sync: recover missing server config during update push

internal/services/sync/service.go

@@ -685,17 +685,36 @@ func (s *Service) pushConfigurationUpdate(change *localdb.PendingChange) error {
 		}
 
 		if localCfg.ServerID == nil {
-			// Configuration hasn't been synced yet, try to find it on server by UUID
-			serverCfg, err := configRepo.GetByUUID(cfg.UUID)
-			if err != nil {
-				return fmt.Errorf("configuration not yet synced to server: %w", err)
+			// Configuration hasn't been synced yet, try to find it on server by UUID.
+			// If not found (e.g. stale create was skipped), create it from current snapshot.
+			serverCfg, getErr := configRepo.GetByUUID(cfg.UUID)
+			if getErr != nil {
+				if !errors.Is(getErr, gorm.ErrRecordNotFound) {
+					return fmt.Errorf("loading configuration from server: %w", getErr)
+				}
+				if createErr := configRepo.Create(&cfg); createErr != nil {
+					// Idempotency fallback: configuration may have been created concurrently.
+					existing, existingErr := configRepo.GetByUUID(cfg.UUID)
+					if existingErr != nil {
+						return fmt.Errorf("creating missing configuration on server: %w", createErr)
+					}
+					cfg.ID = existing.ID
+				}
+				if cfg.ID == 0 {
+					existing, existingErr := configRepo.GetByUUID(cfg.UUID)
+					if existingErr != nil {
+						return fmt.Errorf("loading created configuration from server: %w", existingErr)
+					}
+					cfg.ID = existing.ID
+				}
+			} else {
+				cfg.ID = serverCfg.ID
 			}
-			cfg.ID = serverCfg.ID
 
-			// Update local with server ID
-			serverID := serverCfg.ID
-			localCfg.ServerID = &serverID
-			s.localDB.SaveConfiguration(localCfg)
+				// Update local with server ID
+				serverID := cfg.ID
+				localCfg.ServerID = &serverID
+				s.localDB.SaveConfiguration(localCfg)
 		} else {
 			cfg.ID = *localCfg.ServerID
 		}

internal/services/sync/service_projects_push_test.go

@@ -202,6 +202,57 @@ func TestPushPendingChangesCreateIsIdempotent(t *testing.T) {
 	}
 }
 
+func TestPushPendingChangesCreateThenUpdateBeforeFirstPush(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	localSync := syncsvc.NewService(nil, local)
+	configService := services.NewLocalConfigurationService(local, localSync, &services.QuoteService{}, func() bool { return false })
+	pushService := syncsvc.NewServiceWithDB(serverDB, local)
+
+	created, err := configService.Create("tester", &services.CreateConfigRequest{
+		Name:        "Cfg v1",
+		Items:       models.ConfigItems{{LotName: "CPU_X", Quantity: 1, UnitPrice: 700}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+
+	if _, err := configService.UpdateNoAuth(created.UUID, &services.CreateConfigRequest{
+		Name:        "Cfg v2",
+		Items:       models.ConfigItems{{LotName: "CPU_X", Quantity: 3, UnitPrice: 700}},
+		ServerCount: 1,
+		ProjectUUID: created.ProjectUUID,
+	}); err != nil {
+		t.Fatalf("update config before first push: %v", err)
+	}
+
+	pushed, err := pushService.PushPendingChanges()
+	if err != nil {
+		t.Fatalf("push pending changes: %v", err)
+	}
+	if pushed < 1 {
+		t.Fatalf("expected at least one pushed change, got %d", pushed)
+	}
+
+	var serverCfg models.Configuration
+	if err := serverDB.Where("uuid = ?", created.UUID).First(&serverCfg).Error; err != nil {
+		t.Fatalf("configuration not pushed to server: %v", err)
+	}
+	if serverCfg.Name != "Cfg v2" {
+		t.Fatalf("expected latest update to be pushed, got %q", serverCfg.Name)
+	}
+
+	localCfg, err := local.GetConfigurationByUUID(created.UUID)
+	if err != nil {
+		t.Fatalf("get local config: %v", err)
+	}
+	if localCfg.ServerID == nil || *localCfg.ServerID == 0 {
+		t.Fatalf("expected local configuration to have server_id after push, got %+v", localCfg.ServerID)
+	}
+}
+
 func newLocalDBForSyncTest(t *testing.T) *localdb.LocalDB {
 	t.Helper()
 	localPath := filepath.Join(t.TempDir(), "local.db")