Refactor user and credential handling: rename Creds to User, update database migrations, and add targets subcommand for exporting users and subdomains

internal/sqlite/subdomains.go

@@ -0,0 +1,45 @@
+package sqlite
+
+import (
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type Subdomain struct {
+	gorm.Model
+	Domain    string `json:"domain" yaml:"domain" xml:"domain"`
+	Subdomain string `json:"subdomain" yaml:"subdomain" xml:"subdomain" gorm:"uniqueIndex:idx_subdomain"`
+}
+
+func StoreSubdomains(subs []Subdomain) error {
+	if len(subs) == 0 {
+		return nil
+	}
+
+	zap.L().Info("Storing subdomains", zap.Int("count", len(subs)))
+	db := GetDB()
+
+	// Use batch insert with conflict handling
+	// This will insert records in batches and continue even if some fail
+	const batchSize = 100
+	var lastErr error
+
+	for i := 0; i < len(subs); i += batchSize {
+		end := i + batchSize
+		if end > len(subs) {
+			end = len(subs)
+		}
+
+		batch := subs[i:end]
+		// Use Clauses with OnConflict DoNothing to skip conflicts
+		err := db.Clauses(clause.OnConflict{DoNothing: true}).CreateInBatches(&batch, batchSize).Error
+		if err != nil {
+			zap.L().Warn("Error storing some credentials", zap.Error(err))
+			lastErr = err
+			// Continue with next batch despite error
+		}
+	}
+
+	return lastErr
+}