diff --git a/server/app/goauto/shopeeproduct/auto_match_scan_test.go b/server/app/goauto/shopeeproduct/auto_match_scan_test.go
index 19a2b86..e8451ee 100644
--- a/server/app/goauto/shopeeproduct/auto_match_scan_test.go
+++ b/server/app/goauto/shopeeproduct/auto_match_scan_test.go
@@ -18,6 +18,23 @@ import (
 const sizeScanSpecs = `[{"name":"尺码","role":"size","values":[{"name":"XL","source":"import"}]}]`
 const otherScanSpecs = `[{"name":"材质","role":"other","values":[{"name":"棉","source":"import"}]}]`
 
+func openScanTestDB(t *testing.T) *gorm.DB {
+	t.Helper()
+	db := openTestDB(t)
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Closing the final connection releases the named in-memory database,
+	// including when go test repeats the same t.Name via -count.
+	t.Cleanup(func() {
+		if err := sqlDB.Close(); err != nil {
+			t.Errorf("close scan test database: %v", err)
+		}
+	})
+	return db
+}
+
 func seedScanProducts(t *testing.T, db *gorm.DB, pddID uint64, count int, specs string) []models.ShopeeProduct {
 	t.Helper()
 	products := make([]models.ShopeeProduct, count)
@@ -62,7 +79,7 @@ func scanCheckpoint(t *testing.T, run *AutoMatchRunView, cursor uint64, reason s
 }
 
 func TestAutoMatchScanPassesLongEmptyPrefix(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	seedScanProducts(t, db, pdd.ID, 1812, `[]`)
 	seedScanProducts(t, db, pdd.ID, 1, sizeScanSpecs)
@@ -74,7 +91,7 @@ func TestAutoMatchScanPassesLongEmptyPrefix(t *testing.T) {
 }
 
 func TestAutoMatchScanRotatesAcrossServiceRestart(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	prefix := seedScanProducts(t, db, pdd.ID, 2001, otherScanSpecs)
 	seedScanProducts(t, db, pdd.ID, 1, sizeScanSpecs)
@@ -98,7 +115,7 @@ func TestAutoMatchScanRotatesAcrossServiceRestart(t *testing.T) {
 }
 
 func TestAutoMatchScanBatchLimitKeepsLastExaminedOnShortPage(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	products := seedScanProducts(t, db, pdd.ID, 3, sizeScanSpecs)
 	for i := 0; i < 3; i++ {
@@ -115,7 +132,7 @@ func TestAutoMatchScanBatchLimitKeepsLastExaminedOnShortPage(t *testing.T) {
 }
 
 func TestAutoMatchScanExactBudgetDoesNotAssumeEnd(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	products := seedScanProducts(t, db, pdd.ID, 2000, otherScanSpecs)
 	first := runScan(t, NewService(db), 20)
@@ -130,7 +147,7 @@ func TestAutoMatchScanExactBudgetDoesNotAssumeEnd(t *testing.T) {
 func TestAutoMatchEligibilityRejectsUnusableSpecsBeforePDDRead(t *testing.T) {
 	for i, specs := range []string{"", `[]`, `null`, `""`, otherScanSpecs, `[{"role":"size","values":[]}]`, `[{"role":"color","values":[{"name":"  "}]}]`} {
 		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			missing := uint64(999)
 			_, eligible, err := NewService(db).autoMatchEligibility(context.Background(), models.ShopeeProduct{PDDProductID: &missing, SpecsJSON: specs})
 			if err != nil || eligible {
@@ -141,7 +158,7 @@ func TestAutoMatchEligibilityRejectsUnusableSpecsBeforePDDRead(t *testing.T) {
 }
 
 func TestAutoMatchScanEmptyRepresentationsAndSingleDimension(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	for _, specs := range []string{`[]`, `null`, `""`} {
 		seedScanProducts(t, db, pdd.ID, 1, specs)
@@ -157,7 +174,7 @@ func TestAutoMatchScanEmptyRepresentationsAndSingleDimension(t *testing.T) {
 func TestAutoMatchScanLatestCommittedZeroWinsAndNullIsIgnored(t *testing.T) {
 	for _, latest := range []uint64{0, 2} {
 		t.Run(fmt.Sprint(latest), func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			pdd := seedPDDProduct(t, db, "active")
 			products := seedScanProducts(t, db, pdd.ID, 3, otherScanSpecs)
 			old := uint64(1)
@@ -179,7 +196,7 @@ func TestAutoMatchScanLatestCommittedZeroWinsAndNullIsIgnored(t *testing.T) {
 func TestAutoMatchRenewAndFinishRejectLostLease(t *testing.T) {
 	for _, change := range []string{"owner", "expired", "slot", "status"} {
 		t.Run(change, func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			s := NewService(db)
 			run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 			if err != nil {
@@ -218,7 +235,7 @@ func TestAutoMatchRenewAndFinishRejectLostLease(t *testing.T) {
 }
 
 func TestAutoMatchScanDatabaseErrorDoesNotCommitCheckpoint(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	products := seedScanProducts(t, db, pdd.ID, 2, sizeScanSpecs)
 	s := NewService(db)
@@ -255,7 +272,7 @@ func TestAutoMatchScanDatabaseErrorDoesNotCommitCheckpoint(t *testing.T) {
 func TestAutoMatchClaimRejectsLostOrExpiredRun(t *testing.T) {
 	for _, change := range []string{"owner", "expired", "slot", "status"} {
 		t.Run(change, func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			s := NewService(db)
 			run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 			if err != nil {
@@ -291,7 +308,7 @@ func TestAutoMatchClaimRejectsLostOrExpiredRun(t *testing.T) {
 }
 
 func TestAutoMatchScanOwnerLossDuringProviderStopsNextCallAndSave(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	s := NewService(db)
 	pdd := seedPDDProduct(t, db, "active")
 	products := seedScanProducts(t, db, pdd.ID, 2, `[{"name":"颜色","role":"color","values":[{"name":"深黑","source":"import"}]},{"name":"尺码","role":"size","values":[{"name":"大号","source":"import"}]}]`)
@@ -342,7 +359,7 @@ func TestAutoMatchScanOwnerLossDuringProviderStopsNextCallAndSave(t *testing.T)
 }
 
 func TestAutoMatchScanDeadlineStopsProviderAndKeepsLastDecision(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	first := seedScanProducts(t, db, pdd.ID, 1, otherScanSpecs)[0]
 	products := seedScanProducts(t, db, pdd.ID, 2, `[{"name":"颜色","role":"color","values":[{"name":"深黑","source":"import"}]}]`)
@@ -394,7 +411,7 @@ func TestAutoMatchScanDeadlineStopsProviderAndKeepsLastDecision(t *testing.T) {
 }
 
 func TestAutoMatchScanDeadlineBoundsDatabaseAndNoClaimAfterBudget(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	seedScanProducts(t, db, pdd.ID, 2, sizeScanSpecs)
 	s := NewService(db)
@@ -439,7 +456,7 @@ func TestAutoMatchScanDeadlineBoundsDatabaseAndNoClaimAfterBudget(t *testing.T)
 }
 
 func TestAutoMatchScanRecoveryIgnoresExpiredCheckpoint(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	s := NewService(db)
 	run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 	if err != nil {
@@ -461,7 +478,7 @@ func TestAutoMatchScanRecoveryIgnoresExpiredCheckpoint(t *testing.T) {
 }
 
 func TestAutoMatchScanExactPageBoundaryAndCandidateFilters(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	seedScanProducts(t, db, pdd.ID, 200, otherScanSpecs)
 	seedScanProducts(t, db, pdd.ID, 1, sizeScanSpecs)
@@ -485,7 +502,7 @@ func TestAutoMatchScanExactPageBoundaryAndCandidateFilters(t *testing.T) {
 func TestAutoMatchWorkRetryAndCooldownPreserved(t *testing.T) {
 	for _, status := range []string{"completed", "unmatched", "max_retry", "cooldown", "occupied", "retryable"} {
 		t.Run(status, func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			s := NewService(db)
 			run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 			if err != nil {
@@ -534,7 +551,7 @@ func TestAutoMatchWorkRetryAndCooldownPreserved(t *testing.T) {
 }
 
 func TestAutoMatchClaimDoesNotUseLeaseTimeBeforeLockWait(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	s := NewService(db)
 	run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 	if err != nil {
@@ -558,7 +575,7 @@ func TestAutoMatchClaimDoesNotUseLeaseTimeBeforeLockWait(t *testing.T) {
 }
 
 func TestAutoMatchProviderGuardDatabaseErrorMustNotRetryOrCheckpoint(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	seedScanProducts(t, db, pdd.ID, 1, `[{"name":"颜色","role":"color","values":[{"name":"深黑","source":"import"}]}]`)
 	var calls atomic.Int32
@@ -603,7 +620,7 @@ func TestAutoMatchProviderGuardDatabaseErrorMustNotRetryOrCheckpoint(t *testing.
 }
 
 func TestAutoMatchProviderSettingsDatabaseErrorMustNotRetryOrCheckpoint(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	pdd := seedPDDProduct(t, db, "active")
 	seedScanProducts(t, db, pdd.ID, 1, `[{"name":"颜色","role":"color","values":[{"name":"深黑","source":"import"}]}]`)
 	var calls atomic.Int32
@@ -648,7 +665,7 @@ func TestAutoMatchProviderSettingsDatabaseErrorMustNotRetryOrCheckpoint(t *testi
 func TestAutoMatchRunDatabaseWriteFailuresAreReturned(t *testing.T) {
 	for _, operation := range []string{"renew", "finish", "work"} {
 		t.Run(operation, func(t *testing.T) {
-			db := openTestDB(t)
+			db := openScanTestDB(t)
 			s := NewService(db)
 			run, _, err := s.StartAutoMatchRun(context.Background(), "manual", uuid.NewString(), nil, 20)
 			if err != nil {
@@ -686,7 +703,7 @@ func TestAutoMatchRunDatabaseWriteFailuresAreReturned(t *testing.T) {
 }
 
 func TestAutoMatchDeadlineDuringCheckpointReadCannotCommitFalseHead(t *testing.T) {
-	db := openTestDB(t)
+	db := openScanTestDB(t)
 	s := NewService(db)
 	checkpoint := uint64(1700)
 	old := models.ShopeeSpecAutoMatchRun{RequestID: uuid.NewString(), Trigger: "manual", Status: "completed", ResumeAfterID: &checkpoint}