refactor: rename AI expert item model

backend/internal/models/ai_expert_items.go

@@ -0,0 +1,30 @@
+package models
+
+import "time"
+
+// SenlinAgentAIExpertItem 是本地专家库中的可选 AI 角色。
+type SenlinAgentAIExpertItem struct {
+	ID               uint                        `gorm:"primaryKey"`
+	Identity         string                      `gorm:"type:char(36);uniqueIndex"`
+	Slug             string                      `gorm:"size:160;uniqueIndex;not null"`
+	CategoryID       uint                        `gorm:"index"`
+	CategoryIdentity string                      `gorm:"type:char(36);index"`
+	ExpertCategory   SenlinAgentAIExpertCategory `gorm:"foreignKey:CategoryID"`
+	Category         string                      `gorm:"size:80;index;not null"`
+	CategoryName     string                      `gorm:"size:120;not null"`
+	Name             string                      `gorm:"size:160;index;not null"`
+	Description      string                      `gorm:"type:text;not null"`
+	Emoji            string                      `gorm:"size:32"`
+	Color            string                      `gorm:"size:32"`
+	SystemPrompt     string                      `gorm:"type:text;not null"`
+	Source           string                      `gorm:"size:255;not null"`
+	Reference        string                      `gorm:"size:255"`
+	SourceLicense    string                      `gorm:"size:32;not null"`
+	Enabled          bool                        `gorm:"not null;default:true;index"`
+	CreatedAt        time.Time
+	UpdatedAt        time.Time
+}
+
+func (SenlinAgentAIExpertItem) TableName() string {
+	return "senlin_agent_ai_experts"
+}