테넌트 목록 조회 cursor기반으로 재구성. 사용자 metadata 미사용 필드 제거

backend/internal/bootstrap/user_metadata_sanitize.go

@@ -0,0 +1,34 @@
+package bootstrap
+
+import (
+	"fmt"
+	"log/slog"
+
+	"gorm.io/gorm"
+)
+
+const sanitizeLegacyUserMetadataSQL = `
+update users
+set metadata = metadata - 'hanmacFamily' - 'userType',
+    updated_at = now()
+where metadata ? 'hanmacFamily'
+   or metadata ? 'userType'
+`
+
+// SanitizeLegacyUserMetadata removes legacy UI classification flags from Baron user metadata.
+func SanitizeLegacyUserMetadata(db *gorm.DB) error {
+	if db == nil {
+		return fmt.Errorf("database is not configured")
+	}
+	if !db.Migrator().HasTable("users") {
+		slog.Info("[Bootstrap] Legacy user metadata sanitize skipped because users table does not exist")
+		return nil
+	}
+
+	result := db.Exec(sanitizeLegacyUserMetadataSQL)
+	if result.Error != nil {
+		return fmt.Errorf("sanitize legacy user metadata: %w", result.Error)
+	}
+	slog.Info("[Bootstrap] Legacy user metadata sanitized", "rowsAffected", result.RowsAffected)
+	return nil
+}