fix(*): 模型目录 - 修复前台开关、系统模型价格与访问控制

backend/internal/model/models_logical_model.go

@@ -80,3 +80,26 @@ type RouteAttempt struct {
 	StartedAt              time.Time  `json:"startedAt"`
 	CompletedAt            *time.Time `json:"completedAt"`
 }
+
+// LogicalModelPriceSKU 表示前台模型在统一定价模式下的独立售价 SKU。
+// 当 pricePolicy = unified 时，用户价格由此 SKU 决定，而非渠道价格。
+// SelectorJSON 统一使用结构化意图选择器，支持复杂的能力组合定价。
+type LogicalModelPriceSKU struct {
+	ID                           string    `json:"id" gorm:"primaryKey;size:36"`
+	LogicalModelRevisionID       string    `json:"logicalModelRevisionId" gorm:"size:36;index;uniqueIndex:idx_logical_sku_active,priority:1,where:deleted_at IS NULL"`
+	Code                         string    `json:"code" gorm:"size:80"`
+	Name                         string    `json:"name" gorm:"size:160"`
+	SelectorKey                  string    `json:"selectorKey" gorm:"size:500;not null;default:{};uniqueIndex:idx_logical_sku_active,priority:2,where:deleted_at IS NULL"`
+	SelectorJSON                 string    `json:"-" gorm:"type:text;not null;default:{}"`
+	BillingMode                  string    `json:"billingMode" gorm:"size:32"`
+	UnitPriceMicrocredits        int64     `json:"unitPriceMicrocredits"`
+	InputTokenPriceMicrocredits  int64     `json:"inputTokenPriceMicrocredits"`
+	OutputTokenPriceMicrocredits int64     `json:"outputTokenPriceMicrocredits"`
+	CachedTokenPriceMicrocredits int64     `json:"cachedTokenPriceMicrocredits"`
+	Priority                     int       `json:"priority" gorm:"index"`
+	Enabled                      bool      `json:"enabled" gorm:"index"`
+	Version                      int       `json:"version"`
+	CreatedAt                    time.Time `json:"createdAt"`
+	UpdatedAt                    time.Time `json:"updatedAt"`
+	DeletedAt                    *time.Time `json:"-" gorm:"index"`
+}