diff --git a/api_v1/urls.py b/api_v1/urls.py
index b03ac7c..df616e8 100644
--- a/api_v1/urls.py
+++ b/api_v1/urls.py
@@ -9,6 +9,7 @@ from .views import (
     stateflow,
     users,
     print_count,
+    tiia,
 )
 from .views.business.purchase import views as purchase_views
 from .views.business.sales import views as sales_views
@@ -100,6 +101,9 @@ urlpatterns = [
     
     # 产品图片上传 API
     path('products/<int:product_id>/image/', product_image.ProductImageUploadView.as_view(), name='product_image_upload'),
+
+    # Tencent Cloud (TIIA) API
+    path('tiia/search-image/', tiia.TiiaSearchImageView.as_view(), name='tiia_search_image'),
     
     # Stateflow API (使用 Router)
     path('stateflow/', include(stateflow_router.urls)),
diff --git a/api_v1/utils/tencentcloud_tiia.py b/api_v1/utils/tencentcloud_tiia.py
index 7394430..918e0fe 100644
--- a/api_v1/utils/tencentcloud_tiia.py
+++ b/api_v1/utils/tencentcloud_tiia.py
@@ -45,6 +45,90 @@ class SimpleRateLimiter:
             time.sleep(self._min_interval - elapsed)
         self._last_ts = time.monotonic()
 
+def search_image_url_in_tencent_tiia(
+    *,
+    image_url: str,
+    limit: int | None = 10,
+    offset: int | None = 0,
+    match_threshold: int | None = None,
+    rate_limiter: SimpleRateLimiter | None = None,
+) -> dict:
+    """
+    Search an image by URL in Tencent Cloud TIIA gallery using SearchImage.
+
+    This is the counterpart of CreateImage (upload) and is typically used for "similar image search".
+
+    Required settings:
+    - TENCENTCLOUD_SECRET_ID
+    - TENCENTCLOUD_SECRET_KEY
+    - TENCENTCLOUD_TIIA_GROUP_ID
+
+    Optional settings:
+    - TENCENTCLOUD_TOKEN                      (STS token, if applicable)
+    - TENCENTCLOUD_TIIA_REGION                (default: ap-guangzhou)
+    - TENCENTCLOUD_TIIA_ENDPOINT              (default: tiia.tencentcloudapi.com)
+
+    Args:
+        image_url: Absolute URL to search.
+        limit/offset/match_threshold: Optional SearchImage request parameters.
+        rate_limiter: Optional in-process limiter to keep requests under QPS.
+
+    Returns:
+        Parsed JSON response dict from TencentCloud SDK.
+    """
+    image_url = (image_url or '').strip()
+    if not image_url:
+        raise ValueError('image_url 不能为空')
+
+    parsed = urlparse(image_url)
+    if not (parsed.scheme and parsed.netloc):
+        raise ValueError('image_url 必须为绝对 URL（包含 scheme 与 host）')
+
+    group_id = (getattr(settings, 'TENCENTCLOUD_TIIA_GROUP_ID', '') or '').strip()
+    if not group_id:
+        raise ValueError('缺少 settings: TENCENTCLOUD_TIIA_GROUP_ID')
+
+    secret_id = (getattr(settings, 'TENCENTCLOUD_SECRET_ID', '') or '').strip()
+    secret_key = (getattr(settings, 'TENCENTCLOUD_SECRET_KEY', '') or '').strip()
+    token = (getattr(settings, 'TENCENTCLOUD_TOKEN', '') or '').strip() or None
+    if not secret_id or not secret_key:
+        raise ValueError('缺少 settings: TENCENTCLOUD_SECRET_ID / TENCENTCLOUD_SECRET_KEY')
+
+    region = (getattr(settings, 'TENCENTCLOUD_TIIA_REGION', None) or 'ap-guangzhou').strip()
+    endpoint = (getattr(settings, 'TENCENTCLOUD_TIIA_ENDPOINT', None) or 'tiia.tencentcloudapi.com').strip()
+
+    try:
+        from tencentcloud.common import credential
+        from tencentcloud.common.profile.client_profile import ClientProfile
+        from tencentcloud.common.profile.http_profile import HttpProfile
+        from tencentcloud.tiia.v20190529 import tiia_client, models
+    except Exception as e:  # pragma: no cover
+        raise RuntimeError(
+            "TencentCloud SDK 未安装或不可用，请先安装依赖：tencentcloud-sdk-python"
+        ) from e
+
+    if rate_limiter is not None:
+        rate_limiter.wait()
+
+    cred = credential.Credential(secret_id, secret_key, token)
+    http_profile = HttpProfile(endpoint=endpoint, reqTimeout=30)
+    client_profile = ClientProfile(httpProfile=http_profile)
+    client = tiia_client.TiiaClient(cred, region, client_profile)
+
+    req = models.SearchImageRequest()
+    req.GroupId = str(group_id)
+    req.ImageUrl = str(image_url)
+
+    if limit is not None:
+        req.Limit = int(limit)
+    if offset is not None:
+        req.Offset = int(offset)
+    if match_threshold is not None:
+        req.MatchThreshold = int(match_threshold)
+
+    resp = client.SearchImage(req)
+    return json.loads(resp.to_json_string())
+
 
 def upload_image_url_to_tencent_tiia(*, image_url: str, entity_id: str) -> dict:
     """
@@ -239,6 +323,7 @@ def upload_plate_order_images_to_tencent_tiia(*, plate_order_id: int, rate_limit
 __all__ = [
     'SimpleRateLimiter',
     'upload_image_url_to_tencent_tiia',
+    'search_image_url_in_tencent_tiia',
     'upload_plate_order_images_to_tencent_tiia',
 ]
 
diff --git a/api_v1/views/test_tiia_search_image_api.py b/api_v1/views/test_tiia_search_image_api.py
new file mode 100644
index 0000000..1fa8a3b
--- /dev/null
+++ b/api_v1/views/test_tiia_search_image_api.py
@@ -0,0 +1,50 @@
+"""
+TIIA SearchImage simplified API tests.
+"""
+
+from django.contrib.auth import get_user_model
+from django.test import TestCase
+from rest_framework import status
+from rest_framework.test import APIClient
+from unittest.mock import patch
+
+
+User = get_user_model()
+
+
+class TiiaSearchImageAPITestCase(TestCase):
+    def setUp(self):
+        self.client = APIClient()
+        self.user = User.objects.create_user(
+            username='test_tiia_search_user',
+            password='testpass123',
+            email='test_tiia_search@example.com',
+        )
+
+    def test_search_image_unauthenticated(self):
+        resp = self.client.post(
+            '/api/v1/tiia/search-image/',
+            data={'imageUrl': 'https://example.com/a.png'},
+            format='json',
+        )
+        self.assertEqual(resp.status_code, status.HTTP_401_UNAUTHORIZED)
+
+    @patch('api_v1.views.tiia.search_image_url_in_tencent_tiia')
+    def test_search_image_success(self, mock_search):
+        self.client.force_authenticate(self.user)
+        mock_search.return_value = {'Candidates': [{'EntityId': '1', 'Score': 99}]}
+
+        resp = self.client.post(
+            '/api/v1/tiia/search-image/',
+            data={'imageUrl': 'https://example.com/a.png'},
+            format='json',
+        )
+        self.assertEqual(resp.status_code, status.HTTP_200_OK)
+        self.assertEqual(resp.json(), {'Candidates': [{'EntityId': '1', 'Score': 99}]})
+
+    def test_search_image_missing_image_url(self):
+        self.client.force_authenticate(self.user)
+        resp = self.client.post('/api/v1/tiia/search-image/', data={}, format='json')
+        self.assertEqual(resp.status_code, status.HTTP_400_BAD_REQUEST)
+        self.assertIn('error', resp.json())
+
diff --git a/api_v1/views/tiia.py b/api_v1/views/tiia.py
new file mode 100644
index 0000000..058747d
--- /dev/null
+++ b/api_v1/views/tiia.py
@@ -0,0 +1,57 @@
+"""
+Tencent Cloud TIIA simplified APIs.
+
+Currently provides:
+- SearchImage (by ImageUrl) with fixed groupId/region from settings.
+"""
+
+from rest_framework import status
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from django.conf import settings
+
+from api_v1.utils.tencentcloud_tiia import SimpleRateLimiter, search_image_url_in_tencent_tiia
+
+
+class TiiaSearchImageView(APIView):
+    """
+    Tencent Cloud TIIA: SearchImage (simplified)
+
+    POST /api/v1/tiia/search-image/
+
+    Body:
+    {
+        "imageUrl": "https://example.com/xxx.png"
+    }
+
+    Notes:
+    - groupId/region/endpoint are configured via Django settings (TENCENTCLOUD_TIIA_*).
+    - Enforces QPS using settings.TENCENTCLOUD_TIIA_QPS (default 10).
+    """
+
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request):
+        image_url = (
+            request.data.get('imageUrl')
+            or request.data.get('ImageUrl')
+            or request.data.get('image_url')
+            or request.data.get('ImageURL')
+        )
+        try:
+            limiter = SimpleRateLimiter(qps=float(getattr(settings, 'TENCENTCLOUD_TIIA_QPS', 10)))
+            resp = search_image_url_in_tencent_tiia(
+                image_url=str(image_url or ''),
+                rate_limiter=limiter,
+            )
+            return Response(resp, status=status.HTTP_200_OK)
+        except ValueError as e:
+            return Response({'error': str(e)}, status=status.HTTP_400_BAD_REQUEST)
+        except Exception as e:
+            return Response(
+                {'error': '腾讯云搜图失败', 'message': str(e)},
+                status=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            )
+
diff --git a/docs/2026-01-16_summary.md b/docs/2026-01-16_summary.md
index 80a13be..0db1f94 100644
--- a/docs/2026-01-16_summary.md
+++ b/docs/2026-01-16_summary.md
@@ -13,6 +13,9 @@
 - 为 `GET /api/v1/stateflow/business-objects/` 增加过滤条件：`state_id` + `param_key` + `param_value`
 - 增加 PostgreSQL JSONB 查询性能优化：为 `StateLogParameterRecord.parameters` 添加 GIN（`jsonb_path_ops`）索引
 - 补齐/更新测试用例，验证过滤行为与撤销记录处理
+- 输出该查询能力的单独说明文档（用途/出入参/示例/性能与索引）
+- Shipment 模块：为 `Shipment` 增加 `area` 字段并贯通所有相关 API（create/update/返回/文档/测试）
+- Printing/定时任务：实现“PlateOrder 图片按 URL 上传到腾讯云图库”的能力（上传函数/按 plate_order_id 批量上传/每日 03:00 定时任务/限速/失败落库）
 
 ---
 
@@ -49,3 +52,94 @@
 
 另外，为保证 `stateflow` 测试集可持续运行，恢复了 `stateflow.services.clone_business_object()` 的实现（此前曾临时禁用导致测试失败）。
 
+### 4) 单独说明文档（stateflow 查询能力）
+
+新增文档：`docs/stateflow_business_objects_query_by_completed_state_and_param.md`，包含：
+
+- 能力用途/背景（“已完成某节点 + 工艺参数 key/value”反查 `BusinessObject`）
+- 接口定义与查询参数（`state_id/param_key/param_value` 与 `content_type_str` 的配套用法）
+- 过滤语义（排除撤销记录、参数绑定范围）
+- 返回结构（与 `BusinessObjectListSerializer` 对齐）
+- 性能建议（GIN 索引与验证方式）
+
+### 5) Shipment：增加 area 字段并贯通 API（create/update/返回/文档/测试）
+
+新增字段：
+
+- `shipment.models.Shipment.area`：`CharField(max_length=30, blank=True, default='')`
+- 迁移：`shipment/migrations/0008_add_area_to_shipment.py`
+
+接口/序列化器调整：
+
+- `api_v1/views/shipment/serializers.py`
+  - `ShipmentSerializer`：响应中新增 `area`
+  - `ShipmentCreateNormalSerializer` / `ShipmentCreateExternalSerializer`：支持写入 `area`
+  - 新增 `ShipmentUpdateSerializer`：用于更新入口（PATCH/PUT）
+- `api_v1/views/shipment/views.py`
+  - 普通创建与 external 创建：将 `area` 透传并落库
+  - `ShipmentDetailView`：新增 `PATCH/PUT /api/v1/shipment/shipments/<id>/`，支持更新 `area` 并回显（同时保持 merchant 隔离与 customer 校验）
+- `shipment/services.py`：`create_shipment/create_external_shipment` 支持 `area` 并写入
+
+测试与文档：
+
+- `api_v1/views/shipment/test_api.py`：补齐 create 回显 + PATCH 更新回显用例
+- `docs/shipment_api.md`：补齐 `area` 的请求/响应示例与字段说明
+
+### 6) Printing：PlateOrder 图片上传腾讯云图库（函数 + 定时任务 + 限速 + 失败落库）
+
+依赖：
+
+- `pyproject.toml`：加入 `tencentcloud-sdk-python`（TIIA SDK）
+
+上传函数（基础能力）：
+
+- `api_v1/utils/tencentcloud_tiia.py`
+  - `upload_image_url_to_tencent_tiia(image_url, entity_id)`：调用 TIIA `CreateImage`，通过 URL 上传图片到图库
+  - 腾讯云凭证/配置改为从 `flower/settings.py` 读取（支持 `.env` 注入）
+  - `SimpleRateLimiter`：简单限速器，确保不超过 10 次/秒（可由 `TENCENTCLOUD_TIIA_QPS` 配置）
+
+按 PlateOrder 批量上传（包装函数）：
+
+- `api_v1/utils/tencentcloud_tiia.py`
+  - `upload_plate_order_images_to_tencent_tiia(plate_order_id, rate_limiter=...)`
+  - 从 `PlateOrder.plate_image(JSONField)` 提取所有图片 URL/Path（兼容 `url/path/imageUrl/字符串`），逐张上传
+  - `entity_id` 统一使用 `str(plate_order_id)`
+
+每日定时任务（03:00 跑“昨天创建的订单”）：
+
+- `printing/tasks.py`
+  - `upload_yesterday_plate_order_images_to_tencent_tiia`
+  - 扫描昨天创建的 PlateOrder，逐单上传；遇错记录失败 ID 并继续
+- `flower/settings.py`
+  - `CELERY_BEAT_SCHEDULE` 新增 `daily_plate_order_tiia_image_upload`（03:00）
+
+失败记录表（用于可追踪/可重试）：
+
+- `printing.models.PlateOrderTiiaUploadFailure`
+  - 字段：`run_date/plate_order_id/error/details/attempts/last_attempt_at`
+  - 唯一约束：`(run_date, plate_order_id)`，重复失败会累加 `attempts`
+  - 迁移：`printing/migrations/0031_plateorder_tiia_upload_failure.py`
+- `printing/admin.py`：在 admin 中注册失败记录表，便于排查
+
+测试：
+
+- `api_v1/test_tencentcloud_tiia_plate_order_upload.py`：mock uploader，验证包装函数能提取并上传多张图片、entity_id 绑定正确
+- `printing/test_tiia_upload_task.py`：mock uploader + sleep，验证“记录失败 ID 但不中断继续执行”
+
+补充配置项（settings）：
+
+- `flower/settings.py`
+  - `TENCENTCLOUD_SECRET_ID / TENCENTCLOUD_SECRET_KEY / TENCENTCLOUD_TOKEN`
+  - `TENCENTCLOUD_TIIA_GROUP_ID / TENCENTCLOUD_TIIA_REGION / TENCENTCLOUD_TIIA_ENDPOINT`
+  - `TENCENTCLOUD_TIIA_PIC_NAME_PREFIX`
+  - `TENCENTCLOUD_TIIA_QPS`（默认 10，用于任务限速）
+
+### 7) 临时跑批（一次性全量上传现有 PlateOrder）
+
+为支持上线前手工验证/补数据，提供了可直接在 `manage.py shell` 中执行的一次性跑批脚本（遍历全部 `PlateOrder`，逐单上传 `plate_image` 里的所有图片，遇错记录失败 ID 并继续）。
+
+说明：
+
+- `entity_id` 使用 `plate_order_id`
+- 通过 `SimpleRateLimiter(qps=10)` 遵守腾讯云限速
+- 失败会写入 `PlateOrderTiiaUploadFailure`（便于后续排查与重试）