add buyCollateral script and add setTargetReserves function for lending contract

scripts/upgrade/upgradeLending.ts

@@ -98,12 +98,6 @@ async function main() {
     console.log("=====================================\n");
 
     console.log("💾 升级信息已保存到:", deploymentsPath);
-    console.log("");
-    console.log("📌 重要提示:");
-    console.log("  1. 代理地址保持不变，用户无需更改合约地址");
-    console.log("  2. 所有状态数据已保留");
-    console.log("  3. 建议运行验证脚本确认升级成功");
-    console.log("  4. 建议在测试网充分测试后再升级主网\n");
 }
 
 main()