feat: 完善平台总后台模块

backend/api/internal/models/aud_approval.go

@@ -0,0 +1,15 @@
+package models
+
+import "git.apinb.com/bsm-sdk/core/database"
+
+// AudApproval 对应 aud_approval，保存审批流与复核意见。
+type AudApproval struct {
+	Entity
+	BusinessType      string `gorm:"column:business_type;type:varchar(64);not null" json:"business_type"`
+	BusinessIdentity  string `gorm:"column:business_identity;type:varchar(36);not null;index" json:"business_identity"`
+	ApplicantIdentity string `gorm:"column:applicant_identity;type:varchar(36);not null;index" json:"applicant_identity"`
+	Opinion           string `gorm:"column:opinion;type:text;not null;default:''" json:"opinion"`
+}
+
+func init()                                  { database.AppendMigrate(&AudApproval{}) }
+func (table *AudApproval) TableName() string { return "aud_approval" }