chore: release server-v1.0.81

修复入库单/出库单按商品名搜不到历史导入单：搜索酒名条件由 COALESCE(被占位名劫持) 改为 p.name OR it.product_name 任一命中，并加回归测试。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YZ4DskSRKsSiheQonFtQvx

backend/internal/handler/stock_in_test.go

@@ -263,7 +263,7 @@ func TestStockInHandler_TotalAmount(t *testing.T) {
 		"warehouse_id": warehouse.ID,
 		"order_date":   time.Now().Format(time.RFC3339),
 		"items": []map[string]interface{}{
-			{"product_id": product1.ID, "quantity": 10.0, "unit_price": 5.0},  // 50
+			{"product_id": product1.ID, "quantity": 10.0, "unit_price": 5.0}, // 50
 			{"product_id": product2.ID, "quantity": 3.0, "unit_price": 20.0}, // 60
 		},
 	})
@@ -487,6 +487,49 @@ func TestStockInHandler_List_FilterByProductName(t *testing.T) {
 	assert.Equal(t, float64(2), parseResponse(w)["total"].(float64))
 }
 
+// 回归：历史导入单的明细 product_id 统一指向占位商品「历史导入占位」（p.name 非空），
+// 真实酒名只在快照列 product_name。修复前搜索用 COALESCE(NULLIF(p.name,”), product_name)
+// 被占位名劫持，导入单按真实酒名搜不到；修复后「p.name OR product_name」任一命中。
+func TestStockInHandler_List_FilterByImportedSnapshotName(t *testing.T) {
+	db := testutil.SetupTestDB()
+	shop := testutil.CreateTestShop(db, "SI012B")
+	user := testutil.CreateTestUser(db, shop.ID, "admin", "pass", "admin")
+	warehouse := testutil.CreateTestWarehouse(db, shop.ID, "Warehouse")
+	token := getAuthToken(user.ID, shop.ID, "admin")
+	r := setupProtectedRouter(db)
+
+	// 占位商品：名「历史导入占位」，编码 HIST-PLACEHOLDER（模拟 import-history）
+	placeholder := &model.Product{
+		TenantBase: model.TenantBase{ShopID: shop.ID},
+		Name:       "历史导入占位",
+		Code:       "HIST-PLACEHOLDER",
+	}
+	require.NoError(t, db.Create(placeholder).Error)
+
+	// 导入单：明细 product_id 指向占位商品，真实酒名「飞天茅台」仅在快照 product_name
+	order := &model.StockInOrder{
+		TenantBase:  model.TenantBase{ShopID: shop.ID},
+		OrderNo:     "RK-IMPORT-001",
+		WarehouseID: warehouse.ID,
+		OperatorID:  user.ID,
+		Status:      "approved",
+		OrderDate:   model.Date{Time: time.Now()},
+	}
+	require.NoError(t, db.Create(order).Error)
+	require.NoError(t, db.Create(&model.StockInItem{
+		OrderID:     order.ID,
+		ShopID:      shop.ID,
+		ProductID:   placeholder.ID,
+		ProductCode: "ZXZ000010",
+		ProductName: "飞天茅台",
+		Quantity:    5.0,
+	}).Error)
+
+	// 按真实酒名搜 → 命中导入单（修复前为 0）
+	w := makeRequest(r, "GET", "/api/v1/stock-in/orders?keyword=茅台", token, nil)
+	assert.Equal(t, float64(1), parseResponse(w)["total"].(float64))
+}
+
 func TestStockInHandler_List_FilterByProductPinyin(t *testing.T) {
 	db := testutil.SetupTestDB()
 	shop := testutil.CreateTestShop(db, "SI013")