refactor: rename safe and audit backend resources

backend/api/internal/models/audit_approval.go

@@ -0,0 +1,21 @@
+package models
+
+import (
+	"time"
+
+	"git.apinb.com/bsm-sdk/core/database"
+)
+
+// AuditApproval 对应 audit_approval，保存审批流与复核意见。
+type AuditApproval struct {
+	Entity                       // 公共实体字段
+	BusinessType      string     `gorm:"column:business_type;type:varchar(64);not null" json:"business_type"`                        // business_type 业务字段
+	BusinessIdentity  string     `gorm:"column:business_identity;type:varchar(36);not null;index" json:"business_identity"`          // business_identity 业务字段
+	ApplicantIdentity string     `gorm:"column:applicant_identity;type:varchar(36);not null;index" json:"applicant_identity"`        // applicant_identity 业务字段
+	Opinion           string     `gorm:"column:opinion;type:text;not null;default:''" json:"opinion"`                                // opinion 业务字段
+	HandlerIdentity   string     `gorm:"column:handler_identity;type:varchar(36);not null;default:'';index" json:"handler_identity"` // handler_identity 业务字段
+	HandledAt         *time.Time `gorm:"column:handled_at;type:timestamptz" json:"handled_at"`                                       // handled_at 业务字段
+}
+
+func init()                                    { database.AppendMigrate(&AuditApproval{}) }
+func (table *AuditApproval) TableName() string { return "audit_approval" }