feat: link login/register buttons to app.armarium.ch (v0.8.1)

All hero, CTA, and footer login/register buttons now point to
https://app.armarium.ch/login and https://app.armarium.ch/register.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/landing/HomePage.astro

@@ -41,11 +41,11 @@ const features = [
   <p slot="description">{t('hero.description')}</p>
 
   <Fragment slot="actions">
-    <Button size="lg" href="/register">
+    <Button size="lg" href="https://app.armarium.ch/register">
       {t('hero.register')}
       <Icon name="arrow-right" size="sm" />
     </Button>
-    <Button size="lg" variant="outline" href="#features">
+    <Button size="lg" variant="outline" href="https://app.armarium.ch/login">
       {t('hero.login')}
     </Button>
   </Fragment>
@@ -119,11 +119,11 @@ const features = [
       {t('cta.desc')}
     </p>
     <div class="flex flex-col sm:flex-row gap-4 justify-center">
-      <Button size="lg" href="/register">
+      <Button size="lg" href="https://app.armarium.ch/register">
         {t('cta.register')}
         <Icon name="arrow-right" size="sm" />
       </Button>
-      <Button size="lg" variant="outline" href="/login">
+      <Button size="lg" variant="outline" href="https://app.armarium.ch/login">
         {t('cta.login')}
       </Button>
     </div>