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-compound-v3-storage.js

@@ -0,0 +1,119 @@
+import { createPublicClient, http, getAddress, keccak256, toHex, pad, concat } 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_PROXY = getAddress('0xCb4E7B1069F6C26A1c27523ce4c8dfD884552d1D')
+const USER = getAddress('0xa013422A5918CD099C63c8CC35283EACa99a705d')
+const YT_A = getAddress('0x97204190B35D9895a7a47aa7BaC61ac08De3cF05')
+
+// Compound V3 使用的公开状态变量
+const COMET_ABI = [
+  {
+    inputs: [
+      { name: 'account', type: 'address' },
+      { name: 'asset', type: 'address' }
+    ],
+    name: 'userCollateral',
+    outputs: [
+      {
+        components: [
+          { name: 'balance', type: 'uint128' },
+          { name: '_reserved', type: 'uint128' }
+        ],
+        name: '',
+        type: 'tuple'
+      }
+    ],
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    inputs: [{ name: 'account', type: 'address' }],
+    name: 'balanceOf',
+    outputs: [{ name: '', type: 'uint256' }],
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    inputs: [{ name: 'account', type: 'address' }],
+    name: 'borrowBalanceOf',
+    outputs: [{ name: '', type: 'uint256' }],
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    inputs: [
+      { name: 'account', type: 'address' },
+      { name: 'asset', type: 'address' }
+    ],
+    name: 'collateralBalanceOf',
+    outputs: [{ name: '', type: 'uint128' }],
+    stateMutability: 'view',
+    type: 'function'
+  }
+]
+
+async function main() {
+  console.log('\n检查 Compound V3 存储结构\n')
+  console.log('合约:', LENDING_PROXY)
+  console.log('用户:', USER)
+  console.log('抵押品:', YT_A)
+  console.log()
+
+  // 测试 Compound V3 原生函数
+  for (const func of COMET_ABI) {
+    console.log(`--- ${func.name} ---`)
+    try {
+      let result
+      if (func.name === 'userCollateral') {
+        result = await client.readContract({
+          address: LENDING_PROXY,
+          abi: [func],
+          functionName: func.name,
+          args: [USER, YT_A]
+        })
+        console.log('✓ 成功!')
+        console.log('  balance:', result.balance.toString(), '(', Number(result.balance) / 1e18, 'YT-A )')
+        console.log('  _reserved:', result._reserved.toString())
+      } else if (func.name === 'collateralBalanceOf') {
+        result = await client.readContract({
+          address: LENDING_PROXY,
+          abi: [func],
+          functionName: func.name,
+          args: [USER, YT_A]
+        })
+        console.log('✓ 成功:', result.toString(), '(', Number(result) / 1e18, 'YT-A )')
+      } else if (func.name === 'balanceOf') {
+        result = await client.readContract({
+          address: LENDING_PROXY,
+          abi: [func],
+          functionName: func.name,
+          args: [USER]
+        })
+        console.log('✓ 成功:', result.toString(), '(', Number(result) / 1e6, 'USDC )')
+      } else {
+        result = await client.readContract({
+          address: LENDING_PROXY,
+          abi: [func],
+          functionName: func.name,
+          args: [USER]
+        })
+        console.log('✓ 成功:', result.toString())
+      }
+    } catch (error) {
+      console.log('✗ 失败:', error.message.split('\n')[0])
+    }
+    console.log()
+  }
+
+  console.log('=== 结论 ===')
+  console.log('如果上面的 Compound V3 原生函数能工作，')
+  console.log('说明合约使用了 Compound V3 的数据结构，')
+  console.log('前端应该调用这些函数而不是自定义的 getUserCollateral 等。\n')
+}
+
+main()