优化后台高频查询性能

backend/internal/e2e/rental_flow_test.go

@@ -313,7 +313,15 @@ func applyMigrations(t *testing.T, db *sql.DB) {
 		t.Fatal("无法定位当前测试文件")
 	}
 	migrationDir := filepath.Join(filepath.Dir(currentFile), "..", "..", "migrations")
-	for _, name := range []string{"000001_init.sql", "000002_dispute_cancel_snapshot.sql"} {
+	entries, err := os.ReadDir(migrationDir)
+	if err != nil {
+		t.Fatalf("读取迁移目录失败: %v", err)
+	}
+	for _, entry := range entries {
+		if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".sql") {
+			continue
+		}
+		name := entry.Name()
 		migrationPath := filepath.Join(migrationDir, name)
 		raw, err := os.ReadFile(migrationPath)
 		if err != nil {