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/electron.vite.config.ts

@@ -3,6 +3,8 @@ import { fileURLToPath } from "node:url";
 
 import vue from "@vitejs/plugin-vue";
 import { defineConfig, externalizeDepsPlugin } from "electron-vite";
+import Components from "unplugin-vue-components/vite";
+import { AntDesignVueResolver } from "unplugin-vue-components/resolvers";
 
 const rootDir = fileURLToPath(new URL(".", import.meta.url));
 
@@ -48,7 +50,17 @@ export default defineConfig({
     },
   },
   renderer: {
-    plugins: [vue()],
+    plugins: [
+      vue(),
+      Components({
+        dts: false,
+        resolvers: [
+          AntDesignVueResolver({
+            importStyle: false,
+          }),
+        ],
+      }),
+    ],
     resolve: {
       alias: {
         "@renderer": resolve(rootDir, "src/renderer"),