feat: 添加货币管理功能，更新国际化支持，移除报表相关代码

src/hooks/use-admin-currency-catalog.ts

@@ -0,0 +1,32 @@
+"use client";
+
+import { useEffect } from "react";
+
+import { getAdminCurrencies } from "@/api/admin-currencies";
+import type { AdminCurrencyRow } from "@/types/api/admin-currency";
+
+let cachedAdminCurrencies: AdminCurrencyRow[] = [];
+let inflightAdminCurrencyLoad: Promise<void> | null = null;
+
+export function getCachedAdminCurrencies(): AdminCurrencyRow[] {
+  return cachedAdminCurrencies;
+}
+
+export function useAdminCurrencyCatalog() {
+  useEffect(() => {
+    if (cachedAdminCurrencies.length > 0 || inflightAdminCurrencyLoad !== null) {
+      return;
+    }
+
+    inflightAdminCurrencyLoad = getAdminCurrencies()
+      .then((data) => {
+        cachedAdminCurrencies = data.items;
+      })
+      .catch(() => {
+        // 币种目录失败时回退默认 2 位小数，不阻断后台页面。
+      })
+      .finally(() => {
+        inflightAdminCurrencyLoad = null;
+      });
+  }, []);
+}