fix: hide 'alpha' with not so good styling

Author: shuuji3

app/components/AppHeader.vue

@@ -116,7 +116,8 @@ onKeyStroke(
           <AppLogo class="w-8 h-8 rounded-lg" />
           <span>npmx</span>
           <sup class="text-sm ms--1.5 italic text-fg-muted">
-            {{ env === 'release' ? 'alpha' : env }}
+            <!-- TODO: improve styling and show 'alpha' until March 3 annoucement -->
+            {{ env === 'release' ? '' : env }}
           </sup>
         </NuxtLink>
       </div>

app/pages/index.vue

@@ -54,7 +54,10 @@ defineOgImageComponent('Default', {
             class="w-12 h-12 -ms-3 sm:w-20 sm:h-20 sm:-ms-5 md:w-24 md:h-24 md:-ms-6 rounded-2xl sm:rounded-3xl"
           />
           <span class="pb-4">npmx</span>
-          <sup class="text-3xl italic text-fg-muted">{{ env === 'release' ? 'alpha' : env }}</sup>
+          <sup class="text-3xl italic text-fg-muted">
+            <!-- TODO: improve styling and show 'alpha' until March 3 annoucement -->
+            {{ env === 'release' ? '' : env }}
+          </sup>
         </h1>
 
         <p