Merge branch 'stable'

# Conflicts:
#	bible/03-database.md

bible/02-architecture.md

@@ -144,7 +144,7 @@ This prevents selecting empty/incomplete snapshots and removes nondeterministic
 
 ### Principle
 
-Append-only: every save creates an immutable snapshot in `local_configuration_versions`.
+Append-only for **spec+price** changes: immutable snapshots are stored in `local_configuration_versions`.
 
 ```
 local_configurations
@@ -153,9 +153,11 @@ local_configurations
                               local_configuration_versions (v1)
 ```
 
-- `version_no = max + 1` on every save
+- `version_no = max + 1` when configuration **spec+price** changes
 - Old versions are never modified or deleted in normal flow
 - Rollback does **not** rewind history — it creates a **new** version from the snapshot
+- Operational updates (`line_no` reorder, server count, project move, rename)
+  are synced via `pending_changes` but do **not** create a new revision snapshot
 
 ### Rollback
 
@@ -181,6 +183,19 @@ local → pending → synced
 
 ---
 
+## Project Specification Ordering (`Line`)
+
+- Each project configuration has persistent `line_no` (`10,20,30...`) in both SQLite and MariaDB.
+- Project list ordering is deterministic:
+  `line_no ASC`, then `created_at DESC`, then `id DESC`.
+- Drag-and-drop reorder in project UI updates `line_no` for active project configurations.
+- Reorder writes are queued as configuration `update` events in `pending_changes`
+  without creating new configuration versions.
+- Backward compatibility: if remote MariaDB schema does not yet include `line_no`,
+  sync falls back to create/update without `line_no` instead of failing.
+
+---
+
 ## Sync Payload for Versioning
 
 Events in `pending_changes` for configurations contain:

bible/03-database.md

@@ -25,7 +25,7 @@ File: `qfs.db` in the user-state directory (see [05-config.md](05-config.md)).
 
 | Table | Purpose | Key Fields |
 |-------|---------|------------|
-| `local_configurations` | Saved configurations | `id`, `uuid` (unique), `items` (JSON), `pricelist_id`, `warehouse_pricelist_id`, `competitor_pricelist_id`, `current_version_id`, `sync_status` |
+| `local_configurations` | Saved configurations | `id`, `uuid` (unique), `items` (JSON), `line_no`, `pricelist_id`, `warehouse_pricelist_id`, `competitor_pricelist_id`, `current_version_id`, `sync_status` |
 | `local_configuration_versions` | Immutable snapshots (revisions) | `id`, `configuration_id` (FK), `version_no`, `data` (JSON), `change_note`, `created_at` |
 | `local_projects` | Projects | `id`, `uuid` (unique), `name`, `code`, `sync_status` |
 
@@ -51,6 +51,7 @@ INDEX local_pricelists(source, created_at)   -- used for "latest by source" quer
 INDEX local_configurations(pricelist_id)
 INDEX local_configurations(warehouse_pricelist_id)
 INDEX local_configurations(competitor_pricelist_id)
+INDEX local_configurations(project_uuid, line_no)  -- project ordering (Line column)
 UNIQUE INDEX local_configurations(uuid)
 ```
 
@@ -88,9 +89,9 @@ Database: `RFQ_LOG`
 | `qt_categories` | Component categories | SELECT |
 | `qt_pricelists` | Pricelists | SELECT |
 | `qt_pricelist_items` | Pricelist line items | SELECT |
+| `qt_configurations` | Saved configurations (includes `line_no`) | SELECT, INSERT, UPDATE |
 | `lot_partnumbers` | Partnumber → lot mapping (pricelist enrichment) | SELECT |
 | `stock_log` | Latest stock qty by partnumber (pricelist enrichment) | SELECT |
-| `qt_configurations` | Saved configurations | SELECT, INSERT, UPDATE |
 | `qt_projects` | Projects | SELECT, INSERT, UPDATE |
 | `qt_client_local_migrations` | Migration catalog | SELECT only |
 | `qt_client_schema_state` | Applied migrations state | SELECT, INSERT, UPDATE |

bible/04-api.md

@@ -57,6 +57,8 @@
 | GET | `/api/configs/:uuid/versions` | List versions |
 | GET | `/api/configs/:uuid/versions/:version` | Get specific version |
 
+`line` field in configuration payloads is backed by persistent `line_no` in DB.
+
 ### Projects
 
 | Method | Endpoint | Purpose |
@@ -67,6 +69,10 @@
 | PUT | `/api/projects/:uuid` | Update project |
 | DELETE | `/api/projects/:uuid` | Archive project variant (soft-delete via `is_active=false`; fails if project has no `variant` set — main projects cannot be deleted this way) |
 | GET | `/api/projects/:uuid/configs` | Project configurations |
+| PATCH | `/api/projects/:uuid/configs/reorder` | Reorder active project configurations (`ordered_uuids`) and persist `line_no` |
+
+`GET /api/projects/:uuid/configs` ordering:
+`line ASC`, then `created_at DESC`, then `id DESC`.
 
 ### Sync
 

cmd/qfs/main.go

@@ -336,8 +336,6 @@ func derefString(value *string) string {
 	return *value
 }
 
- 
-
 func setConfigDefaults(cfg *config.Config) {
 	if cfg.Server.Host == "" {
 		cfg.Server.Host = "127.0.0.1"
@@ -1662,6 +1660,43 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusOK, result)
 			})
 
+			projects.PATCH("/:uuid/configs/reorder", func(c *gin.Context) {
+				var req struct {
+					OrderedUUIDs []string `json:"ordered_uuids"`
+				}
+				if err := c.ShouldBindJSON(&req); err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+				if len(req.OrderedUUIDs) == 0 {
+					c.JSON(http.StatusBadRequest, gin.H{"error": "ordered_uuids is required"})
+					return
+				}
+
+				configs, err := configService.ReorderProjectConfigurationsNoAuth(c.Param("uuid"), req.OrderedUUIDs)
+				if err != nil {
+					switch {
+					case errors.Is(err, services.ErrProjectNotFound):
+						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+					default:
+						c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					}
+					return
+				}
+
+				total := 0.0
+				for i := range configs {
+					if configs[i].TotalPrice != nil {
+						total += *configs[i].TotalPrice
+					}
+				}
+				c.JSON(http.StatusOK, gin.H{
+					"project_uuid":   c.Param("uuid"),
+					"configurations": configs,
+					"total":          total,
+				})
+			})
+
 			projects.POST("/:uuid/configs", func(c *gin.Context) {
 				var req services.CreateConfigRequest
 				if err := c.ShouldBindJSON(&req); err != nil {

cmd/qfs/versioning_api_test.go

@@ -77,7 +77,7 @@ func TestConfigurationVersioningAPI(t *testing.T) {
 	if err := json.Unmarshal(rbRec.Body.Bytes(), &rbResp); err != nil {
 		t.Fatalf("unmarshal rollback response: %v", err)
 	}
-	if rbResp.Message == "" || rbResp.CurrentVersion.VersionNo != 3 {
+	if rbResp.Message == "" || rbResp.CurrentVersion.VersionNo != 2 {
 		t.Fatalf("unexpected rollback response: %+v", rbResp)
 	}
 

internal/localdb/converters.go

@@ -33,6 +33,7 @@ func ConfigurationToLocal(cfg *models.Configuration) *LocalConfiguration {
 		Article:          cfg.Article,
 		PricelistID:      cfg.PricelistID,
 		OnlyInStock:      cfg.OnlyInStock,
+		Line:             cfg.Line,
 		PriceUpdatedAt:   cfg.PriceUpdatedAt,
 		CreatedAt:        cfg.CreatedAt,
 		UpdatedAt:        time.Now(),
@@ -80,6 +81,7 @@ func LocalToConfiguration(local *LocalConfiguration) *models.Configuration {
 		Article:        local.Article,
 		PricelistID:    local.PricelistID,
 		OnlyInStock:    local.OnlyInStock,
+		Line:           local.Line,
 		PriceUpdatedAt: local.PriceUpdatedAt,
 		CreatedAt:      local.CreatedAt,
 	}

internal/localdb/local_migrations_test.go

@@ -253,3 +253,63 @@ func TestRunLocalMigrationsDeduplicatesConfigurationVersionsBySpecAndPrice(t *te
 		t.Fatalf("expected current_version_id to point to kept latest version v3")
 	}
 }
+
+func TestRunLocalMigrationsBackfillsConfigurationLineNo(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "line_no_backfill.db")
+
+	local, err := New(dbPath)
+	if err != nil {
+		t.Fatalf("open localdb: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	projectUUID := "project-line"
+	cfg1 := &LocalConfiguration{
+		UUID:             "line-cfg-1",
+		ProjectUUID:      &projectUUID,
+		Name:             "Cfg 1",
+		Items:            LocalConfigItems{},
+		SyncStatus:       "pending",
+		OriginalUsername: "tester",
+		IsActive:         true,
+		CreatedAt:        time.Now().Add(-2 * time.Hour),
+	}
+	cfg2 := &LocalConfiguration{
+		UUID:             "line-cfg-2",
+		ProjectUUID:      &projectUUID,
+		Name:             "Cfg 2",
+		Items:            LocalConfigItems{},
+		SyncStatus:       "pending",
+		OriginalUsername: "tester",
+		IsActive:         true,
+		CreatedAt:        time.Now().Add(-1 * time.Hour),
+	}
+	if err := local.SaveConfiguration(cfg1); err != nil {
+		t.Fatalf("save cfg1: %v", err)
+	}
+	if err := local.SaveConfiguration(cfg2); err != nil {
+		t.Fatalf("save cfg2: %v", err)
+	}
+
+	if err := local.DB().Model(&LocalConfiguration{}).Where("uuid IN ?", []string{cfg1.UUID, cfg2.UUID}).Update("line_no", 0).Error; err != nil {
+		t.Fatalf("reset line_no: %v", err)
+	}
+	if err := local.DB().Where("id = ?", "2026_02_19_local_config_line_no").Delete(&LocalSchemaMigration{}).Error; err != nil {
+		t.Fatalf("delete migration record: %v", err)
+	}
+
+	if err := runLocalMigrations(local.DB()); err != nil {
+		t.Fatalf("rerun local migrations: %v", err)
+	}
+
+	var rows []LocalConfiguration
+	if err := local.DB().Where("uuid IN ?", []string{cfg1.UUID, cfg2.UUID}).Order("created_at ASC").Find(&rows).Error; err != nil {
+		t.Fatalf("load configurations: %v", err)
+	}
+	if len(rows) != 2 {
+		t.Fatalf("expected 2 configurations, got %d", len(rows))
+	}
+	if rows[0].Line != 10 || rows[1].Line != 20 {
+		t.Fatalf("expected line_no [10,20], got [%d,%d]", rows[0].Line, rows[1].Line)
+	}
+}

internal/localdb/localdb.go

@@ -341,7 +341,7 @@ func (l *LocalDB) GetProjectByName(ownerUsername, name string) (*LocalProject, e
 func (l *LocalDB) GetProjectConfigurations(projectUUID string) ([]LocalConfiguration, error) {
 	var configs []LocalConfiguration
 	err := l.db.Where("project_uuid = ? AND is_active = ?", projectUUID, true).
-		Order("created_at DESC").
+		Order(configurationLineOrderClause()).
 		Find(&configs).Error
 	return configs, err
 }
@@ -514,9 +514,54 @@ func (l *LocalDB) BackfillConfigurationProjects(defaultOwner string) error {
 
 // SaveConfiguration saves a configuration to local SQLite
 func (l *LocalDB) SaveConfiguration(config *LocalConfiguration) error {
+	if config != nil && config.IsActive && config.Line <= 0 {
+		line, err := l.NextConfigurationLine(config.ProjectUUID, config.UUID)
+		if err != nil {
+			return err
+		}
+		config.Line = line
+	}
 	return l.db.Save(config).Error
 }
 
+func (l *LocalDB) NextConfigurationLine(projectUUID *string, excludeUUID string) (int, error) {
+	return NextConfigurationLineTx(l.db, projectUUID, excludeUUID)
+}
+
+func NextConfigurationLineTx(tx *gorm.DB, projectUUID *string, excludeUUID string) (int, error) {
+	query := tx.Model(&LocalConfiguration{}).
+		Where("is_active = ?", true)
+
+	trimmedExclude := strings.TrimSpace(excludeUUID)
+	if trimmedExclude != "" {
+		query = query.Where("uuid <> ?", trimmedExclude)
+	}
+
+	if projectUUID != nil && strings.TrimSpace(*projectUUID) != "" {
+		query = query.Where("project_uuid = ?", strings.TrimSpace(*projectUUID))
+	} else {
+		query = query.Where("project_uuid IS NULL OR TRIM(project_uuid) = ''")
+	}
+
+	var maxLine int
+	if err := query.Select("COALESCE(MAX(line_no), 0)").Scan(&maxLine).Error; err != nil {
+		return 0, fmt.Errorf("read max line_no: %w", err)
+	}
+	if maxLine < 0 {
+		maxLine = 0
+	}
+
+	next := ((maxLine / 10) + 1) * 10
+	if next < 10 {
+		next = 10
+	}
+	return next, nil
+}
+
+func configurationLineOrderClause() string {
+	return "CASE WHEN COALESCE(local_configurations.line_no, 0) <= 0 THEN 2147483647 ELSE local_configurations.line_no END ASC, local_configurations.created_at DESC, local_configurations.id DESC"
+}
+
 // GetConfigurations returns all local configurations
 func (l *LocalDB) GetConfigurations() ([]LocalConfiguration, error) {
 	var configs []LocalConfiguration

internal/localdb/migrations.go

@@ -108,6 +108,11 @@ var localMigrations = []localMigration{
 		name: "Deduplicate configuration revisions by spec+price",
 		run:  deduplicateConfigurationVersionsBySpecAndPrice,
 	},
+	{
+		id:   "2026_02_19_local_config_line_no",
+		name: "Add line_no to local_configurations and backfill ordering",
+		run:  addLocalConfigurationLineNo,
+	},
 }
 
 func runLocalMigrations(db *gorm.DB) error {
@@ -806,3 +811,56 @@ func addLocalConfigurationSupportCode(tx *gorm.DB) error {
 	}
 	return nil
 }
+
+func addLocalConfigurationLineNo(tx *gorm.DB) error {
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_configurations')
+		WHERE name IN ('line_no')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_configurations(line_no) existence: %w", err)
+	}
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_configurations
+			ADD COLUMN line_no INTEGER
+		`).Error; err != nil {
+			return fmt.Errorf("add local_configurations.line_no: %w", err)
+		}
+		slog.Info("added line_no to local_configurations")
+	}
+
+	if err := tx.Exec(`
+WITH ranked AS (
+	SELECT
+		id,
+		ROW_NUMBER() OVER (
+			PARTITION BY COALESCE(NULLIF(TRIM(project_uuid), ''), '__NO_PROJECT__')
+			ORDER BY created_at ASC, id ASC
+		) AS rn
+	FROM local_configurations
+	WHERE line_no IS NULL OR line_no <= 0
+)
+UPDATE local_configurations
+SET line_no = (
+	SELECT rn * 10
+	FROM ranked
+	WHERE ranked.id = local_configurations.id
+)
+WHERE id IN (SELECT id FROM ranked)
+`).Error; err != nil {
+		return fmt.Errorf("backfill local_configurations.line_no: %w", err)
+	}
+
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_configurations_project_line_no
+		ON local_configurations(project_uuid, line_no)
+	`).Error; err != nil {
+		return fmt.Errorf("ensure idx_local_configurations_project_line_no: %w", err)
+	}
+
+	return nil
+}

internal/localdb/models.go

@@ -83,35 +83,36 @@ func (s *LocalStringList) Scan(value interface{}) error {
 
 // LocalConfiguration stores configurations in local SQLite
 type LocalConfiguration struct {
-	ID               uint                        `gorm:"primaryKey;autoIncrement" json:"id"`
-	UUID             string                      `gorm:"uniqueIndex;not null" json:"uuid"`
-	ServerID         *uint                       `json:"server_id"` // ID on MariaDB server, NULL if local only
-	ProjectUUID      *string                     `gorm:"index" json:"project_uuid,omitempty"`
-	CurrentVersionID *string                     `gorm:"index" json:"current_version_id,omitempty"`
-	IsActive         bool                        `gorm:"default:true;index" json:"is_active"`
-	Name             string                      `gorm:"not null" json:"name"`
-	Items            LocalConfigItems            `gorm:"type:text" json:"items"` // JSON stored as text in SQLite
-	TotalPrice       *float64                    `json:"total_price"`
-	CustomPrice      *float64                    `json:"custom_price"`
-	Notes            string                      `json:"notes"`
-	IsTemplate       bool                        `gorm:"default:false" json:"is_template"`
-	ServerCount      int                         `gorm:"default:1" json:"server_count"`
-	ServerModel      string                      `gorm:"size:100" json:"server_model,omitempty"`
-	SupportCode      string                      `gorm:"size:20" json:"support_code,omitempty"`
-	Article          string                      `gorm:"size:80" json:"article,omitempty"`
+	ID                    uint                        `gorm:"primaryKey;autoIncrement" json:"id"`
+	UUID                  string                      `gorm:"uniqueIndex;not null" json:"uuid"`
+	ServerID              *uint                       `json:"server_id"` // ID on MariaDB server, NULL if local only
+	ProjectUUID           *string                     `gorm:"index" json:"project_uuid,omitempty"`
+	CurrentVersionID      *string                     `gorm:"index" json:"current_version_id,omitempty"`
+	IsActive              bool                        `gorm:"default:true;index" json:"is_active"`
+	Name                  string                      `gorm:"not null" json:"name"`
+	Items                 LocalConfigItems            `gorm:"type:text" json:"items"` // JSON stored as text in SQLite
+	TotalPrice            *float64                    `json:"total_price"`
+	CustomPrice           *float64                    `json:"custom_price"`
+	Notes                 string                      `json:"notes"`
+	IsTemplate            bool                        `gorm:"default:false" json:"is_template"`
+	ServerCount           int                         `gorm:"default:1" json:"server_count"`
+	ServerModel           string                      `gorm:"size:100" json:"server_model,omitempty"`
+	SupportCode           string                      `gorm:"size:20" json:"support_code,omitempty"`
+	Article               string                      `gorm:"size:80" json:"article,omitempty"`
 	PricelistID           *uint                       `gorm:"index" json:"pricelist_id,omitempty"`
 	WarehousePricelistID  *uint                       `gorm:"index" json:"warehouse_pricelist_id,omitempty"`
 	CompetitorPricelistID *uint                       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
 	OnlyInStock           bool                        `gorm:"default:false" json:"only_in_stock"`
-	PriceUpdatedAt   *time.Time                  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
-	CreatedAt        time.Time                   `json:"created_at"`
-	UpdatedAt        time.Time                   `json:"updated_at"`
-	SyncedAt         *time.Time                  `json:"synced_at"`
-	SyncStatus       string                      `gorm:"default:'local'" json:"sync_status"` // 'local', 'synced', 'modified'
-	OriginalUserID   uint                        `json:"original_user_id"`                   // UserID from MariaDB for reference
-	OriginalUsername string                      `gorm:"not null;default:'';index" json:"original_username"`
-	CurrentVersion   *LocalConfigurationVersion  `gorm:"foreignKey:CurrentVersionID;references:ID" json:"current_version,omitempty"`
-	Versions         []LocalConfigurationVersion `gorm:"foreignKey:ConfigurationUUID;references:UUID" json:"versions,omitempty"`
+	Line                  int                         `gorm:"column:line_no;index" json:"line"`
+	PriceUpdatedAt        *time.Time                  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
+	CreatedAt             time.Time                   `json:"created_at"`
+	UpdatedAt             time.Time                   `json:"updated_at"`
+	SyncedAt              *time.Time                  `json:"synced_at"`
+	SyncStatus            string                      `gorm:"default:'local'" json:"sync_status"` // 'local', 'synced', 'modified'
+	OriginalUserID        uint                        `json:"original_user_id"`                   // UserID from MariaDB for reference
+	OriginalUsername      string                      `gorm:"not null;default:'';index" json:"original_username"`
+	CurrentVersion        *LocalConfigurationVersion  `gorm:"foreignKey:CurrentVersionID;references:ID" json:"current_version,omitempty"`
+	Versions              []LocalConfigurationVersion `gorm:"foreignKey:ConfigurationUUID;references:UUID" json:"versions,omitempty"`
 }
 
 func (LocalConfiguration) TableName() string {

internal/localdb/snapshots.go

@@ -28,6 +28,7 @@ func BuildConfigurationSnapshot(localCfg *LocalConfiguration) (string, error) {
 		"article":            localCfg.Article,
 		"pricelist_id":       localCfg.PricelistID,
 		"only_in_stock":      localCfg.OnlyInStock,
+		"line":               localCfg.Line,
 		"price_updated_at":   localCfg.PriceUpdatedAt,
 		"created_at":         localCfg.CreatedAt,
 		"updated_at":         localCfg.UpdatedAt,
@@ -61,6 +62,7 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Article          string           `json:"article"`
 		PricelistID      *uint            `json:"pricelist_id"`
 		OnlyInStock      bool             `json:"only_in_stock"`
+		Line             int              `json:"line"`
 		PriceUpdatedAt   *time.Time       `json:"price_updated_at"`
 		OriginalUserID   uint             `json:"original_user_id"`
 		OriginalUsername string           `json:"original_username"`
@@ -90,6 +92,7 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Article:          snapshot.Article,
 		PricelistID:      snapshot.PricelistID,
 		OnlyInStock:      snapshot.OnlyInStock,
+		Line:             snapshot.Line,
 		PriceUpdatedAt:   snapshot.PriceUpdatedAt,
 		OriginalUserID:   snapshot.OriginalUserID,
 		OriginalUsername: snapshot.OriginalUsername,

internal/models/configuration.go

@@ -61,6 +61,7 @@ type Configuration struct {
 	CompetitorPricelistID *uint       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
 	DisablePriceRefresh   bool        `gorm:"default:false" json:"disable_price_refresh"`
 	OnlyInStock           bool        `gorm:"default:false" json:"only_in_stock"`
+	Line                  int         `gorm:"column:line_no;index" json:"line"`
 	PriceUpdatedAt        *time.Time  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
 	CreatedAt             time.Time   `gorm:"autoCreateTime" json:"created_at"`
 	CurrentVersionNo      int         `gorm:"-" json:"current_version_no,omitempty"`

internal/repository/configuration.go

@@ -1,6 +1,8 @@
 package repository
 
 import (
+	"strings"
+
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"gorm.io/gorm"
 )
@@ -14,7 +16,13 @@ func NewConfigurationRepository(db *gorm.DB) *ConfigurationRepository {
 }
 
 func (r *ConfigurationRepository) Create(config *models.Configuration) error {
-	return r.db.Create(config).Error
+	if err := r.db.Create(config).Error; err != nil {
+		if isUnknownLineNoColumnError(err) {
+			return r.db.Omit("line_no").Create(config).Error
+		}
+		return err
+	}
+	return nil
 }
 
 func (r *ConfigurationRepository) GetByID(id uint) (*models.Configuration, error) {
@@ -36,7 +44,21 @@ func (r *ConfigurationRepository) GetByUUID(uuid string) (*models.Configuration,
 }
 
 func (r *ConfigurationRepository) Update(config *models.Configuration) error {
-	return r.db.Save(config).Error
+	if err := r.db.Save(config).Error; err != nil {
+		if isUnknownLineNoColumnError(err) {
+			return r.db.Omit("line_no").Save(config).Error
+		}
+		return err
+	}
+	return nil
+}
+
+func isUnknownLineNoColumnError(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := strings.ToLower(err.Error())
+	return strings.Contains(msg, "unknown column 'line_no'") || strings.Contains(msg, "no column named line_no")
 }
 
 func (r *ConfigurationRepository) Delete(id uint) error {

internal/services/export.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"math"
+	"sort"
 	"strings"
 	"time"
 
@@ -42,6 +43,7 @@ type ExportItem struct {
 // ConfigExportBlock represents one configuration (server) in the export.
 type ConfigExportBlock struct {
 	Article     string
+	Line        int
 	ServerCount int
 	UnitPrice   float64 // sum of component prices for one server
 	Items       []ExportItem
@@ -92,7 +94,10 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 	}
 
 	for i, block := range data.Configs {
-		lineNo := (i + 1) * 10
+		lineNo := block.Line
+		if lineNo <= 0 {
+			lineNo = (i + 1) * 10
+		}
 
 		serverCount := block.ServerCount
 		if serverCount < 1 {
@@ -104,13 +109,13 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 		// Server summary row
 		serverRow := []string{
 			fmt.Sprintf("%d", lineNo),        // Line
-			"",                                // Type
-			block.Article,                     // p/n
-			"",                                // Description
-			"",                                // Qty (1 pcs.)
-			fmt.Sprintf("%d", serverCount),    // Qty (total)
-			formatPriceInt(block.UnitPrice),   // Price (1 pcs.)
-			formatPriceWithSpace(totalPrice),  // Price (total)
+			"",                               // Type
+			block.Article,                    // p/n
+			"",                               // Description
+			"",                               // Qty (1 pcs.)
+			fmt.Sprintf("%d", serverCount),   // Qty (total)
+			formatPriceInt(block.UnitPrice),  // Price (1 pcs.)
+			formatPriceWithSpace(totalPrice), // Price (total)
 		}
 		if err := csvWriter.Write(serverRow); err != nil {
 			return fmt.Errorf("failed to write server row: %w", err)
@@ -124,14 +129,14 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 		// Component rows
 		for _, item := range sortedItems {
 			componentRow := []string{
-				"",                                // Line
-				item.Category,                     // Type
-				item.LotName,                      // p/n
-				"",                                // Description
-				fmt.Sprintf("%d", item.Quantity),  // Qty (1 pcs.)
-				"",                                // Qty (total)
-				formatPriceComma(item.UnitPrice),  // Price (1 pcs.)
-				"",                                // Price (total)
+				"",                               // Line
+				item.Category,                    // Type
+				item.LotName,                     // p/n
+				"",                               // Description
+				fmt.Sprintf("%d", item.Quantity), // Qty (1 pcs.)
+				"",                               // Qty (total)
+				formatPriceComma(item.UnitPrice), // Price (1 pcs.)
+				"",                               // Price (total)
 			}
 			if err := csvWriter.Write(componentRow); err != nil {
 				return fmt.Errorf("failed to write component row: %w", err)
@@ -174,9 +179,30 @@ func (s *ExportService) ConfigToExportData(cfg *models.Configuration) *ProjectEx
 
 // ProjectToExportData converts multiple configurations into ProjectExportData.
 func (s *ExportService) ProjectToExportData(configs []models.Configuration) *ProjectExportData {
+	sortedConfigs := make([]models.Configuration, len(configs))
+	copy(sortedConfigs, configs)
+	sort.Slice(sortedConfigs, func(i, j int) bool {
+		leftLine := sortedConfigs[i].Line
+		rightLine := sortedConfigs[j].Line
+
+		if leftLine <= 0 {
+			leftLine = int(^uint(0) >> 1)
+		}
+		if rightLine <= 0 {
+			rightLine = int(^uint(0) >> 1)
+		}
+		if leftLine != rightLine {
+			return leftLine < rightLine
+		}
+		if !sortedConfigs[i].CreatedAt.Equal(sortedConfigs[j].CreatedAt) {
+			return sortedConfigs[i].CreatedAt.After(sortedConfigs[j].CreatedAt)
+		}
+		return sortedConfigs[i].UUID > sortedConfigs[j].UUID
+	})
+
 	blocks := make([]ConfigExportBlock, 0, len(configs))
-	for i := range configs {
-		blocks = append(blocks, s.buildExportBlock(&configs[i]))
+	for i := range sortedConfigs {
+		blocks = append(blocks, s.buildExportBlock(&sortedConfigs[i]))
 	}
 	return &ProjectExportData{
 		Configs:   blocks,
@@ -214,6 +240,7 @@ func (s *ExportService) buildExportBlock(cfg *models.Configuration) ConfigExport
 
 	return ConfigExportBlock{
 		Article:     cfg.Article,
+		Line:        cfg.Line,
 		ServerCount: serverCount,
 		UnitPrice:   unitTotal,
 		Items:       items,

internal/services/export_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/config"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
 )
 
 func newTestProjectData(items []ExportItem, article string, serverCount int) *ProjectExportData {
@@ -357,6 +358,51 @@ func TestToCSV_MultipleBlocks(t *testing.T) {
 	}
 }
 
+func TestProjectToExportData_SortsByLine(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	configs := []models.Configuration{
+		{
+			UUID:        "cfg-1",
+			Line:        30,
+			Article:     "ART-30",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-30", Quantity: 1, UnitPrice: 300}},
+			CreatedAt:   time.Now().Add(-1 * time.Hour),
+		},
+		{
+			UUID:        "cfg-2",
+			Line:        10,
+			Article:     "ART-10",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-10", Quantity: 1, UnitPrice: 100}},
+			CreatedAt:   time.Now().Add(-2 * time.Hour),
+		},
+		{
+			UUID:        "cfg-3",
+			Line:        20,
+			Article:     "ART-20",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-20", Quantity: 1, UnitPrice: 200}},
+			CreatedAt:   time.Now().Add(-3 * time.Hour),
+		},
+	}
+
+	data := svc.ProjectToExportData(configs)
+	if len(data.Configs) != 3 {
+		t.Fatalf("expected 3 blocks, got %d", len(data.Configs))
+	}
+	if data.Configs[0].Article != "ART-10" || data.Configs[0].Line != 10 {
+		t.Fatalf("first block must be line 10, got article=%s line=%d", data.Configs[0].Article, data.Configs[0].Line)
+	}
+	if data.Configs[1].Article != "ART-20" || data.Configs[1].Line != 20 {
+		t.Fatalf("second block must be line 20, got article=%s line=%d", data.Configs[1].Article, data.Configs[1].Line)
+	}
+	if data.Configs[2].Article != "ART-30" || data.Configs[2].Line != 30 {
+		t.Fatalf("third block must be line 30, got article=%s line=%d", data.Configs[2].Article, data.Configs[2].Line)
+	}
+}
+
 func TestFormatPriceWithSpace(t *testing.T) {
 	tests := []struct {
 		input    float64

internal/services/local_configuration.go

@@ -107,6 +107,7 @@ func (s *LocalConfigurationService) Create(ownerUsername string, req *CreateConf
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("create configuration with version: %w", err)
 	}
+	cfg.Line = localCfg.Line
 
 	// Record usage stats
 	_ = s.quoteService.RecordUsage(req.Items)
@@ -325,6 +326,7 @@ func (s *LocalConfigurationService) CloneToProject(configUUID string, ownerUsern
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("clone configuration with version: %w", err)
 	}
+	clone.Line = localCfg.Line
 
 	return clone, nil
 }
@@ -640,6 +642,7 @@ func (s *LocalConfigurationService) CloneNoAuthToProjectFromVersion(configUUID s
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("clone configuration without auth with version: %w", err)
 	}
+	clone.Line = localCfg.Line
 
 	return clone, nil
 }
@@ -826,21 +829,13 @@ func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverC
 			return fmt.Errorf("save local configuration: %w", err)
 		}
 
-		// Use existing current version for the pending change
-		var version localdb.LocalConfigurationVersion
-		if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
-			if err := tx.Where("id = ?", *localCfg.CurrentVersionID).First(&version).Error; err != nil {
-				return fmt.Errorf("load current version: %w", err)
-			}
-		} else {
-			if err := tx.Where("configuration_uuid = ?", localCfg.UUID).
-				Order("version_no DESC").First(&version).Error; err != nil {
-				return fmt.Errorf("load latest version: %w", err)
-			}
+		version, err := s.loadVersionForPendingTx(tx, localCfg)
+		if err != nil {
+			return err
 		}
 
 		cfg = localdb.LocalToConfiguration(localCfg)
-		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "update", &version, ""); err != nil {
+		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "update", version, ""); err != nil {
 			return fmt.Errorf("enqueue server-count pending change: %w", err)
 		}
 		return nil
@@ -852,6 +847,99 @@ func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverC
 	return cfg, nil
 }
 
+func (s *LocalConfigurationService) ReorderProjectConfigurationsNoAuth(projectUUID string, orderedUUIDs []string) ([]models.Configuration, error) {
+	projectUUID = strings.TrimSpace(projectUUID)
+	if projectUUID == "" {
+		return nil, ErrProjectNotFound
+	}
+	if _, err := s.localDB.GetProjectByUUID(projectUUID); err != nil {
+		return nil, ErrProjectNotFound
+	}
+	if len(orderedUUIDs) == 0 {
+		return []models.Configuration{}, nil
+	}
+
+	seen := make(map[string]struct{}, len(orderedUUIDs))
+	normalized := make([]string, 0, len(orderedUUIDs))
+	for _, raw := range orderedUUIDs {
+		u := strings.TrimSpace(raw)
+		if u == "" {
+			return nil, fmt.Errorf("ordered_uuids contains empty uuid")
+		}
+		if _, exists := seen[u]; exists {
+			return nil, fmt.Errorf("ordered_uuids contains duplicate uuid: %s", u)
+		}
+		seen[u] = struct{}{}
+		normalized = append(normalized, u)
+	}
+
+	err := s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		var active []localdb.LocalConfiguration
+		if err := tx.Where("project_uuid = ? AND is_active = ?", projectUUID, true).
+			Find(&active).Error; err != nil {
+			return fmt.Errorf("load project active configurations: %w", err)
+		}
+		if len(active) != len(normalized) {
+			return fmt.Errorf("ordered_uuids count mismatch: expected %d got %d", len(active), len(normalized))
+		}
+
+		byUUID := make(map[string]*localdb.LocalConfiguration, len(active))
+		for i := range active {
+			cfg := active[i]
+			byUUID[cfg.UUID] = &cfg
+		}
+		for _, id := range normalized {
+			if _, ok := byUUID[id]; !ok {
+				return fmt.Errorf("configuration %s not found in project %s", id, projectUUID)
+			}
+		}
+
+		now := time.Now()
+		for idx, id := range normalized {
+			cfg := byUUID[id]
+			newLine := (idx + 1) * 10
+			if cfg.Line == newLine {
+				continue
+			}
+
+			cfg.Line = newLine
+			cfg.UpdatedAt = now
+			cfg.SyncStatus = "pending"
+
+			if err := tx.Save(cfg).Error; err != nil {
+				return fmt.Errorf("save reordered configuration %s: %w", cfg.UUID, err)
+			}
+
+			version, err := s.loadVersionForPendingTx(tx, cfg)
+			if err != nil {
+				return err
+			}
+			if err := s.enqueueConfigurationPendingChangeTx(tx, cfg, "update", version, ""); err != nil {
+				return fmt.Errorf("enqueue reorder pending change for %s: %w", cfg.UUID, err)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var localConfigs []localdb.LocalConfiguration
+	if err := s.localDB.DB().
+		Preload("CurrentVersion").
+		Where("project_uuid = ? AND is_active = ?", projectUUID, true).
+		Order("CASE WHEN COALESCE(line_no, 0) <= 0 THEN 2147483647 ELSE line_no END ASC, created_at DESC, id DESC").
+		Find(&localConfigs).Error; err != nil {
+		return nil, fmt.Errorf("load reordered configurations: %w", err)
+	}
+
+	result := make([]models.Configuration, 0, len(localConfigs))
+	for i := range localConfigs {
+		result = append(result, *localdb.LocalToConfiguration(&localConfigs[i]))
+	}
+	return result, nil
+}
+
 // ImportFromServer imports configurations from MariaDB to local SQLite cache.
 func (s *LocalConfigurationService) ImportFromServer() (*sync.ConfigImportResult, error) {
 	return s.syncService.ImportConfigurationsToLocal()
@@ -965,6 +1053,11 @@ func (s *LocalConfigurationService) isOwner(cfg *localdb.LocalConfiguration, own
 
 func (s *LocalConfigurationService) createWithVersion(localCfg *localdb.LocalConfiguration, createdBy string) error {
 	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		if localCfg.IsActive && localCfg.Line <= 0 {
+			if err := s.ensureConfigurationLineTx(tx, localCfg); err != nil {
+				return err
+			}
+		}
 		if err := tx.Create(localCfg).Error; err != nil {
 			return fmt.Errorf("create local configuration: %w", err)
 		}
@@ -1021,12 +1114,31 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 					return fmt.Errorf("compare revision content: %w", err)
 				}
 				if sameRevisionContent {
-					cfg = localdb.LocalToConfiguration(&locked)
+					if !hasNonRevisionConfigurationChanges(&locked, localCfg) {
+						cfg = localdb.LocalToConfiguration(&locked)
+						return nil
+					}
+					if err := tx.Save(localCfg).Error; err != nil {
+						return fmt.Errorf("save local configuration (no new revision): %w", err)
+					}
+					cfg = localdb.LocalToConfiguration(localCfg)
+					if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, operation, currentVersion, createdBy); err != nil {
+						return fmt.Errorf("enqueue %s pending change without revision: %w", operation, err)
+					}
+					if err := s.recalculateLocalPricelistUsageTx(tx); err != nil {
+						return fmt.Errorf("recalculate local pricelist usage: %w", err)
+					}
 					return nil
 				}
 			}
 		}
 
+		if localCfg.IsActive && localCfg.Line <= 0 {
+			if err := s.ensureConfigurationLineTx(tx, localCfg); err != nil {
+				return err
+			}
+		}
+
 		if err := tx.Save(localCfg).Error; err != nil {
 			return fmt.Errorf("save local configuration: %w", err)
 		}
@@ -1061,6 +1173,50 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 	return cfg, nil
 }
 
+func hasNonRevisionConfigurationChanges(current *localdb.LocalConfiguration, next *localdb.LocalConfiguration) bool {
+	if current == nil || next == nil {
+		return true
+	}
+	if current.Name != next.Name ||
+		current.Notes != next.Notes ||
+		current.IsTemplate != next.IsTemplate ||
+		current.ServerModel != next.ServerModel ||
+		current.SupportCode != next.SupportCode ||
+		current.Article != next.Article ||
+		current.OnlyInStock != next.OnlyInStock ||
+		current.IsActive != next.IsActive ||
+		current.Line != next.Line {
+		return true
+	}
+	if !equalUintPtr(current.PricelistID, next.PricelistID) ||
+		!equalUintPtr(current.WarehousePricelistID, next.WarehousePricelistID) ||
+		!equalUintPtr(current.CompetitorPricelistID, next.CompetitorPricelistID) ||
+		!equalStringPtr(current.ProjectUUID, next.ProjectUUID) {
+		return true
+	}
+	return false
+}
+
+func equalStringPtr(a, b *string) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return strings.TrimSpace(*a) == strings.TrimSpace(*b)
+}
+
+func equalUintPtr(a, b *uint) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return *a == *b
+}
+
 func (s *LocalConfigurationService) loadCurrentVersionTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) (*localdb.LocalConfigurationVersion, error) {
 	var version localdb.LocalConfigurationVersion
 	if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
@@ -1082,6 +1238,32 @@ func (s *LocalConfigurationService) loadCurrentVersionTx(tx *gorm.DB, localCfg *
 	return &version, nil
 }
 
+func (s *LocalConfigurationService) loadVersionForPendingTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) (*localdb.LocalConfigurationVersion, error) {
+	if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
+		var current localdb.LocalConfigurationVersion
+		if err := tx.Where("id = ?", *localCfg.CurrentVersionID).First(&current).Error; err == nil {
+			return &current, nil
+		}
+	}
+
+	var latest localdb.LocalConfigurationVersion
+	if err := tx.Where("configuration_uuid = ?", localCfg.UUID).
+		Order("version_no DESC").
+		First(&latest).Error; err != nil {
+		return nil, fmt.Errorf("load version for pending change: %w", err)
+	}
+	return &latest, nil
+}
+
+func (s *LocalConfigurationService) ensureConfigurationLineTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) error {
+	line, err := localdb.NextConfigurationLineTx(tx, localCfg.ProjectUUID, localCfg.UUID)
+	if err != nil {
+		return fmt.Errorf("assign line_no for configuration %s: %w", localCfg.UUID, err)
+	}
+	localCfg.Line = line
+	return nil
+}
+
 func (s *LocalConfigurationService) hasSameRevisionContent(localCfg *localdb.LocalConfiguration, currentVersion *localdb.LocalConfigurationVersion) (bool, error) {
 	currentSnapshotCfg, err := s.decodeConfigurationSnapshot(currentVersion.Data)
 	if err != nil {
@@ -1195,6 +1377,9 @@ func (s *LocalConfigurationService) rollbackToVersion(configurationUUID string,
 		current.ServerCount = rollbackData.ServerCount
 		current.PricelistID = rollbackData.PricelistID
 		current.OnlyInStock = rollbackData.OnlyInStock
+		if rollbackData.Line > 0 {
+			current.Line = rollbackData.Line
+		}
 		current.PriceUpdatedAt = rollbackData.PriceUpdatedAt
 		current.UpdatedAt = time.Now()
 		current.SyncStatus = "pending"

internal/services/local_configuration_versioning_test.go

@@ -137,6 +137,78 @@ func TestUpdateNoAuthSkipsRevisionWhenSpecAndPriceUnchanged(t *testing.T) {
 	}
 }
 
+func TestReorderProjectConfigurationsDoesNotCreateNewVersions(t *testing.T) {
+	service, local := newLocalConfigServiceForTest(t)
+
+	project := &localdb.LocalProject{
+		UUID:          "project-reorder",
+		OwnerUsername: "tester",
+		Code:          "PRJ-ORDER",
+		Variant:       "",
+		Name:          ptrString("Project Reorder"),
+		IsActive:      true,
+		CreatedAt:     time.Now(),
+		UpdatedAt:     time.Now(),
+		SyncStatus:    "pending",
+	}
+	if err := local.SaveProject(project); err != nil {
+		t.Fatalf("save project: %v", err)
+	}
+
+	first, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "Cfg A",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 100}},
+		ServerCount: 1,
+		ProjectUUID: &project.UUID,
+	})
+	if err != nil {
+		t.Fatalf("create first config: %v", err)
+	}
+	second, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "Cfg B",
+		Items:       models.ConfigItems{{LotName: "CPU_B", Quantity: 1, UnitPrice: 200}},
+		ServerCount: 1,
+		ProjectUUID: &project.UUID,
+	})
+	if err != nil {
+		t.Fatalf("create second config: %v", err)
+	}
+
+	beforeFirst := loadVersions(t, local, first.UUID)
+	beforeSecond := loadVersions(t, local, second.UUID)
+
+	reordered, err := service.ReorderProjectConfigurationsNoAuth(project.UUID, []string{second.UUID, first.UUID})
+	if err != nil {
+		t.Fatalf("reorder configurations: %v", err)
+	}
+	if len(reordered) != 2 {
+		t.Fatalf("expected 2 reordered configs, got %d", len(reordered))
+	}
+	if reordered[0].UUID != second.UUID || reordered[0].Line != 10 {
+		t.Fatalf("expected second config first with line 10, got uuid=%s line=%d", reordered[0].UUID, reordered[0].Line)
+	}
+	if reordered[1].UUID != first.UUID || reordered[1].Line != 20 {
+		t.Fatalf("expected first config second with line 20, got uuid=%s line=%d", reordered[1].UUID, reordered[1].Line)
+	}
+
+	afterFirst := loadVersions(t, local, first.UUID)
+	afterSecond := loadVersions(t, local, second.UUID)
+	if len(afterFirst) != len(beforeFirst) || len(afterSecond) != len(beforeSecond) {
+		t.Fatalf("reorder must not create new versions")
+	}
+
+	var pendingCount int64
+	if err := local.DB().
+		Table("pending_changes").
+		Where("entity_type = ? AND operation = ? AND entity_uuid IN ?", "configuration", "update", []string{first.UUID, second.UUID}).
+		Count(&pendingCount).Error; err != nil {
+		t.Fatalf("count reorder pending changes: %v", err)
+	}
+	if pendingCount < 2 {
+		t.Fatalf("expected at least 2 pending update changes for reorder, got %d", pendingCount)
+	}
+}
+
 func TestAppendOnlyInvariantOldRowsUnchanged(t *testing.T) {
 	service, local := newLocalConfigServiceForTest(t)
 

internal/services/project.go

@@ -16,10 +16,10 @@ import (
 )
 
 var (
-	ErrProjectNotFound          = errors.New("project not found")
-	ErrProjectForbidden         = errors.New("access to project forbidden")
-	ErrProjectCodeExists        = errors.New("project code and variant already exist")
-	ErrCannotDeleteMainVariant  = errors.New("cannot delete main variant")
+	ErrProjectNotFound         = errors.New("project not found")
+	ErrProjectForbidden        = errors.New("access to project forbidden")
+	ErrProjectCodeExists       = errors.New("project code and variant already exist")
+	ErrCannotDeleteMainVariant = errors.New("cannot delete main variant")
 )
 
 type ProjectService struct {
@@ -31,10 +31,10 @@ func NewProjectService(localDB *localdb.LocalDB) *ProjectService {
 }
 
 type CreateProjectRequest struct {
-	Code       string `json:"code"`
-	Variant    string `json:"variant,omitempty"`
+	Code       string  `json:"code"`
+	Variant    string  `json:"variant,omitempty"`
 	Name       *string `json:"name,omitempty"`
-	TrackerURL string `json:"tracker_url"`
+	TrackerURL string  `json:"tracker_url"`
 }
 
 type UpdateProjectRequest struct {
@@ -275,8 +275,23 @@ func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status s
 		}, nil
 	}
 
+	query := s.localDB.DB().
+		Preload("CurrentVersion").
+		Where("project_uuid = ?", projectUUID).
+		Order("CASE WHEN COALESCE(line_no, 0) <= 0 THEN 2147483647 ELSE line_no END ASC, created_at DESC, id DESC")
+
+	switch status {
+	case "active", "":
+		query = query.Where("is_active = ?", true)
+	case "archived":
+		query = query.Where("is_active = ?", false)
+	case "all":
+	default:
+		query = query.Where("is_active = ?", true)
+	}
+
 	var localConfigs []localdb.LocalConfiguration
-	if err := s.localDB.DB().Preload("CurrentVersion").Order("created_at DESC").Find(&localConfigs).Error; err != nil {
+	if err := query.Find(&localConfigs).Error; err != nil {
 		return nil, err
 	}
 
@@ -284,25 +299,6 @@ func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status s
 	total := 0.0
 	for i := range localConfigs {
 		localCfg := localConfigs[i]
-		if localCfg.ProjectUUID == nil || *localCfg.ProjectUUID != projectUUID {
-			continue
-		}
-		switch status {
-		case "active", "":
-			if !localCfg.IsActive {
-				continue
-			}
-		case "archived":
-			if localCfg.IsActive {
-				continue
-			}
-		case "all":
-		default:
-			if !localCfg.IsActive {
-				continue
-			}
-		}
-
 		cfg := localdb.LocalToConfiguration(&localCfg)
 		if cfg.TotalPrice != nil {
 			total += *cfg.TotalPrice

internal/services/sync/service.go

@@ -145,6 +145,9 @@ func (s *Service) ImportConfigurationsToLocal() (*ConfigImportResult, error) {
 
 			if existing != nil && err == nil {
 				localCfg.ID = existing.ID
+				if localCfg.Line <= 0 && existing.Line > 0 {
+					localCfg.Line = existing.Line
+				}
 				result.Updated++
 			} else {
 				result.Imported++

internal/services/sync/service_projects_push_test.go

@@ -250,6 +250,71 @@ func TestPushPendingChangesCreateIsIdempotent(t *testing.T) {
 	}
 }
 
+func TestPushPendingChangesConfigurationPushesLine(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 Line Push",
+		Items:       models.ConfigItems{{LotName: "CPU_LINE", Quantity: 1, UnitPrice: 1000}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+	if created.Line != 10 {
+		t.Fatalf("expected local create line=10, got %d", created.Line)
+	}
+
+	if _, err := pushService.PushPendingChanges(); err != nil {
+		t.Fatalf("push pending changes: %v", err)
+	}
+
+	var serverCfg models.Configuration
+	if err := serverDB.Where("uuid = ?", created.UUID).First(&serverCfg).Error; err != nil {
+		t.Fatalf("load server config: %v", err)
+	}
+	if serverCfg.Line != 10 {
+		t.Fatalf("expected server line=10 after push, got %d", serverCfg.Line)
+	}
+}
+
+func TestImportConfigurationsToLocalPullsLine(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	cfg := models.Configuration{
+		UUID:          "server-line-config",
+		OwnerUsername: "tester",
+		Name:          "Cfg Line Pull",
+		Items:         models.ConfigItems{{LotName: "CPU_PULL", Quantity: 1, UnitPrice: 900}},
+		ServerCount:   1,
+		Line:          40,
+	}
+	total := cfg.Items.Total()
+	cfg.TotalPrice = &total
+	if err := serverDB.Create(&cfg).Error; err != nil {
+		t.Fatalf("seed server config: %v", err)
+	}
+
+	svc := syncsvc.NewServiceWithDB(serverDB, local)
+	if _, err := svc.ImportConfigurationsToLocal(); err != nil {
+		t.Fatalf("import configurations to local: %v", err)
+	}
+
+	localCfg, err := local.GetConfigurationByUUID(cfg.UUID)
+	if err != nil {
+		t.Fatalf("load local config: %v", err)
+	}
+	if localCfg.Line != 40 {
+		t.Fatalf("expected imported line=40, got %d", localCfg.Line)
+	}
+}
+
 func TestPushPendingChangesCreateThenUpdateBeforeFirstPush(t *testing.T) {
 	local := newLocalDBForSyncTest(t)
 	serverDB := newServerDBForSyncTest(t)
@@ -361,6 +426,7 @@ CREATE TABLE qt_configurations (
 	competitor_pricelist_id INTEGER NULL,
 	disable_price_refresh INTEGER NOT NULL DEFAULT 0,
 	only_in_stock INTEGER NOT NULL DEFAULT 0,
+	line_no INTEGER NULL,
 	price_updated_at DATETIME NULL,
 	created_at DATETIME
 );`).Error; err != nil {

migrations/028_add_line_no_to_configurations.sql

@@ -0,0 +1,18 @@
+ALTER TABLE qt_configurations
+    ADD COLUMN IF NOT EXISTS line_no INT NULL AFTER only_in_stock;
+
+UPDATE qt_configurations q
+JOIN (
+    SELECT
+        id,
+        ROW_NUMBER() OVER (
+            PARTITION BY COALESCE(NULLIF(TRIM(project_uuid), ''), '__NO_PROJECT__')
+            ORDER BY created_at ASC, id ASC
+        ) AS rn
+    FROM qt_configurations
+    WHERE line_no IS NULL OR line_no <= 0
+) ranked ON ranked.id = q.id
+SET q.line_no = ranked.rn * 10;
+
+ALTER TABLE qt_configurations
+    ADD INDEX IF NOT EXISTS idx_qt_configurations_project_line_no (project_uuid, line_no);

web/templates/project_detail.html

@@ -211,6 +211,8 @@ const projectUUID = '{{.ProjectUUID}}';
 let configStatusMode = 'active';
 let project = null;
 let allConfigs = [];
+let dragConfigUUID = '';
+let isReorderingConfigs = false;
 let projectVariants = [];
 let projectsCatalog = [];
 let variantMenuInitialized = false;
@@ -221,6 +223,11 @@ function escapeHtml(text) {
     return div.innerHTML;
 }
 
+function formatMoneyNoDecimals(value) {
+    const safe = Number.isFinite(Number(value)) ? Number(value) : 0;
+    return '$' + Math.round(safe).toLocaleString('en-US');
+}
+
 function resolveProjectTrackerURL(projectData) {
     if (!projectData) return '';
     const explicitURL = (projectData.tracker_url || '').trim();
@@ -350,42 +357,53 @@ function renderConfigs(configs) {
     let totalSum = 0;
     let html = '<div class="bg-white rounded-lg shadow overflow-hidden"><table class="w-full">';
     html += '<thead class="bg-gray-50"><tr>';
-    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Дата</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Line</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">модель</th>';
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Название</th>';
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Автор</th>';
-    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Цена (за 1 шт)</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Цена за 1 шт.</th>';
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Кол-во</th>';
-    html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Сумма</th>';
-    html += '<th class="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">Ревизия</th>';
+    html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Стоимость</th>';
+    html += '<th class="px-2 py-3 text-center text-xs font-medium text-gray-500 uppercase w-12"></th>';
     html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Действия</th>';
-    html += '</tr></thead><tbody class="divide-y">';
+    html += '</tr></thead><tbody class="divide-y" id="project-configs-tbody">';
 
-    configs.forEach(c => {
-        const date = new Date(c.created_at).toLocaleDateString('ru-RU');
+    configs.forEach((c, idx) => {
         const total = c.total_price || 0;
         const serverCount = c.server_count || 1;
         const author = c.owner_username || (c.user && c.user.username) || '—';
         const unitPrice = serverCount > 0 ? (total / serverCount) : 0;
+        const lineValue = (typeof c.line === 'number' && c.line > 0) ? c.line : ((idx + 1) * 10);
+        const serverModel = (c.server_model || '').trim() || '—';
         totalSum += total;
 
-        html += '<tr class="hover:bg-gray-50">';
-        html += '<td class="px-4 py-3 text-sm text-gray-500">' + date + '</td>';
+        const draggable = configStatusMode === 'active' ? 'true' : 'false';
+        html += '<tr class="hover:bg-gray-50" draggable="' + draggable + '" data-config-uuid="' + c.uuid + '" ondragstart="onConfigDragStart(event)" ondragover="onConfigDragOver(event)" ondragleave="onConfigDragLeave(event)" ondrop="onConfigDrop(event)" ondragend="onConfigDragEnd(event)">';
+        if (configStatusMode === 'active') {
+            html += '<td class="px-4 py-3 text-sm text-gray-500">';
+            html += '<span class="inline-flex items-center gap-2"><span class="drag-handle text-gray-400 hover:text-gray-700 cursor-grab active:cursor-grabbing select-none" title="Перетащить для изменения порядка" aria-label="Перетащить">';
+            html += '<svg class="w-4 h-4 pointer-events-none" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 6h.01M8 12h.01M8 18h.01M16 6h.01M16 12h.01M16 18h.01"></path></svg>';
+            html += '</span><span>' + lineValue + '</span></span></td>';
+        } else {
+            html += '<td class="px-4 py-3 text-sm text-gray-500">' + lineValue + '</td>';
+        }
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(serverModel) + '</td>';
         if (configStatusMode === 'archived') {
             html += '<td class="px-4 py-3 text-sm font-medium text-gray-700">' + escapeHtml(c.name) + '</td>';
         } else {
             html += '<td class="px-4 py-3 text-sm font-medium"><a href="/configurator?uuid=' + c.uuid + '" class="text-blue-600 hover:text-blue-800 hover:underline">' + escapeHtml(c.name) + '</a></td>';
         }
         html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(author) + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-gray-500">$' + unitPrice.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + formatMoneyNoDecimals(unitPrice) + '</td>';
         if (configStatusMode === 'archived') {
             html += '<td class="px-4 py-3 text-sm text-gray-500">' + serverCount + '</td>';
         } else {
             html += '<td class="px-4 py-3 text-sm text-gray-500"><input type="number" min="1" value="' + serverCount + '" class="w-16 px-1 py-0.5 border rounded text-center text-sm" data-uuid="' + c.uuid + '" data-prev="' + serverCount + '" onchange="updateConfigServerCount(this)"></td>';
         }
-        html += '<td class="px-4 py-3 text-sm text-right" data-total-uuid="' + c.uuid + '">$' + total.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-right" data-total-uuid="' + c.uuid + '">' + formatMoneyNoDecimals(total) + '</td>';
         const versionNo = c.current_version_no || 1;
-        html += '<td class="px-4 py-3 text-sm text-center text-gray-500">v' + versionNo + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-right space-x-2">';
+        html += '<td class="px-2 py-3 text-sm text-center text-gray-500 w-12">v' + versionNo + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-right whitespace-nowrap"><div class="inline-flex items-center justify-end gap-2">';
         if (configStatusMode === 'archived') {
             html += '<button onclick="reactivateConfig(\'' + c.uuid + '\')" class="text-emerald-600 hover:text-emerald-800" title="Восстановить">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path></svg></button>';
@@ -397,15 +415,16 @@ function renderConfigs(configs) {
             html += '<button onclick="deleteConfig(\'' + c.uuid + '\')" class="text-red-600 hover:text-red-800" title="В архив">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path></svg></button>';
         }
-        html += '</td></tr>';
+        html += '</div></td></tr>';
     });
 
     html += '</tbody>';
     html += '<tfoot class="bg-gray-50 border-t">';
     html += '<tr>';
-    html += '<td class="px-4 py-3 text-sm font-medium text-gray-700" colspan="4">Итого по проекту</td>';
+    html += '<td class="px-4 py-3 text-sm font-medium text-gray-700" colspan="5">Итого по проекту</td>';
     html += '<td class="px-4 py-3 text-sm text-gray-700">' + configs.length + '</td>';
-    html += '<td class="px-4 py-3 text-sm text-right font-semibold text-gray-900" data-footer-total="1">$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+    html += '<td class="px-4 py-3 text-sm text-right font-semibold text-gray-900" data-footer-total="1">' + formatMoneyNoDecimals(totalSum) + '</td>';
+    html += '<td class="px-4 py-3"></td>';
     html += '<td class="px-4 py-3"></td>';
     html += '<td class="px-4 py-3"></td>';
     html += '</tr>';
@@ -994,6 +1013,105 @@ document.addEventListener('keydown', function(e) {
     }
 });
 
+function onConfigDragStart(event) {
+    if (configStatusMode !== 'active' || isReorderingConfigs) {
+        event.preventDefault();
+        return;
+    }
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row) {
+        event.preventDefault();
+        return;
+    }
+
+    dragConfigUUID = row.dataset.configUuid || '';
+    if (!dragConfigUUID) {
+        event.preventDefault();
+        return;
+    }
+    row.classList.add('opacity-50');
+    event.dataTransfer.effectAllowed = 'move';
+    event.dataTransfer.setData('text/plain', dragConfigUUID);
+}
+
+function onConfigDragOver(event) {
+    if (!dragConfigUUID || configStatusMode !== 'active') return;
+    event.preventDefault();
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row || row.dataset.configUuid === dragConfigUUID) return;
+    row.classList.add('ring-2', 'ring-blue-300');
+}
+
+function onConfigDragLeave(event) {
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row) return;
+    row.classList.remove('ring-2', 'ring-blue-300');
+}
+
+async function onConfigDrop(event) {
+    if (!dragConfigUUID || configStatusMode !== 'active' || isReorderingConfigs) return;
+    event.preventDefault();
+
+    const targetRow = event.target.closest('tr[data-config-uuid]');
+    if (!targetRow) return;
+    targetRow.classList.remove('ring-2', 'ring-blue-300');
+
+    const targetUUID = targetRow.dataset.configUuid || '';
+    if (!targetUUID || targetUUID === dragConfigUUID) return;
+
+    const previous = allConfigs.slice();
+    const fromIndex = allConfigs.findIndex(c => c.uuid === dragConfigUUID);
+    const toIndex = allConfigs.findIndex(c => c.uuid === targetUUID);
+    if (fromIndex < 0 || toIndex < 0) return;
+
+    const [moved] = allConfigs.splice(fromIndex, 1);
+    allConfigs.splice(toIndex, 0, moved);
+    renderConfigs(allConfigs);
+    await saveConfigReorder(previous);
+}
+
+function onConfigDragEnd() {
+    document.querySelectorAll('tr[data-config-uuid]').forEach(row => {
+        row.classList.remove('ring-2', 'ring-blue-300', 'opacity-50');
+    });
+    dragConfigUUID = '';
+}
+
+async function saveConfigReorder(previousConfigs) {
+    if (isReorderingConfigs) return;
+    isReorderingConfigs = true;
+    const orderedUUIDs = allConfigs.map(c => c.uuid);
+
+    try {
+        const resp = await fetch('/api/projects/' + projectUUID + '/configs/reorder', {
+            method: 'PATCH',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({ordered_uuids: orderedUUIDs}),
+        });
+        if (!resp.ok) {
+            const data = await resp.json().catch(() => ({}));
+            throw new Error(data.error || 'Не удалось сохранить порядок');
+        }
+        const data = await resp.json();
+        allConfigs = data.configurations || allConfigs;
+        renderConfigs(allConfigs);
+        if (typeof showToast === 'function') {
+            showToast('Порядок сохранён', 'success');
+        }
+    } catch (e) {
+        allConfigs = previousConfigs.slice();
+        renderConfigs(allConfigs);
+        if (typeof showToast === 'function') {
+            showToast(e.message || 'Не удалось сохранить порядок', 'error');
+        } else {
+            alert(e.message || 'Не удалось сохранить порядок');
+        }
+    } finally {
+        isReorderingConfigs = false;
+        dragConfigUUID = '';
+    }
+}
+
 async function updateConfigServerCount(input) {
     const uuid = input.dataset.uuid;
     const prevValue = parseInt(input.dataset.prev) || 1;
@@ -1018,7 +1136,7 @@ async function updateConfigServerCount(input) {
         // Update row total price
         const totalCell = document.querySelector('[data-total-uuid="' + uuid + '"]');
         if (totalCell && updated.total_price != null) {
-            totalCell.textContent = '$' + updated.total_price.toLocaleString('en-US', {minimumFractionDigits: 2});
+            totalCell.textContent = formatMoneyNoDecimals(updated.total_price);
         }
         // Update the config in allConfigs and recalculate footer total
         for (let i = 0; i < allConfigs.length; i++) {
@@ -1040,7 +1158,7 @@ function updateFooterTotal() {
     allConfigs.forEach(c => { totalSum += (c.total_price || 0); });
     const footer = document.querySelector('tfoot td[data-footer-total]');
     if (footer) {
-        footer.textContent = '$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2});
+        footer.textContent = formatMoneyNoDecimals(totalSum);
     }
 }