Fix local pricelist uniqueness and preserve config project on update

internal/localdb/localdb.go

@@ -12,10 +12,11 @@ import (
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/appmeta"
-	mysqlDriver "github.com/go-sql-driver/mysql"
 	"github.com/glebarez/sqlite"
+	mysqlDriver "github.com/go-sql-driver/mysql"
 	uuidpkg "github.com/google/uuid"
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 	"gorm.io/gorm/logger"
 )
 
@@ -557,7 +558,16 @@ func (l *LocalDB) GetLocalPricelistByID(id uint) (*LocalPricelist, error) {
 
 // SaveLocalPricelist saves a pricelist to local SQLite
 func (l *LocalDB) SaveLocalPricelist(pricelist *LocalPricelist) error {
-	return l.db.Save(pricelist).Error
+	return l.db.Clauses(clause.OnConflict{
+		Columns: []clause.Column{{Name: "server_id"}},
+		DoUpdates: clause.Assignments(map[string]interface{}{
+			"version":    pricelist.Version,
+			"name":       pricelist.Name,
+			"created_at": pricelist.CreatedAt,
+			"synced_at":  pricelist.SyncedAt,
+			"is_used":    pricelist.IsUsed,
+		}),
+	}).Create(pricelist).Error
 }
 
 // GetLocalPricelists returns all local pricelists