perf: lazy load selected UI provider (AEG-X-002)

frontend/src/shared/ui/provider/resolveUiProvider.js

@@ -1,10 +1,10 @@
-import { nativeUiProvider } from '../adapter/native/installNativeAdapter';
-import { primeVueUiProvider } from '../adapter/primevue/installPrimeVueAdapter';
-export function resolveUiProvider(name) {
+export async function resolveUiProvider(name) {
     const normalized = (name ?? 'primevue').trim().toLowerCase();
-    if (normalized === 'primevue')
-        return primeVueUiProvider;
-    if (normalized === 'native')
-        return nativeUiProvider;
+    if (normalized === 'primevue') {
+        return (await import('../adapter/primevue/installPrimeVueAdapter')).primeVueUiProvider;
+    }
+    if (normalized === 'native') {
+        return (await import('../adapter/native/installNativeAdapter')).nativeUiProvider;
+    }
     throw new Error(`Unsupported VITE_UI_ADAPTER '${name}'. Allowed values: primevue, native.`);
 }

frontend/src/shared/ui/provider/resolveUiProvider.ts

@@ -1,12 +1,14 @@
 import type { UiProvider } from './UiProvider'
-import { nativeUiProvider } from '../adapter/native/installNativeAdapter'
-import { primeVueUiProvider } from '../adapter/primevue/installPrimeVueAdapter'
 
 export type UiProviderName = 'primevue' | 'native'
 
-export function resolveUiProvider(name: string | undefined): UiProvider {
+export async function resolveUiProvider(name: string | undefined): Promise<UiProvider> {
   const normalized = (name ?? 'primevue').trim().toLowerCase()
-  if (normalized === 'primevue') return primeVueUiProvider
-  if (normalized === 'native') return nativeUiProvider
+  if (normalized === 'primevue') {
+    return (await import('../adapter/primevue/installPrimeVueAdapter')).primeVueUiProvider
+  }
+  if (normalized === 'native') {
+    return (await import('../adapter/native/installNativeAdapter')).nativeUiProvider
+  }
   throw new Error(`Unsupported VITE_UI_ADAPTER '${name}'. Allowed values: primevue, native.`)
 }

frontend/src/shared/ui/provider/tests/resolveUiProvider.spec.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from 'vitest'
+import { resolveUiProvider } from '../resolveUiProvider'
+
+describe('resolveUiProvider', () => {
+  it('loads the selected native provider', async () => {
+    await expect(resolveUiProvider('native')).resolves.toMatchObject({ id: 'native-accessible' })
+  })
+
+  it('fails closed for an unsupported provider before application mount', async () => {
+    await expect(resolveUiProvider('unsupported')).rejects.toThrow(
+      "Unsupported VITE_UI_ADAPTER 'unsupported'. Allowed values: primevue, native."
+    )
+  })
+})