chore(landing): 🔧 Update Vite build config plugins/optimizations for frontend asset handling in landing page

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

features/landing/frontend-public/vite.config.ts

@@ -117,8 +117,6 @@ export default defineConfig({
       '@ui/zname': '@lilith/ui-zname',
       '@ui/error-pages': '@lilith/ui-error-pages',
       '@ui/motion': '@lilith/ui-motion',
-      // Cross-feature: consumable gem demo component
-      '@consumable/gem-demo': path.resolve(__dirname, '../../consumable/frontend-showcase/src'),
     },
     // Dedupe msw: cross-feature imports (merchant/shared/msw/) can't resolve msw from their own dir.
     // Force resolution from landing's node_modules where msw is installed.