Remove category tabs bar from header

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

layouts/partials/header.html

@@ -1,7 +1,3 @@
-{{- $cats := slice }}
-{{- range $.Site.Taxonomies.categories }}
-  {{- $cats = $cats | append .Page.Title }}
-{{- end }}
 <header id="masthead"
   class="sticky top-0 z-50 border-b border-[var(--rule)]
          backdrop-blur-[14px] saturate-[1.05]
@@ -59,17 +55,4 @@
     <div id="searchpop" class="searchpop"></div>
   </div>
 
-  {{/* ── category tabs ── */}}
-  <div id="tabs" class="tabs flex gap-1 overflow-x-auto px-[var(--pad)] py-[10px] border-b border-[var(--rule-2)] bg-[var(--paper)] [scrollbar-width:none] [&::-webkit-scrollbar]:hidden">
-    <button data-cat="All" aria-pressed="true"
-            class="shrink-0 px-[14px] py-2 rounded-full border border-transparent
-                   font-sans font-medium text-[11px] leading-none tracking-[.14em] uppercase
-                   text-ink-soft transition-[color,border-color,background] duration-200 hover:text-ink">All</button>
-    {{- range $cats }}
-    <button data-cat="{{ . }}" aria-pressed="false"
-            class="shrink-0 px-[14px] py-2 rounded-full border border-transparent
-                   font-sans font-medium text-[11px] leading-none tracking-[.14em] uppercase
-                   text-ink-soft transition-[color,border-color,background] duration-200 hover:text-ink">{{ . }}</button>
-    {{- end }}
-  </div>
 </header>