docs: 修正物料导入计划中 Task 5/6 的测试片段笔误

- Task 5：expectImportLog 的行数参数显式转 int64。database/sql 会把实参归一成
  driver.Value（int→int64），sqlmock 按类型比对，传 Go int 必然匹配不上
- Task 5：expectImportLog 补 fileName 参数，模板非法那条用例传的文件名与其它用例不同
- Task 5：事务内 SQL 的期望顺序改为「推进 code_rules → 分批 INSERT」，
  与已提交的 ImportTx 实现（material.go:480 在 :485 之前）一致
- Task 6：测试片段补上缺失的 strings import

按修正后的片段替换 internal/service/material_import_test.go 实跑，5 个用例全通过。

docs/superpowers/plans/2026-10-10-material-bulk-import.md

@@ -1307,9 +1307,14 @@ func expectImportMasterData(mock sqlmock.Sqlmock, withRule bool) {
     }
 }
 
-func expectImportLog(mock sqlmock.Sqlmock, status string, total, success, failed int, reason string) {
+// fileName 由调用方指定：多数用例用「物料.xlsx」，模板非法那条用的是另一个名字。
+// reason 用 interface{}：成功场景断言具体空串，失败场景传 sqlmock.AnyArg() 表示
+// 只校验"写了一条记录"，不锁死文案。
+// 行数显式转 int64：database/sql 会把实参归一成 driver.Value（int→int64），
+// sqlmock 按类型比对，直接传 Go int 匹配不上。
+func expectImportLog(mock sqlmock.Sqlmock, fileName, status string, total, success, failed int, reason interface{}) {
     mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO material_import_logs (organization_id, operator, file_name, total_rows, success_rows, failed_rows, status, failure_reason) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`)).
-        WithArgs(int64(1), "tester", "物料.xlsx", total, success, failed, status, reason).
+        WithArgs(int64(1), "tester", fileName, int64(total), int64(success), int64(failed), status, reason).
         WillReturnResult(sqlmock.NewResult(9, 1))
 }
 
@@ -1318,7 +1323,7 @@ func TestMaterialImportServiceReportsRowErrorsWithoutWritingMaterials(t *testing
     defer cleanup()
 
     expectImportMasterData(mock, true)
-    expectImportLog(mock, "failed", 2, 0, 2, sqlmock.AnyArg())
+    expectImportLog(mock, "物料.xlsx", "failed", 2, 0, 2, sqlmock.AnyArg())
 
     data := buildTestWorkbook(t, [][]string{
         {"", "", "", "机械结构类", "标准件"},        // 名称缺失
@@ -1347,7 +1352,7 @@ func TestMaterialImportServiceReportsMissingCodeRule(t *testing.T) {
     defer cleanup()
 
     expectImportMasterData(mock, false)
-    expectImportLog(mock, "failed", 1, 0, 1, sqlmock.AnyArg())
+    expectImportLog(mock, "物料.xlsx", "failed", 1, 0, 1, sqlmock.AnyArg())
 
     data := buildTestWorkbook(t, [][]string{
         {"螺栓", "", "个", "机械结构类", "标准件"},
@@ -1368,7 +1373,7 @@ func TestMaterialImportServiceRejectsInvalidTemplate(t *testing.T) {
     mock, cleanup := newImportServiceMock(t)
     defer cleanup()
 
-    expectImportLog(mock, "failed", 0, 0, 0, sqlmock.AnyArg())
+    expectImportLog(mock, "错的.xlsx", "failed", 0, 0, 0, sqlmock.AnyArg())
 
     result, err := NewMaterialImportService().Import(1, "tester", "错的.xlsx", strings.NewReader("not an xlsx"))
     if err == nil {
@@ -1387,7 +1392,8 @@ func TestMaterialImportServiceImportsWhenAllRowsValid(t *testing.T) {
     defer cleanup()
 
     expectImportMasterData(mock, true)
-    // 事务内：锁规则 → 取已占用编码 → 插入 → 推进序号 → 回查 ID
+    // 事务内：锁规则 → 取已占用编码 → 推进序号 → 插入 → 回查 ID
+    // ImportTx 先把整批编码分配完并推进 code_rules，再分批插入。
     mock.ExpectBegin()
     mock.ExpectQuery(regexp.QuoteMeta(`SELECT id, organization_id, category_id, prefix, sequence_length, next_sequence FROM code_rules WHERE organization_id = ? AND category_id = ? AND status = 'active' FOR UPDATE`)).
         WithArgs(int64(1), int64(12)).
@@ -1396,15 +1402,15 @@ func TestMaterialImportServiceImportsWhenAllRowsValid(t *testing.T) {
     mock.ExpectQuery(`SELECT material_code FROM materials WHERE organization_id = \? AND material_code LIKE \?`).
         WithArgs(int64(1), "A01%").
         WillReturnRows(sqlmock.NewRows([]string{"material_code"}))
-    mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(31, 1))
     mock.ExpectExec(regexp.QuoteMeta(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`)).
         WithArgs(int64(202), int64(5)).WillReturnResult(sqlmock.NewResult(0, 1))
+    mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(31, 1))
     mock.ExpectQuery(`SELECT id, material_code FROM materials WHERE organization_id = \? AND material_code IN \(\?\)`).
         WithArgs(int64(1), "A010201").
         WillReturnRows(sqlmock.NewRows([]string{"id", "material_code"}).AddRow(31, "A010201"))
     mock.ExpectExec(`INSERT INTO material_logs`).WillReturnResult(sqlmock.NewResult(1, 1))
     mock.ExpectCommit()
-    expectImportLog(mock, "success", 1, 1, 0, "")
+    expectImportLog(mock, "物料.xlsx", "success", 1, 1, 0, "")
 
     data := buildTestWorkbook(t, [][]string{
         {"内六角螺栓", "M8x30", "个", "机械结构类", "标准件"},
@@ -1430,11 +1436,12 @@ func TestMaterialImportServiceRollsBackWhenInsertFails(t *testing.T) {
     mock.ExpectQuery(`FOR UPDATE`).WillReturnRows(sqlmock.NewRows([]string{"id", "organization_id", "category_id", "prefix", "sequence_length", "next_sequence"}).
         AddRow(5, 1, 12, "A01", 4, 201))
     mock.ExpectQuery(`SELECT material_code FROM materials`).WillReturnRows(sqlmock.NewRows([]string{"material_code"}))
-    mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(0, 0))
     mock.ExpectExec(regexp.QuoteMeta(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`)).WillReturnResult(sqlmock.NewResult(0, 1))
+    mock.ExpectExec(`INSERT INTO materials`).WillReturnResult(sqlmock.NewResult(0, 0))
+    // 插入后回查不到 ID（模拟插入未真正落库），persist 据此报错并回滚
     mock.ExpectQuery(`SELECT id, material_code FROM materials`).WillReturnRows(sqlmock.NewRows([]string{"id", "material_code"}))
     mock.ExpectRollback()
-    expectImportLog(mock, "failed", 1, 0, 1, sqlmock.AnyArg())
+    expectImportLog(mock, "物料.xlsx", "failed", 1, 0, 1, sqlmock.AnyArg())
 
     data := buildTestWorkbook(t, [][]string{
         {"内六角螺栓", "M8x30", "个", "机械结构类", "标准件"},
@@ -1810,6 +1817,7 @@ package handler
 import (
     "net/http"
     "net/http/httptest"
+    "strings"
     "testing"
 
     "github.com/gin-gonic/gin"