feat: 完善平台总后台模块

backend/api/internal/models/aud_export_log.go

@@ -0,0 +1,19 @@
+package models
+
+import (
+	"git.apinb.com/bsm-sdk/core/database"
+	"time"
+)
+
+// AudExportLog 对应 aud_export_log，保存敏感导出审计。
+type AudExportLog struct {
+	Entity
+	ApplicantIdentity string     `gorm:"column:applicant_identity;type:varchar(36);not null;index" json:"applicant_identity"`
+	Purpose           string     `gorm:"column:purpose;type:varchar(255);not null" json:"purpose"`
+	FieldScope        string     `gorm:"column:field_scope;type:jsonb;not null;default:'{}'" json:"field_scope"`
+	ApprovedAt        *time.Time `gorm:"column:approved_at;type:timestamptz" json:"approved_at"`
+	FileURI           string     `gorm:"column:file_uri;type:varchar(512);not null;default:''" json:"file_uri"`
+}
+
+func init()                                   { database.AppendMigrate(&AudExportLog{}) }
+func (table *AudExportLog) TableName() string { return "aud_export_log" }