refactor(distribution): 重写分销迁移并落地利润百分比分成与货架比例

将 000064-000078 合并为 064/065/066，默认规则改为收号 35%、卖出 40%、服务费 25%。
货架调价改为增加分站 1 元兑换哈夫币比例。sql-guard 仅保护 main 已发布迁移。

backend/internal/modules/order/repository_test.go

@@ -118,19 +118,19 @@ func TestBuildOrderPricingDoesNotDiscountAllExtraItemOrder(t *testing.T) {
 	}
 }
 
-func TestCheckoutDoesNotRefundShelfMarkup(t *testing.T) {
+func TestCheckoutRefundsSiteRent(t *testing.T) {
 	order := model.RentalOrder{
-		RentAmountCent:      20000,
+		RentAmountCent:      8000,
 		OwnerRentAmountCent: 8000,
-		PlatformFeeCent:     2000,
+		PlatformFeeCent:     0,
 		BasePriceCent:       10000,
-		ShelfMarkupCent:     10000,
+		ShelfRatioDelta:     25,
 		DepositAmountCent:   1000,
 		AccountSnapshot: datatypes.JSON([]byte(`{
 			"haf_coin_amount": 100000000,
 			"asset_summary": {
 				"price_breakdown": {
-					"buyer_coin_base_price": 100,
+					"buyer_coin_base_price": 80,
 					"seller_coin_base_price": 80,
 					"consumable_price": 0
 				}
@@ -139,11 +139,11 @@ func TestCheckoutDoesNotRefundShelfMarkup(t *testing.T) {
 	}
 	settlement := calculateCheckoutSettlement(order, 0, 100, 0)
 	if settlement.RentRefundCent != 0 {
-		t.Fatalf("full consume must not refund shelf markup, rent refund = %d", settlement.RentRefundCent)
+		t.Fatalf("full consume must not refund rent, rent refund = %d", settlement.RentRefundCent)
 	}
 	zeroUse := calculateCheckoutSettlement(order, 0, 0, 0)
-	if zeroUse.RentRefundCent != 10000 {
-		t.Fatalf("unused listing refunds base price only, got %d want 10000", zeroUse.RentRefundCent)
+	if zeroUse.RentRefundCent != 8000 {
+		t.Fatalf("unused listing refunds site rent, got %d want 8000", zeroUse.RentRefundCent)
 	}
 }