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/find-missing-tokens.js

@@ -0,0 +1,130 @@
+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 YT_A = getAddress('0x97204190B35D9895a7a47aa7BaC61ac08De3cF05')
+const USER = getAddress('0xa013422A5918CD099C63c8CC35283EACa99a705d')
+const LENDING_PROXY = getAddress('0xCb4E7B1069F6C26A1c27523ce4c8dfD884552d1D')
+
+const TRANSFER_EVENT = {
+  type: 'event',
+  name: 'Transfer',
+  inputs: [
+    { indexed: true, name: 'from', type: 'address' },
+    { indexed: true, name: 'to', type: 'address' },
+    { indexed: false, name: 'value', type: 'uint256' }
+  ]
+}
+
+async function main() {
+  console.log('\n追踪丢失的 YT-A 代币...\n')
+  console.log('你的地址:', USER)
+  console.log('当前余额: 10 YT-A')
+  console.log('之前余额: 400 YT-A')
+  console.log('丢失数量: 390 YT-A\n')
+
+  const latestBlock = await client.getBlockNumber()
+  console.log('最新区块:', latestBlock)
+  console.log('查询范围: 最近 10000 个区块\n')
+
+  try {
+    // 查找所有从用户地址发出的转账
+    console.log('=== 查找所有转出记录 ===\n')
+    const logsOut = await client.getLogs({
+      address: YT_A,
+      event: TRANSFER_EVENT,
+      args: { from: USER },
+      fromBlock: latestBlock - 10000n,
+      toBlock: latestBlock
+    })
+
+    if (logsOut.length === 0) {
+      console.log('✗ 未找到任何转出记录（最近 10000 个区块）\n')
+    } else {
+      console.log(`✓ 找到 ${logsOut.length} 笔转出记录:\n`)
+
+      let totalOut = 0n
+      logsOut.forEach((log, i) => {
+        const { from, to, value } = log.args
+        const isToLending = to.toLowerCase() === LENDING_PROXY.toLowerCase()
+        totalOut += value
+
+        console.log(`${i + 1}. 区块 ${log.blockNumber}`)
+        console.log(`   交易: ${log.transactionHash}`)
+        console.log(`   To: ${to} ${isToLending ? '<- Lending 合约' : ''}`)
+        console.log(`   数量: ${Number(value) / 1e18} YT-A`)
+        console.log()
+      })
+
+      console.log(`总转出: ${Number(totalOut) / 1e18} YT-A\n`)
+    }
+
+    // 查找所有转入用户地址的转账
+    console.log('=== 查找所有转入记录 ===\n')
+    const logsIn = await client.getLogs({
+      address: YT_A,
+      event: TRANSFER_EVENT,
+      args: { to: USER },
+      fromBlock: latestBlock - 10000n,
+      toBlock: latestBlock
+    })
+
+    if (logsIn.length === 0) {
+      console.log('✗ 未找到任何转入记录\n')
+    } else {
+      console.log(`✓ 找到 ${logsIn.length} 笔转入记录:\n`)
+
+      let totalIn = 0n
+      logsIn.forEach((log, i) => {
+        const { from, to, value } = log.args
+        totalIn += value
+
+        console.log(`${i + 1}. 区块 ${log.blockNumber}`)
+        console.log(`   交易: ${log.transactionHash}`)
+        console.log(`   From: ${from}`)
+        console.log(`   数量: ${Number(value) / 1e18} YT-A`)
+        console.log()
+      })
+
+      console.log(`总转入: ${Number(totalIn) / 1e18} YT-A\n`)
+    }
+
+    // 计算净流出
+    if (logsOut.length > 0 || logsIn.length > 0) {
+      const totalOut = logsOut.reduce((sum, log) => sum + log.args.value, 0n)
+      const totalIn = logsIn.reduce((sum, log) => sum + log.args.value, 0n)
+      const netFlow = Number(totalIn - totalOut) / 1e18
+
+      console.log('=== 汇总 ===')
+      console.log(`总转入: ${Number(totalIn) / 1e18} YT-A`)
+      console.log(`总转出: ${Number(totalOut) / 1e18} YT-A`)
+      console.log(`净变化: ${netFlow > 0 ? '+' : ''}${netFlow} YT-A`)
+      console.log(`当前余额: 10 YT-A\n`)
+
+      // 检查代币是否在 Lending 合约中
+      console.log('=== 检查 Lending 合约余额 ===')
+      const lendingBalance = await client.readContract({
+        address: YT_A,
+        abi: [{
+          inputs: [{ name: 'account', type: 'address' }],
+          name: 'balanceOf',
+          outputs: [{ name: '', type: 'uint256' }],
+          stateMutability: 'view',
+          type: 'function'
+        }],
+        functionName: 'balanceOf',
+        args: [LENDING_PROXY]
+      })
+      console.log(`Lending 合约持有的 YT-A: ${Number(lendingBalance) / 1e18}\n`)
+    }
+
+  } catch (error) {
+    console.error('查询失败:', error.message)
+  }
+}
+
+main()