perf(desktop): lazy-load renderer routes and pause polling when hidden

Drop the eager Antd global import in favour of unplugin-vue-components
on-demand resolution, async route components, defineAsyncComponent for
the shell/login split, and a dynamic Modal import inside
showClientActionError. Pair that with a visibility-aware runtime poller
that stops the 15s snapshot refresh when the window is hidden and kicks
off an immediate refresh on re-show. Refresh DesktopShell nav with
inline icons and a calmer active/hover treatment, and land
ActionButton/DisclosurePanel/PaginationBar primitives for upcoming
views.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/renderer/routes.ts

@@ -1,20 +1,36 @@
-import { createRouter, createWebHashHistory } from "vue-router";
+import { createRouter, createWebHashHistory, type RouteRecordRaw } from "vue-router";
 
-import AccountsView from "./views/AccountsView.vue";
-import AiPlatformsView from "./views/AiPlatformsView.vue";
-import DiagnosticsView from "./views/DiagnosticsView.vue";
-import HomeView from "./views/HomeView.vue";
-import PublishManagementView from "./views/PublishManagementView.vue";
+const routes: RouteRecordRaw[] = [
+  {
+    path: "/",
+    name: "home",
+    component: () => import("./views/HomeView.vue"),
+  },
+  {
+    path: "/publish-management",
+    name: "publish-management",
+    component: () => import("./views/PublishManagementView.vue"),
+  },
+  { path: "/tasks", redirect: "/publish-management" },
+  {
+    path: "/media-platforms",
+    name: "media-platforms",
+    component: () => import("./views/AccountsView.vue"),
+  },
+  {
+    path: "/ai-platforms",
+    name: "ai-platforms",
+    component: () => import("./views/AiPlatformsView.vue"),
+  },
+  { path: "/accounts", redirect: "/media-platforms" },
+  {
+    path: "/diagnostics",
+    name: "diagnostics",
+    component: () => import("./views/DiagnosticsView.vue"),
+  },
+];
 
 export const router = createRouter({
   history: createWebHashHistory(),
-  routes: [
-    { path: "/", name: "home", component: HomeView },
-    { path: "/publish-management", name: "publish-management", component: PublishManagementView },
-    { path: "/tasks", redirect: "/publish-management" },
-    { path: "/media-platforms", name: "media-platforms", component: AccountsView },
-    { path: "/ai-platforms", name: "ai-platforms", component: AiPlatformsView },
-    { path: "/accounts", redirect: "/media-platforms" },
-    { path: "/diagnostics", name: "diagnostics", component: DiagnosticsView },
-  ],
+  routes,
 });