新增: 兑换复验功能

- 新增 exchangeList 接口查询斗鱼真实兑换记录
- 前端添加「兑换复验」标签页
- 点击「🔍 复验」按钮可查询所有账号的兑换记录
- 复验结果与软件内部状态对比，用于验证抢购结果
- 移除 frontend/dist 的 git 跟踪

frontend/src/composables/useAccounts.ts

@@ -153,3 +153,50 @@ export function useAccounts() {
     buildAccountProducts
   }
 }
+
+export function useVerifyExchange() {
+  const { accounts } = useAccounts()
+  const verifyResults = ref<Record<string, any>>({})
+  const verifying = ref(false)
+
+  const verifyAccount = async (accountName: string) => {
+    try {
+      const result = await App.VerifyExchange(accountName)
+      verifyResults.value[accountName] = result
+      return result
+    } catch (e: any) {
+      verifyResults.value[accountName] = { success: false, error: e.message }
+      return { success: false, error: e.message }
+    }
+  }
+
+  const verifyAll = async () => {
+    verifying.value = true
+    const results: Record<string, any> = {}
+
+    for (const account of accounts.value) {
+      try {
+        const result = await App.VerifyExchange(account.name)
+        results[account.name] = result
+      } catch (e: any) {
+        results[account.name] = { success: false, error: e.message }
+      }
+    }
+
+    verifyResults.value = results
+    verifying.value = false
+    return results
+  }
+
+  const clearResults = () => {
+    verifyResults.value = {}
+  }
+
+  return {
+    verifyResults,
+    verifying,
+    verifyAccount,
+    verifyAll,
+    clearResults
+  }
+}