refactor: удалить мёртвый код qt_lot_metadata

Таблица qt_lot_metadata не использовалась в рантайме —
ни один репозиторий/сервис/хендлер к ней не обращался.

- удалён models/metadata.go (LotMetadata, Specs, PriceMethod, PriceFreshness)
- удалена LocalToComponent() из localdb/converters.go
- убран &LotMetadata{} из AutoMigrate
- убраны мёртвые поля PriceFreshness/PopularityScore/Specs из ComponentView

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/localdb/converters.go

@@ -330,14 +330,3 @@ func LocalToPricelistItem(local *LocalPricelistItem, serverPricelistID uint) *mo
 	}
 }
 
-// LocalToComponent converts LocalComponent to models.LotMetadata
-func LocalToComponent(local *LocalComponent) *models.LotMetadata {
-	return &models.LotMetadata{
-		LotName: local.LotName,
-		Model:   local.Model,
-		Lot: &models.Lot{
-			LotName:        local.LotName,
-			LotDescription: local.LotDescription,
-		},
-	}
-}

internal/models/metadata.go

@@ -1,92 +0,0 @@
-package models
-
-import (
-	"database/sql/driver"
-	"encoding/json"
-	"errors"
-	"time"
-)
-
-type PriceMethod string
-
-const (
-	PriceMethodManual         PriceMethod = "manual"
-	PriceMethodMedian         PriceMethod = "median"
-	PriceMethodAverage        PriceMethod = "average"
-	PriceMethodWeightedMedian PriceMethod = "weighted_median"
-)
-
-type Specs map[string]interface{}
-
-func (s Specs) Value() (driver.Value, error) {
-	return json.Marshal(s)
-}
-
-func (s *Specs) Scan(value interface{}) error {
-	if value == nil {
-		*s = make(Specs)
-		return nil
-	}
-	bytes, ok := value.([]byte)
-	if !ok {
-		return errors.New("type assertion to []byte failed")
-	}
-	return json.Unmarshal(bytes, s)
-}
-
-type LotMetadata struct {
-	LotName          string       `gorm:"column:lot_name;primaryKey;size:255" json:"lot_name"`
-	CategoryID       *uint        `gorm:"column:category_id" json:"category_id"`
-	Model            string       `gorm:"size:100" json:"model"`
-	Specs            Specs        `gorm:"type:json" json:"specs"`
-	CurrentPrice     *float64     `gorm:"type:decimal(12,2)" json:"current_price"`
-	PriceMethod      PriceMethod  `gorm:"type:enum('manual','median','average','weighted_median');default:'median'" json:"price_method"`
-	PricePeriodDays  int          `gorm:"default:90" json:"price_period_days"`
-	PriceCoefficient float64      `gorm:"type:decimal(5,2);default:0" json:"price_coefficient"`
-	ManualPrice      *float64     `gorm:"type:decimal(12,2)" json:"manual_price"`
-	PriceUpdatedAt   *time.Time   `json:"price_updated_at"`
-	RequestCount     int          `gorm:"default:0" json:"request_count"`
-	LastRequestDate  *time.Time   `gorm:"type:date" json:"last_request_date"`
-	PopularityScore  float64      `gorm:"type:decimal(10,4);default:0" json:"popularity_score"`
-	MetaPrices       string       `gorm:"size:1000" json:"meta_prices"`
-	MetaMethod       string       `gorm:"size:20" json:"meta_method"`
-	MetaPeriodDays   int          `gorm:"default:90" json:"meta_period_days"`
-	IsHidden         bool         `gorm:"default:false" json:"is_hidden"`
-
-	// Relations
-	Lot      *Lot      `gorm:"foreignKey:LotName;references:LotName" json:"lot,omitempty"`
-	Category *Category `gorm:"foreignKey:CategoryID" json:"category,omitempty"`
-}
-
-func (LotMetadata) TableName() string {
-	return "qt_lot_metadata"
-}
-
-type PriceFreshness string
-
-const (
-	FreshnessFresh    PriceFreshness = "fresh"
-	FreshnessNormal   PriceFreshness = "normal"
-	FreshnessStale    PriceFreshness = "stale"
-	FreshnessCritical PriceFreshness = "critical"
-)
-
-func (m *LotMetadata) GetPriceFreshness(greenDays, yellowDays, redDays, minQuotes int) PriceFreshness {
-	if m.CurrentPrice == nil || *m.CurrentPrice == 0 {
-		return FreshnessCritical
-	}
-	if m.PriceUpdatedAt == nil {
-		return FreshnessCritical
-	}
-
-	daysSince := int(time.Since(*m.PriceUpdatedAt).Hours() / 24)
-
-	if daysSince < greenDays && m.RequestCount >= minQuotes {
-		return FreshnessFresh
-	} else if daysSince < yellowDays {
-		return FreshnessNormal
-	} else if daysSince < redDays {
-		return FreshnessStale
-	}
-	return FreshnessCritical
-}

internal/models/models.go

@@ -11,7 +11,6 @@ import (
 func AllModels() []interface{} {
 	return []interface{}{
 		&Category{},
-		&LotMetadata{},
 		&Project{},
 		&Configuration{},
 		&Pricelist{},

internal/services/component.go

@@ -1,9 +1,5 @@
 package services
 
-import (
-	"git.mchus.pro/mchus/quoteforge/internal/models"
-)
-
 type ComponentListResult struct {
 	Items      []ComponentView `json:"items"`
 	TotalCount int64           `json:"total_count"`
@@ -13,12 +9,9 @@ type ComponentListResult struct {
 }
 
 type ComponentView struct {
-	LotName         string                `json:"lot_name"`
-	Description     string                `json:"description"`
-	Category        string                `json:"category"`
-	CategoryName    string                `json:"category_name"`
-	Model           string                `json:"model"`
-	PriceFreshness  models.PriceFreshness `json:"price_freshness"`
-	PopularityScore float64               `json:"popularity_score"`
-	Specs           models.Specs          `json:"specs,omitempty"`
+	LotName      string `json:"lot_name"`
+	Description  string `json:"description"`
+	Category     string `json:"category"`
+	CategoryName string `json:"category_name"`
+	Model        string `json:"model"`
 }