拆分 AccountCenter 超大组件：提取类型、常量、钱包、支付等独立模块

- AccountCenter.tsx 从 3565 行缩减约 1000 行
- 新增 8 个模块：types / constants / formatters / account-copy / wallet / payment-utils / usePaymentState / AccountInfoRow
- 同步更新 paymentShell 测试

Confidence: high

frontend/components/account/constants.ts

@@ -0,0 +1,18 @@
+export const WALLETCONNECT_PROJECT_ID = String(
+  process.env.NEXT_PUBLIC_WALLETCONNECT_PROJECT_ID || "",
+).trim();
+export const WALLETCONNECT_POLYGON_RPC_URL = String(
+  process.env.NEXT_PUBLIC_WALLETCONNECT_POLYGON_RPC_URL ||
+    "https://polygon-bor-rpc.publicnode.com",
+).trim();
+export const TELEGRAM_GROUP_URL = "https://t.me/+Se93RpNQ58FhYmZh";
+export const TELEGRAM_BOT_URL = String(
+  process.env.NEXT_PUBLIC_TELEGRAM_BOT_URL || "https://t.me/WeatherQuant_bot",
+).trim();
+export const TELEGRAM_TOPICS_GROUP_URL = TELEGRAM_GROUP_URL;
+export const SUBSCRIPTION_HELP_HREF = "/subscription-help";
+export const PAYMENT_RECOVERY_STORAGE_KEY = "polyweather:lastPaymentRecovery";
+export const PAYMENT_RECOVERY_TTL_MS = 6 * 60 * 60 * 1000;
+export const WALLET_REQUEST_TIMEOUT_MS = 60_000;
+export const WALLET_TRANSACTION_REQUEST_TIMEOUT_MS = 120_000;
+