feat(landing): 230px fullbody roster, features goat column, trimmed header

- Members roster avatars render 230px tall (full body); NMSR size bumped to 256
  and tiles widened to fit the portrait.
- Features section is now two columns: the 4 feature cards stacked on the left, a
  Minecraft goat image on the right (public/Goat_JE1_BE1.webp). Stacks on narrow
  screens.
- Header nav links trimmed to How to Join + Status; the auth CTA cluster is now
  Register / Account / Play (the old "Log in" button relabeled Account →
  Cuenta/Kontua).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

landing/src/pages/[...lang].astro

@@ -75,9 +75,6 @@ const dustBits = Array.from({ length: 16 }, (_, i) => {
         <nav class="nav-links">
           <a href="#join">{t.nav.join}</a>
           <a href="#status">{t.nav.status}</a>
-          <a href="#members">{t.nav.members}</a>
-          <a href="#mods">{t.nav.mods}</a>
-          <a href="#features">{t.nav.features}</a>
         </nav>
         <span class="nav-spacer"></span>
         <div class="lang-switch" aria-label="Language">
@@ -238,16 +235,21 @@ const dustBits = Array.from({ length: 16 }, (_, i) => {
             <h2 class="section-title">{t.features.title}</h2>
             <p class="lead">{t.features.lead}</p>
           </div>
-          <div class="feat-grid">
-            {site.features.map((f, i) => (
-              <div class="feat reveal" style={`transition-delay:${(i % 2) * 80}ms`}>
-                <PixelIcon glyph={f.glyph} gold={f.gold} />
-                <div>
-                  <h3>{t.features.items[i].h}</h3>
-                  <p>{t.features.items[i].p}</p>
+          <div class="feat-split">
+            <div class="feat-grid">
+              {site.features.map((f, i) => (
+                <div class="feat reveal" style={`transition-delay:${(i % 2) * 80}ms`}>
+                  <PixelIcon glyph={f.glyph} gold={f.gold} />
+                  <div>
+                    <h3>{t.features.items[i].h}</h3>
+                    <p>{t.features.items[i].p}</p>
+                  </div>
                 </div>
-              </div>
-            ))}
+              ))}
+            </div>
+            <div class="feat-aside reveal">
+              <img src="/Goat_JE1_BE1.webp" alt="" width="1200" height="1200" loading="lazy" />
+            </div>
           </div>
         </div>
       </section>