifecycle":
+				attempt := models.PurchaseTaskAttempt{TaskID: task.ID, AttemptID: uuid.NewString(), AttemptNumber: 1, Phase: models.PurchaseAttemptPhasePurchase, Status: models.PurchaseAttemptStatusRunning, DeviceID: &f.device.ID, RuleSnapshotHash: purchaseRuleSnapshotHash(task.RuleSnapshot), SpecDecisionSnapshot: `{}`}
+				if e := db.Omit("Task").Create(&attempt).Error; e != nil {
+					t.Fatal(e)
+				}
+				_, err = s.MarkOrderSubmitStarted(context.Background(), task.ID, ActionRequest{RequestID: req.RequestID}, f.token)
+			}
+			want := "订单号已属于任务 " + taskNumber(owner.ID)
+			if code(err) != CodeOrderNumberUsed || err.Error() != want {
+				t.Fatalf("unmapped conflict: %v", err)
+			}
+			w := httptest.NewRecorder()
+			c, _ := gin.CreateTestContext(w)
+			writeError(c, err)
+			var body struct {
+				Code      string `json:"code"`
+				Message   string `json:"message"`
+				Retryable bool   `json:"retryable"`
+			}
+			if e := json.Unmarshal(w.Body.Bytes(), &body); e != nil || w.Code != http.StatusConflict || body.Code != CodeOrderNumberUsed || body.Message != want || body.Retryable {
+				t.Fatalf("unexpected HTTP error: %d %s (%v)", w.Code, w.Body.String(), e)
+			}
+			got := loadBackfillTask(t, db, task.ID)
+			if got.Status != status || got.StatusVersion != task.StatusVersion || got.UnknownResolveRequestID != nil || got.CancelRequestID != nil || got.OrderSubmitRequestID != nil {
+				t.Fatalf("rejected mutation persisted: %+v", got)
+			}
+		})
+	}
+}
@@ -18,6 +18,7 @@ func InitRouter(engine *gin.Engine, auth *jwt.GinJWTMiddleware) {
 	agent := engine.Group("/api/agent/v1/purchase-tasks").Use(device.RequireAgentHTTPS(config.ApplicationConfig.Mode == "prod", trust))
 	agent.GET("", h.AgentHistory)
 	agent.GET("/next", h.Next)
+	agent.POST("/order-backfill", h.BackfillOrders)
 	agent.GET("/:taskId", h.AgentHistoryDetail)
 	agent.POST("/:taskId/retry", h.AgentRetry)
 	agent.POST("/:taskId/reset", h.AgentReset)
@@ -22,6 +22,7 @@ const (
 	CodeRetryStale          = "PURCHASE_RETRY_STALE"
 	CodeSpecReprobeRejected = "PURCHASE_SPEC_REPROBE_REJECTED"
 	CodeOrderResultUnknown  = "PURCHASE_ORDER_RESULT_UNKNOWN"
+	CodeOrderNumberUsed     = "PURCHASE_ORDER_NUMBER_ALREADY_USED"
 	CodeOrderEmptyTimeout   = "PURCHASE_ORDER_EMPTY_TIMEOUT"
 	CodeOrderChooserBack    = "PURCHASE_ORDER_CHOOSER_BACK_FAILED"
 	CodeOrderWechatRestore  = "PURCHASE_ORDER_WECHAT_RESTORE_FAILED"
@@ -0,0 +1,17 @@
+package purchasecontract
+
+import "testing"
+
+func TestParseAddressSuffix(t *testing.T) {
+	for _, id := range []uint64{7, 72, ^uint64(0)} {
+		got, err := ParseAddressSuffix(AddressSuffix(id))
+		if err != nil || got != id {
+			t.Fatalf("id=%d got=%d err=%v", id, got, err)
+		}
+	}
+	for _, raw := range []string{"", "_cg", "_cg0", "_cg00", "_cg07", "_cg+7", "_cg-7", "_cg18446744073709551616", "_CG7", "_cg7x", "_cg7_cg72", "address_cg7", " _cg7", "_cg7 ", "_cg７", "_cg7\n"} {
+		if id, err := ParseAddressSuffix(raw); err == nil || id != 0 {
+			t.Errorf("accepted %q: %d", raw, id)
+		}
+	}
+}
@@ -9,6 +9,7 @@ import (
 	"math"
 	"regexp"
 	"sort"
+	"strconv"
 	"strings"
 	"unicode/utf8"
 )
@@ -360,6 +361,18 @@ func RequiredCapabilities(rule RuleSnapshot) []string {

 func AddressSuffix(taskID uint64) string { return fmt.Sprintf("_cg%d", taskID) }

+// ParseAddressSuffix accepts only the exact canonical suffix, never an address.
+func ParseAddressSuffix(suffix string) (uint64, error) {
+	if !strings.HasPrefix(suffix, "_cg") {
+		return 0, errors.New("invalid address suffix")
+	}
+	id, err := strconv.ParseUint(strings.TrimPrefix(suffix, "_cg"), 10, 64)
+	if err != nil || id == 0 || AddressSuffix(id) != suffix {
+		return 0, errors.New("invalid address suffix")
+	}
+	return id, nil
+}
+
 func ensureEOF(decoder *json.Decoder) error {
 	var extra any
 	if err := decoder.Decode(&extra); err != io.EOF {
@@ -171,6 +171,9 @@ func runImport(db *gorm.DB, runID uint64, request ImportRequest, settings config
 	status := SyncRunSucceeded
 	if err != nil {
 		status = SyncRunFailed
+		if report.Created+report.Updated > 0 {
+			status = SyncRunPartial
+		}
 	}
 	finishCtx, finishCancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer finishCancel()
@@ -4,44 +4,9 @@ import (
 	"context"
 	"strings"
 	"testing"
-	"time"
 )

-func freezePaginationToday(t *testing.T) {
-	t.Helper()
-	previous := syncNow
-	syncNow = func() time.Time { return time.Date(2026, 8, 29, 12, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60)) }
-	t.Cleanup(func() { syncNow = previous })
-}
-
-func TestTodayCrossPageOverlapRestartsWithIndependentIDs(t *testing.T) {
-	freezePaginationToday(t)
-	f := &fakeSYB{perDay: map[string]int{"2026-08-29": 4}}
-	f.pageIDs = func(_ string, start, call int) []int64 {
-		if call == 2 {
-			return []int64{1001, 1002}
-		}
-		if call > 2 {
-			return []int64{int64(2000 + start), int64(2001 + start)}
-		}
-		return nil
-	}
-	rows, err := loadDailyListWithRecovery(context.Background(), newSyncClient(t, f), "2026-08-29", 2, 4, 100)
-	if err != nil || len(rows) != 4 || f.listTotalCalls != 2 {
-		t.Fatalf("rows=%d totals=%d err=%v", len(rows), f.listTotalCalls, err)
-	}
-	if got := strings.Join(f.listCalls, ","); got != "2026-08-29:0,2026-08-29:2,2026-08-29:0,2026-08-29:2" {
-		t.Fatalf("did not restart at first page: %s", got)
-	}
-	for index, row := range rows {
-		if row.ID != int64(2000+index) {
-			t.Fatal("rows leaked from abandoned attempt")
-		}
-	}
-}
-
-func TestTodayPersistentOverlapPreservesYesterdayButDoesNotImportToday(t *testing.T) {
-	freezePaginationToday(t)
+func TestTodayOverlapPreservesCommittedPagesWithoutImportingOverlappingPage(t *testing.T) {
 	f := &fakeSYB{perDay: map[string]int{"2026-08-28": 2, "2026-08-29": 4}}
 	f.pageIDs = func(date string, start, _ int) []int64 {
 		if date == "2026-08-29" && start == 2 {
@@ -54,7 +19,7 @@ func TestTodayPersistentOverlapPreservesYesterdayButDoesNotImportToday(t *testin
 	if err == nil {
 		t.Fatal("overlap was treated as successful sync")
 	}
-	for _, token := range []string{"连续 3 次", "跨页重复", "firstPage=1", "firstRow=2", "page=2", "row=1", "start=2", "pageSize=2", "expectedTotal=4", "unique=2"} {
+	for _, token := range []string{"跨页重复", "firstPage=1", "firstRow=2", "page=2", "row=1", "start=2", "pageSize=2", "expectedTotal=4", "unique=2"} {
 		if !strings.Contains(err.Error(), token) {
 			t.Fatalf("missing %s in %v", token, err)
 		}
@@ -62,7 +27,7 @@ func TestTodayPersistentOverlapPreservesYesterdayButDoesNotImportToday(t *testin
 	if strings.Contains(err.Error(), "1001") || strings.Contains(err.Error(), "已保存") {
 		t.Fatalf("unsafe diagnosis/degraded save: %v", err)
 	}
-	if len(f.listCalls) != 7 || f.detailCalls != 1 || report.OrderCount != 2 {
+	if len(f.listCalls) != 3 || f.detailCalls != 2 || report.OrderCount != 4 || report.Created != 2 || report.Updated != 2 {
 		t.Fatalf("unexpected retry/import boundary: pages=%d details=%d orders=%d", len(f.listCalls), f.detailCalls, report.OrderCount)
 	}
 	var count int64
@@ -72,7 +37,6 @@ func TestTodayPersistentOverlapPreservesYesterdayButDoesNotImportToday(t *testin
 }

 func TestPaginationHardErrorsDoNotUseOverlapRecovery(t *testing.T) {
-	freezePaginationToday(t)
 	for _, tc := range []struct {
 		name, date, message string
 		page                int
@@ -92,7 +56,7 @@ func TestPaginationHardErrorsDoNotUseOverlapRecovery(t *testing.T) {
 				}
 				return nil
 			}
-			rows, err := loadDailyListWithRecovery(context.Background(), newSyncClient(t, f), tc.date, 2, 4, 100)
+			rows, err := loadDailyList(context.Background(), newSyncClient(t, f), tc.date, 2, 4)
 			if rows != nil || err == nil || !strings.Contains(err.Error(), tc.message) || len(f.listCalls) != tc.calls || f.listTotalCalls != 0 {
 				t.Fatalf("unexpected recovery: rows=%d pages=%d totals=%d err=%v", len(rows), len(f.listCalls), f.listTotalCalls, err)
 			}
@@ -41,8 +41,7 @@ const (
 	// maxSyncDays bounds one request's window. It is a guard against a typo in
 	// the date range turning into tens of thousands of remote reads before
 	// MaxMatches trips.
-	maxSyncDays              = 31
-	maxTodaySnapshotAttempts = 3
+	maxSyncDays = 31
 )

 // SyncReport summarises one sync run.
@@ -82,8 +81,6 @@ type SyncProgress struct {
 	DaysProcessed int
 }

-var syncNow = time.Now
-
 type ProgressFunc func(SyncProgress) error

 type snapshotDriftError struct {
@@ -94,14 +91,6 @@ type snapshotDriftError struct {

 func (err *snapshotDriftError) Error() string { return err.message }

-func shanghaiToday() string {
-	location, err := time.LoadLocation("Asia/Shanghai")
-	if err != nil {
-		location = time.FixedZone("Asia/Shanghai", 8*60*60)
-	}
-	return syncNow().In(location).Format("2006-01-02")
-}
-
 // Sync pulls every shipment order in [dateFrom, dateTo] and folds each detail
 // line into the SYB/Shopee archive through ApplyDetail.
 //
@@ -109,16 +98,10 @@ func shanghaiToday() string {
 // a separate concern (see Connect); a session that dies mid-run surfaces as
 // sybclient.ErrSessionInvalid and is treated like any other mid-run failure.
 //
-// `[必须]` Failure stops the run immediately. Rows already written are NOT
-// rolled back — ApplyDetail is idempotent on (order_code, detail_id), so a
-// re-run overwrites them rather than duplicating. What must not happen is
-// reporting a partial run as a complete one, which would let the missing
-// orders go unnoticed forever.
-//
-// `[必须]` Every day is verified for completeness before anything is written:
-// the per-day total is re-read after paging and must not have drifted. SYB's
-// list endpoint returns the *page* size in `total` (§4.3, confirmed against
-// live data), so the paging loop is driven by listTotal, never by list.total.
+// Each validated page is committed independently. Date-local read failures
+// preserve committed pages and allow later dates to run. Database, cancellation
+// and progress persistence failures stop the run. Completeness is verified at
+// the end of each date; partial results must never be reported as full success.
 func Sync(ctx context.Context, db *gorm.DB, client *sybclient.Client, cfg SyncConfig, dateFrom, dateTo string) (SyncReport, error) {
 	return SyncWithProgress(ctx, db, client, cfg, dateFrom, dateTo, nil)
 }
@@ -190,106 +173,38 @@ func SyncWithShopSnapshot(ctx context.Context, db *gorm.DB, client *sybclient.Cl
 		plans = append(plans, dayPlan{date: date, total: total})
 	}

-	for dayIndex, plan := range plans {
-		if plan.total == 0 {
-			if err := emit(dayIndex + 1); err != nil {
-				return report, err
-			}
-			continue
-		}
-		// `[必须]` Completeness first, filtering second. loadDailyList proves the
-		// day's snapshot is whole; filtering before that would let drift among
-		// other shops' orders hide a hole in the ones we do want
-		// (docs/12-syb-erp-interface.md §8).
-		rows, listErr := loadDailyListWithRecovery(ctx, client, plan.date, pageSize, plan.total, maxMatches)
-		if listErr != nil && len(rows) == 0 {
-			return report, listErr
-		}
-		report.OrderCount += len(rows)
-
-		byID := make(map[int64]sybclient.StockRow, len(rows))
-		ids := make([]int64, 0, len(rows))
-		for _, row := range rows {
-			name := stringField(row.Raw, "shopName")
-			label := name
-			if sybshop.IsBlank(label) {
-				label = "(无店铺名)"
-			}
-			display, ok := allowed[sybshop.Normalize(name)]
-			if ok {
-				label = display
-			}
-			if !ok {
-				entry := report.ShopBreakdown[label]
-				entry.Skipped++
-				report.ShopBreakdown[label] = entry
-				report.ShopSkipped++
-				continue
-			}
-			entry := report.ShopBreakdown[label]
-			entry.Accepted++
-			report.ShopBreakdown[label] = entry
-			report.AcceptedCount++
-			byID[row.ID] = row
-			ids = append(ids, row.ID)
-		}
-		if len(ids) == 0 {
-			if err := emit(dayIndex + 1); err != nil {
-				return report, err
-			}
-			continue
-		}
-
-		for start := 0; start < len(ids); start += detailBatch {
-			end := start + detailBatch
-			if end > len(ids) {
-				end = len(ids)
-			}
-			batch := ids[start:end]
-			details, err := client.DetailListByStock(ctx, batch)
-			if err != nil {
-				return report, fmt.Errorf("拉取 %s 货运单明细失败（本次同步停止；"+
-					"已写入的数据保留，重跑会按 (order_code, detail_id) 覆盖）: %w", plan.date, err)
-			}
-			if err := validateDetailBatch(batch, details); err != nil {
-				return report, fmt.Errorf("%s 货运单明细不完整：%w；本次同步停止", plan.date, err)
-			}
-			for _, detail := range details {
-				// `[必须]` Re-check the shop on the detail response. The list said
-				// this order belongs to an enabled shop; if the detail disagrees,
-				// the two views are inconsistent and importing it would write a
-				// row for a shop nobody enabled.
-				name := stringField(detail.Raw, "shopName")
-				if sybshop.IsBlank(name) {
-					moveAcceptedToSkipped(&report, stringField(byID[detail.ID].Raw, "shopName"), "(无店铺名)", allowed)
-					report.AcceptedCount--
-					report.ShopSkipped++
-					continue
-				}
-				if _, ok := allowed[sybshop.Normalize(name)]; !ok {
-					moveAcceptedToSkipped(&report, stringField(byID[detail.ID].Raw, "shopName"), name, allowed)
-					report.AcceptedCount--
-					report.ShopSkipped++
-					continue
-				}
-				if err := applyStockDetail(ctx, db, byID[detail.ID], detail, &report); err != nil {
-					return report, err
-				}
-			}
-			if err := emit(dayIndex); err != nil {
-				return report, err
-			}
-		}
-		if listErr != nil {
-			return report, listErr
-		}
-		if err := emit(dayIndex + 1); err != nil {
+	daysCompleted := 0
+	var failures []error
+	for _, plan := range plans {
+		if err := ctx.Err(); err != nil {
 			return report, err
 		}
+		_, dayErr := loadDailyList(ctx, client, plan.date, pageSize, plan.total, func(rows []sybclient.StockRow, page int) error {
+			report.OrderCount += len(rows)
+			err := importSyncPage(ctx, db, client, rows, allowed, &report)
+			if err != nil {
+				return fmt.Errorf("%s 第 %d 页明细/入库阶段失败: %w", plan.date, page, err)
+			}
+			if err := emit(daysCompleted); err != nil {
+				return &syncFatalError{err}
+			}
+			return nil
+		})
+		if dayErr != nil {
+			failures = append(failures, dayErr)
+			var fatal *syncFatalError
+			if ctx.Err() != nil || errors.As(dayErr, &fatal) || errors.Is(dayErr, sybclient.ErrSessionInvalid) {
+				return report, errors.Join(failures...)
+			}
+			continue
+		}
+		daysCompleted++
+		if err := emit(daysCompleted); err != nil {
+			return report, errors.Join(append(failures, err)...)
+		}
 	}
-
 	report.FinishedAt = time.Now().UTC()
-	return report, nil
+	return report, errors.Join(failures...)
 }

 func shopSnapshotNames(allowed map[string]string) []string {
@@ -336,39 +251,7 @@ func moveAcceptedToSkipped(report *SyncReport, listName, detailName string, allo
 // `[必须]` The loop bound comes from expectedTotal (listTotal), because
 // list.total is the current page's row count, not the filtered total (§4.3).
 // Driving the loop with the response's own total would stop after page one.
-func loadDailyListWithRecovery(ctx context.Context, client *sybclient.Client, date string, pageSize, expectedTotal, maxMatches int) ([]sybclient.StockRow, error) {
-	if date != shanghaiToday() {
-		return loadDailyList(ctx, client, date, pageSize, expectedTotal)
-	}
-	var last *snapshotDriftError
-	for attempt := 1; attempt <= maxTodaySnapshotAttempts; attempt++ {
-		if attempt > 1 {
-			total, err := client.ListTotal(ctx, date, date, pageSize)
-			if err != nil {
-				return nil, fmt.Errorf("重新查询今天 %s 货运单总数失败: %w", date, err)
-			}
-			if total > maxMatches {
-				return nil, fmt.Errorf("今天 %s 的货运单总数 %d 超过单次同步上限 %d", date, total, maxMatches)
-			}
-			expectedTotal = total
-		}
-		rows, err := loadDailyList(ctx, client, date, pageSize, expectedTotal)
-		if err == nil {
-			return rows, nil
-		}
-		var drift *snapshotDriftError
-		if !errors.As(err, &drift) {
-			return nil, fmt.Errorf("今天第 %d/%d 次拉取失败: %w", attempt, maxTodaySnapshotAttempts, err)
-		}
-		last = drift
-	}
-	if last != nil && last.valid && len(last.rows) > 0 {
-		return last.rows, fmt.Errorf("今天持续变化，已保存本次取得的完整明细，但未形成稳定快照；下次同步继续覆盖: %w", last)
-	}
-	return nil, fmt.Errorf("今天持续变化，连续 %d 次未形成稳定快照，本次同步停止: %w", maxTodaySnapshotAttempts, last)
-}
-
-func loadDailyList(ctx context.Context, client *sybclient.Client, date string, pageSize, expectedTotal int) ([]sybclient.StockRow, error) {
+func loadDailyList(ctx context.Context, client *sybclient.Client, date string, pageSize, expectedTotal int, consume ...func([]sybclient.StockRow, int) error) ([]sybclient.StockRow, error) {
 	rows := make([]sybclient.StockRow, 0, expectedTotal)
 	type position struct{ page, row int }
 	seen := make(map[int64]position, expectedTotal)
@@ -413,6 +296,11 @@ func loadDailyList(ctx context.Context, client *sybclient.Client, date string, p
 		if len(page) != expectedPageCount {
 			return nil, &snapshotDriftError{message: fmt.Sprintf("%s 货运单列表第 %d 页不完整且相对初始总数发生变化：预期 %d 行，实际 %d 行", date, pageIndex, expectedPageCount, len(page)), rows: rows, valid: len(page) > expectedPageCount}
 		}
+		if len(consume) > 0 {
+			if err := consume[0](page, pageIndex); err != nil {
+				return nil, err
+			}
+		}
 	}

 	// Re-read the total: if it moved while we paged, some order was inserted or
@@ -0,0 +1,83 @@
+package sybimport
+
+import (
+	"context"
+	"go-admin/app/goauto/sybclient"
+	"go-admin/app/goauto/sybshop"
+	"gorm.io/gorm"
+)
+
+// Database/progress errors stop the entire run, not merely the current date.
+type syncFatalError struct{ error }
+
+func (e *syncFatalError) Unwrap() error { return e.error }
+
+// Read all remote details before opening a page transaction. Publish counters
+// only after commit, so a rollback never reports records as saved.
+func importSyncPage(ctx context.Context, db *gorm.DB, client *sybclient.Client, rows []sybclient.StockRow, allowed map[string]string, report *SyncReport) error {
+	next := *report
+	next.ShopBreakdown = make(map[string]ShopBreakdown, len(report.ShopBreakdown))
+	for k, v := range report.ShopBreakdown {
+		next.ShopBreakdown[k] = v
+	}
+	byID := make(map[int64]sybclient.StockRow)
+	var ids []int64
+	for _, row := range rows {
+		name := stringField(row.Raw, "shopName")
+		label := name
+		if sybshop.IsBlank(label) {
+			label = "(无店铺名)"
+		}
+		display, ok := allowed[sybshop.Normalize(name)]
+		if ok {
+			label = display
+		}
+		entry := next.ShopBreakdown[label]
+		if ok {
+			entry.Accepted++
+			next.AcceptedCount++
+			ids = append(ids, row.ID)
+			byID[row.ID] = row
+		} else {
+			entry.Skipped++
+			next.ShopSkipped++
+		}
+		next.ShopBreakdown[label] = entry
+	}
+	var details []sybclient.StockDetail
+	for start := 0; start < len(ids); start += detailBatch {
+		end := start + detailBatch
+		if end > len(ids) {
+			end = len(ids)
+		}
+		batch, err := client.DetailListByStock(ctx, ids[start:end])
+		if err != nil {
+			return err
+		}
+		if err := validateDetailBatch(ids[start:end], batch); err != nil {
+			return err
+		}
+		details = append(details, batch...)
+	}
+	err := db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		for _, detail := range details {
+			name := stringField(detail.Raw, "shopName")
+			_, ok := allowed[sybshop.Normalize(name)]
+			if sybshop.IsBlank(name) || !ok {
+				moveAcceptedToSkipped(&next, stringField(byID[detail.ID].Raw, "shopName"), name, allowed)
+				next.AcceptedCount--
+				next.ShopSkipped++
+				continue
+			}
+			if err := applyStockDetail(ctx, tx, byID[detail.ID], detail, &next); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return &syncFatalError{err}
+	}
+	*report = next
+	return nil
+}
@@ -0,0 +1,117 @@
+package sybimport
+
+import (
+	"context"
+	"errors"
+	"go-admin/app/goauto/models"
+	"strings"
+	"testing"
+)
+
+func TestPageFailurePreservesEarlierPagesContinuesDatesAndRerunsIdempotently(t *testing.T) {
+	db := newSyncTestDB(t)
+	f := &fakeSYB{perDay: map[string]int{"2026-08-01": 3, "2026-08-02": 1}, shortPageAtIndex: 2}
+	var last SyncProgress
+	report, err := SyncWithProgress(context.Background(), db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02", func(p SyncProgress) error { last = p; return nil })
+	if err == nil || !strings.Contains(err.Error(), "第 2 页") || report.Created != 2 || report.Updated != 1 || last.DaysProcessed != 1 {
+		t.Fatalf("report=%+v progress=%+v err=%v", report, last, err)
+	}
+	var count int64
+	db.Model(&models.SYBProduct{}).Count(&count)
+	if count != 2 {
+		t.Fatal(count)
+	}
+	f.shortPageAtIndex = 0
+	report, err = Sync(context.Background(), db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02")
+	if err != nil || report.Created != 1 || report.Updated != 3 {
+		t.Fatalf("rerun=%+v err=%v", report, err)
+	}
+	db.Model(&models.SYBProduct{}).Count(&count)
+	if count != 3 {
+		t.Fatal(count)
+	}
+}
+
+func TestPageTransactionRollbackDoesNotPublishCountersAndStopsDates(t *testing.T) {
+	db := newSyncTestDB(t)
+	if err := db.Exec("CREATE TRIGGER reject_second BEFORE INSERT ON syb_product WHEN NEW.detail_id = 10011 BEGIN SELECT RAISE(ABORT, 'test database failure'); END").Error; err != nil {
+		t.Fatal(err)
+	}
+	f := &fakeSYB{perDay: map[string]int{"2026-08-01": 3, "2026-08-02": 1}}
+	report, err := Sync(context.Background(), db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02")
+	var fatal *syncFatalError
+	if !errors.As(err, &fatal) || report.Created != 0 || report.DetailCount != 0 || len(f.listCalls) != 1 {
+		t.Fatalf("report=%+v calls=%v err=%v", report, f.listCalls, err)
+	}
+	var count int64
+	db.Model(&models.SYBProduct{}).Count(&count)
+	if count != 0 {
+		t.Fatal(count)
+	}
+}
+
+func TestPageProgressFailureStopsAfterCommittedPage(t *testing.T) {
+	db := newSyncTestDB(t)
+	f := &fakeSYB{perDay: map[string]int{"2026-08-01": 3, "2026-08-02": 1}}
+	calls := 0
+	report, err := SyncWithProgress(context.Background(), db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02", func(SyncProgress) error {
+		calls++
+		if calls == 2 {
+			return errors.New("progress unavailable")
+		}
+		return nil
+	})
+	if err == nil || report.Created != 2 || len(f.listCalls) != 1 {
+		t.Fatalf("report=%+v err=%v", report, err)
+	}
+}
+
+func TestPageMissingDetailPreservesPriorPageAndContinuesNextDate(t *testing.T) {
+	db := newSyncTestDB(t)
+	f := &fakeSYB{perDay: map[string]int{"2026-08-01": 3, "2026-08-02": 1}, detailDropID: 1002}
+	report, err := Sync(context.Background(), db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02")
+	if err == nil || report.Created != 2 || report.Updated != 1 || report.OrderCount != 4 || len(f.listCalls) != 3 {
+		t.Fatalf("report=%+v err=%v", report, err)
+	}
+}
+
+func TestPageCancellationPreservesCommitAndStopsNextPage(t *testing.T) {
+	db := newSyncTestDB(t)
+	f := &fakeSYB{perDay: map[string]int{"2026-08-01": 3, "2026-08-02": 1}}
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	report, err := SyncWithProgress(ctx, db, newSyncClient(t, f), SyncConfig{PageSize: 2, MaxMatches: 100}, "2026-08-01", "2026-08-02", func(p SyncProgress) error {
+		if p.Report.Created > 0 {
+			cancel()
+		}
+		return nil
+	})
+	if !errors.Is(err, context.Canceled) || report.Created != 2 || len(f.listCalls) != 1 {
+		t.Fatalf("report=%+v err=%v", report, err)
+	}
+}
+
+func TestPartialFinishPreservesProgressReleasesSlotAndIsFilterable(t *testing.T) {
+	db := newSyncTestDB(t)
+	ctx := context.Background()
+	s := NewSyncRunService(db)
+	run, err := s.Create(ctx, CreateSyncRunInput{DateFrom: "2026-08-01", DateTo: "2026-08-02"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	report := SyncReport{Created: 2, DetailCount: 2, ShopBreakdown: map[string]ShopBreakdown{}}
+	if err := s.UpdateProgress(ctx, run.ID, SyncProgress{Report: report, DaysTotal: 2, DaysProcessed: 1}); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Finish(ctx, run.ID, SyncRunPartial, report, errors.New("第 2 页失败")); err != nil {
+		t.Fatal(err)
+	}
+	row, err := s.Detail(ctx, run.ID)
+	if err != nil || row.Status != SyncRunPartial || row.ActiveSlot != nil || row.ProgressPercent != 50 || row.Created != 2 {
+		t.Fatalf("row=%+v err=%v", row, err)
+	}
+	result, err := s.List(ctx, SyncRunListRequest{Page: 1, PageSize: 20, Status: SyncRunPartial})
+	if err != nil || result.Total != 1 {
+		t.Fatalf("result=%+v err=%v", result, err)
+	}
+}
@@ -18,6 +18,7 @@ import (
 const (
 	SyncRunRunning     = "running"
 	SyncRunSucceeded   = "succeeded"
+	SyncRunPartial     = "partial_success"
 	SyncRunFailed      = "failed"
 	SyncRunInterrupted = "interrupted"
 )
@@ -75,7 +76,7 @@ func (s *SyncRunService) UpdateProgress(ctx context.Context, id uint64, progress
 }

 func (s *SyncRunService) Finish(ctx context.Context, id uint64, status string, report SyncReport, runErr error) error {
-	if status != SyncRunSucceeded && status != SyncRunFailed {
+	if status != SyncRunSucceeded && status != SyncRunPartial && status != SyncRunFailed {
 		return fmt.Errorf("invalid terminal sync status %q", status)
 	}
 	payload, err := marshalSyncRunPayload(report.ShopBreakdown, report.ShopFilterSnapshot)
@@ -20,7 +20,7 @@ func (handler Handler) ListSyncRuns(c *gin.Context) {
 		return
 	}
 	status := strings.TrimSpace(c.Query("status"))
-	if status != "" && status != SyncRunRunning && status != SyncRunSucceeded && status != SyncRunFailed && status != SyncRunInterrupted {
+	if status != "" && status != SyncRunRunning && status != SyncRunSucceeded && status != SyncRunPartial && status != SyncRunFailed && status != SyncRunInterrupted {
 		writeError(c, invalidRequest("status 无效"))
 		return
 	}
@@ -36,4 +36,12 @@ func TestSyncRunListAndDetailHandlers(t *testing.T) {
 	if detail.Code != http.StatusOK || !strings.Contains(detail.Body.String(), `"operatorName":"管理员"`) {
 		t.Fatalf("详情响应不正确: %d %s", detail.Code, detail.Body.String())
 	}
+	if err := NewSyncRunService(db).Finish(context.Background(), run.ID, SyncRunPartial, SyncReport{Created: 1}, nil); err != nil {
+		t.Fatal(err)
+	}
+	partial := httptest.NewRecorder()
+	engine.ServeHTTP(partial, httptest.NewRequest(http.MethodGet, "/sync-runs?status=partial_success", nil))
+	if partial.Code != http.StatusOK || !strings.Contains(partial.Body.String(), `"total":1`) {
+		t.Fatalf("partial filter: %d %s", partial.Code, partial.Body.String())
+	}
 }
@@ -9,7 +9,6 @@ import (
 	"net/http/httptest"
 	"strings"
 	"testing"
-	"time"

 	"go-admin/app/goauto/migrations"
 	"go-admin/app/goauto/models"
@@ -276,39 +275,6 @@ func TestSyncStopsWhenTotalDriftsDuringPaging(t *testing.T) {
 	}
 }

-func TestTodaySnapshotDriftRetriesFromFirstPage(t *testing.T) {
-	originalNow := syncNow
-	syncNow = func() time.Time { return time.Date(2026, 8, 29, 12, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60)) }
-	t.Cleanup(func() { syncNow = originalNow })
-	f := &fakeSYB{perDay: map[string]int{"2026-08-29": 10}, totalOverride: map[int]int{1: 11, 2: 10, 3: 10}}
-	rows, err := loadDailyListWithRecovery(context.Background(), newSyncClient(t, f), "2026-08-29", 10, 10, 1000)
-	if err != nil || len(rows) != 10 || f.listTotalCalls != 3 {
-		t.Fatalf("rows=%d totalCalls=%d err=%v", len(rows), f.listTotalCalls, err)
-	}
-}
-
-func TestTodayThirdDriftReturnsValidLastListForDegradedSave(t *testing.T) {
-	originalNow := syncNow
-	syncNow = func() time.Time { return time.Date(2026, 8, 29, 12, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60)) }
-	t.Cleanup(func() { syncNow = originalNow })
-	f := &fakeSYB{perDay: map[string]int{"2026-08-29": 10}, totalOverride: map[int]int{1: 11, 2: 10, 3: 11, 4: 10, 5: 11}}
-	rows, err := loadDailyListWithRecovery(context.Background(), newSyncClient(t, f), "2026-08-29", 10, 10, 1000)
-	if err == nil || len(rows) != 10 || !strings.Contains(err.Error(), "已保存本次取得的完整明细") {
-		t.Fatalf("rows=%d err=%v", len(rows), err)
-	}
-}
-
-func TestHistoricalSnapshotDriftDoesNotRetry(t *testing.T) {
-	originalNow := syncNow
-	syncNow = func() time.Time { return time.Date(2026, 8, 29, 12, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60)) }
-	t.Cleanup(func() { syncNow = originalNow })
-	f := &fakeSYB{perDay: map[string]int{"2026-08-28": 10}, totalOverride: map[int]int{1: 11}}
-	rows, err := loadDailyListWithRecovery(context.Background(), newSyncClient(t, f), "2026-08-28", 10, 10, 1000)
-	if err == nil || rows != nil || f.listTotalCalls != 1 {
-		t.Fatalf("rows=%v totalCalls=%d err=%v", rows, f.listTotalCalls, err)
-	}
-}
-
 // 某页行数少于预期同样是不完整快照。
 func TestSyncStopsOnShortPage(t *testing.T) {
 	db := newSyncTestDB(t)
@@ -36,8 +36,9 @@
      <el-drawer v-model="detail.open" title="同步记录详情" size="760px">
        <div v-loading="detail.loading" class="drawer-body">
          <template v-if="detail.item">
-            <el-alert v-if="detail.item.status === 'failed' || detail.item.status === 'interrupted'" :title="detail.item.errorMessage || statusMeta(detail.item.status).label" :type="detail.item.status === 'failed' ? 'error' : 'warning'" show-icon :closable="false" class="notice" />
+            <el-alert v-if="detail.item.status === 'failed' || detail.item.status === 'interrupted' || detail.item.status === 'partial_success'" :title="detail.item.errorMessage || statusMeta(detail.item.status).label" :type="detail.item.status === 'failed' ? 'error' : 'warning'" show-icon :closable="false" class="notice" />
            <el-alert v-else-if="detail.item.status === 'running'" title="任务正在后台运行，关闭本页不会中断导入。" type="info" show-icon :closable="false" class="notice" />
+            <el-alert v-if="detail.item.status === 'partial_success'" title="已保存的数据会保留。请重新同步该日期范围补齐缺失数据；重跑不会重复新增相同明细。" type="warning" show-icon :closable="false" class="notice" />
            <el-descriptions :column="2" border>
              <el-descriptions-item label="记录编号">{{ detail.item.id }}</el-descriptions-item>
              <el-descriptions-item label="状态"><el-tag :type="statusMeta(detail.item.status).type">{{ statusMeta(detail.item.status).label }}</el-tag></el-descriptions-item>
@@ -81,7 +82,7 @@ export default {
      detail: { open: false, loading: false, item: null },
      statusOptions: [
        { label: '执行中', value: 'running' }, { label: '成功', value: 'succeeded' },
-        { label: '失败', value: 'failed' }, { label: '已中断', value: 'interrupted' }
+        { label: '部分成功', value: 'partial_success' }, { label: '失败', value: 'failed' }, { label: '已中断', value: 'interrupted' }
      ]
    }
  },
@@ -92,7 +93,7 @@ export default {
  created() { this.load().then(() => { const id = Number(this.$route.query.runId); if (id > 0) this.openDetail(id) }) },
  beforeUnmount() { this.stopPolling() },
  methods: {
-    statusMeta(status) { return { running: { label: '执行中', type: 'primary' }, succeeded: { label: '成功', type: 'success' }, failed: { label: '失败', type: 'danger' }, interrupted: { label: '已中断', type: 'warning' }}[status] || { label: status || '-', type: 'info' } },
+    statusMeta(status) { return { running: { label: '执行中', type: 'primary' }, succeeded: { label: '成功', type: 'success' }, partial_success: { label: '部分成功', type: 'warning' }, failed: { label: '失败', type: 'danger' }, interrupted: { label: '已中断', type: 'warning' }}[status] || { label: status || '-', type: 'info' } },
    formatTime(value) { if (!value) return '—'; return new Date(value).toLocaleString('zh-CN', { hour12: false }) },
    async load() {
      this.loading = true; this.loadError = ''
@@ -6,6 +6,34 @@ async function authenticate(context: any) {

 const syncMenu = [{ path: '/syb-sync-runs', component: 'Layout', visible: '0', menuName: 'SybSync', title: 'SYB 同步', children: [{ path: 'index', component: '/goauto/syb-sync-runs/index', visible: '0', menuName: 'GoAutoSybSyncRuns', title: 'SYB 同步记录' }] }];

+test('部分成功可筛选并查看已保存数量和补齐提示', async ({ page, context }) => {
+  await authenticate(context);
+  const item = { id: 239, status: 'partial_success', dateFrom: '2026-08-01', dateTo: '2026-08-02', daysProcessed: 1, daysTotal: 2, progressPercent: 50, created: 2, updated: 1, orderCount: 3, detailCount: 3, acceptedCount: 3, shopSkipped: 0, errorMessage: '2026-08-01 第 2 页读取失败', shopBreakdown: [] };
+  let selected = '';
+  await page.route('**/api/**', route => {
+    const url = new URL(route.request().url());
+    if (url.pathname.startsWith('/src/api/')) return route.continue();
+    if (url.pathname.endsWith('/getinfo')) return route.fulfill({ json: { code: 200, data: { roles: ['purchaser'], name: '测试用户', avatar: '', introduction: '', permissions: [] } } });
+    if (url.pathname.endsWith('/sync-runs/239')) return route.fulfill({ json: { code: 200, data: { item } } });
+    if (url.pathname.endsWith('/sync-runs')) { selected = url.searchParams.get('status') || ''; return route.fulfill({ json: { code: 200, data: { items: [item], total: 1 } } }); }
+    return route.fulfill({ json: { code: 200, data: url.pathname.endsWith('/menurole') ? syncMenu : [] } });
+  });
+  await page.goto('/#/syb-sync-runs/index');
+  await expect(page.locator('.el-table').getByText('部分成功')).toBeVisible();
+  await page.locator('.search-form .el-select').click();
+  await page.getByRole('option', { name: '部分成功' }).click();
+  await page.getByRole('button', { name: '查询', exact: true }).click();
+  await expect.poll(() => selected).toBe('partial_success');
+  await page.getByRole('button', { name: '详情', exact: true }).click();
+  await expect(page.getByText(item.errorMessage)).toBeVisible();
+  await expect(page.getByText('已保存的数据会保留。', { exact: false })).toBeVisible();
+  await expect(page.locator('.el-drawer').getByText('2 / 1', { exact: true })).toBeVisible();
+  await expect.poll(async () => {
+    const box = await page.locator('.el-drawer').boundingBox();
+    return box ? Math.round(box.x + box.width) : 0;
+  }).toBe(page.viewportSize()!.width);
+});
+
 test('同步记录展示失败原因和按店铺统计', async ({ page, context }) => {
  await authenticate(context);
  await page.route('**/api/**', async route => {
Author	SHA1	Message	Date
QiuSWandClaude Opus 5	482ba3408a	docs: sync business rules and code map mirrors for #241 线上 Wiki 已更新并回读： Business-Rules-and-Glossary afb3eb896e41d9aea0f15ad2682ec70b7a3924ea Architecture-and-Code-Map d547c17924ac53422232ad9d6c55a34c8cd8d63c 镜像由 harness.py sync 从线上重建，sync --check 通过，未反向覆盖 Wiki。 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NTDbDcwbDw1TSAcE6wfh2F	2026-09-08 15:24:11 +08:00
QiuSWandClaude Opus 5	ca7f768a79	docs: sync agent API contract mirror for #241 线上 Wiki 页 Android-Agent-API-Contract 已更新并回读，revision 1f5ee1b29c66773fa571d862241b63f02dae283b。本提交只同步镜像头，正文由 harness.py sync 从线上重建，未反向覆盖 Wiki。 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NTDbDcwbDw1TSAcE6wfh2F	2026-09-08 15:14:10 +08:00
QiuSW	72b8b5d4d0	fix(purchase): preserve conflicting order results for manual resolution (#241 )	2026-09-08 15:02:51 +08:00
QiuSW	290a17ea15	feat(purchase): add agent order backfill endpoint (#241 )	2026-09-08 14:41:56 +08:00
QiuSW	fdd26afaf0	docs: record online deployment for #237 and #239	2026-09-08 10:26:01 +08:00
QiuSW	d403f3b3a0	docs(syb): define page commits and partial success contract (#239 )	2026-09-08 09:39:59 +08:00
QiuSW	c6a962d522	fix(syb): persist validated pages and report partial sync success (#239 )	2026-09-08 09:35:36 +08:00