feat: 添加多链支持和 Lending 借贷系统

- 新增 ARB Sepolia + BNB Testnet 多链支持
- 添加 LendingPanel 借贷系统组件
- 添加 LendingAdminPanel 管理面板
- 添加 USDCPanel USDC 操作组件
- 添加 HoldersPanel 持有人信息组件
- 添加 AutoTestPanel 自动化测试组件
- 重构 LP 组件为模块化结构 (LP/)
- 添加多个调试和测试脚本
- 修复 USDC 精度动态配置
- 优化合约配置支持多链切换

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/scripts/check-price-oracle.js

@@ -0,0 +1,75 @@
+import { createPublicClient, http, getAddress } from 'viem'
+import { arbitrumSepolia } from 'viem/chains'
+
+const client = createPublicClient({
+  chain: arbitrumSepolia,
+  transport: http('https://api.zan.top/node/v1/arb/sepolia/baf84c429d284bb5b676cb8c9ca21c07')
+})
+
+const LENDING_PRICE_FEED = getAddress('0xE82c7cB9CfA42D6eb7e443956b78f8290249c316')
+const YT_A = getAddress('0x97204190B35D9895a7a47aa7BaC61ac08De3cF05')
+const USDC = getAddress('0x75faf114eafb1BDbe2F0316DF893fd58CE46AA4d')
+
+const PRICE_FEED_ABI = [
+  {
+    inputs: [{ name: 'asset', type: 'address' }],
+    name: 'getPrice',
+    outputs: [{ name: '', type: 'uint256' }],
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    inputs: [{ name: 'asset', type: 'address' }],
+    name: 'getAssetPrice',
+    outputs: [{ name: '', type: 'uint256' }],
+    stateMutability: 'view',
+    type: 'function'
+  }
+]
+
+async function testPrice(asset, name) {
+  console.log(`\n=== ${name} (${asset}) ===`)
+
+  // 尝试 getPrice
+  try {
+    const price1 = await client.readContract({
+      address: LENDING_PRICE_FEED,
+      abi: PRICE_FEED_ABI,
+      functionName: 'getPrice',
+      args: [asset]
+    })
+    console.log('✓ getPrice:', price1.toString(), '(', Number(price1) / 1e8, 'USD )')
+  } catch (error) {
+    console.log('✗ getPrice 失败:', error.message.split('\n')[0])
+  }
+
+  // 尝试 getAssetPrice
+  try {
+    const price2 = await client.readContract({
+      address: LENDING_PRICE_FEED,
+      abi: PRICE_FEED_ABI,
+      functionName: 'getAssetPrice',
+      args: [asset]
+    })
+    console.log('✓ getAssetPrice:', price2.toString(), '(', Number(price2) / 1e8, 'USD )')
+  } catch (error) {
+    console.log('✗ getAssetPrice 失败:', error.message.split('\n')[0])
+  }
+}
+
+async function main() {
+  console.log('检查价格预言机\n')
+  console.log('Price Feed 地址:', LENDING_PRICE_FEED)
+
+  await testPrice(YT_A, 'YT-A')
+  await testPrice(USDC, 'USDC')
+
+  console.log('\n=== 诊断 ===')
+  console.log('如果价格查询失败，这就是为什么 getUserAccountData 会 revert')
+  console.log('需要：')
+  console.log('1. 检查价格预言机合约是否正确部署')
+  console.log('2. 检查是否为 YT-A 设置了价格')
+  console.log('3. 可能需要手动调用 setPrice() 来设置价格')
+}
+
+main()