refactor(ui): 账号改为平台→账号→资产三层交互(平台卡片入口+展开看名下资产,移除平铺账号区)

static/js/store.js

@@ -25,6 +25,7 @@ const store = reactive({
   assetModal: { show: false, editing: null, form: null },
   providerModal: { show: false, editing: null, form: null },
   accountModal: { show: false, editing: null, form: null },
+  accountsModal: { show: false, providerSlug: null }, // 账号查看弹窗：providerSlug 为 null 时看全部
 });
 
 function applyDark() {
@@ -166,6 +167,9 @@ async function deleteProvider(p) {
 }
 
 /* ---------------- 账号操作 ---------------- */
+function openAccountsView(providerSlug) {
+  store.accountsModal = { show: true, providerSlug: providerSlug || null };
+}
 function openAccountCreate(platform) {
   store.accountModal = { show: true, editing: null, form: { name: '', platform: platform || '', remark: '' } };
 }