feat: simplify homepage to single hero, show all other posts in latest grid

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

layouts/index.html

@@ -1,9 +1,8 @@
 {{- define "main" -}}
-{{- $posts     := where .Site.RegularPages "Section" "posts" -}}
-{{- $featured  := where $posts "Params.featured" true -}}
-{{- $hero      := index $featured 0 -}}
-{{- $secondary := after 1 $featured | first 3 -}}
-{{- $latest    := complement $featured $posts -}}
+{{- $posts    := where .Site.RegularPages "Section" "posts" -}}
+{{- $featured := where $posts "Params.featured" true -}}
+{{- $hero     := index $featured 0 -}}
+{{- $latest   := where $posts "Permalink" "ne" $hero.Permalink -}}
 
 <!-- ── HERO ──────────────────────────────────────────────────── -->
 {{- with $hero -}}
@@ -91,21 +90,6 @@
 </section>
 {{- end -}}
 
-<!-- ── SECONDARY FEATURED ────────────────────────────────────── -->
-{{- with $secondary -}}
-<section class="gutter-x py-14 md:py-20">
-  <div class="flex items-center gap-5 mb-8">
-    <span class="badge badge-pulse">Also Featured</span>
-    <div class="flex-1 gradient-line"></div>
-  </div>
-  <div class="grid grid-cols-1 md:grid-cols-3 gap-5">
-    {{- range . -}}
-    {{- partial "post-card-large.html" . -}}
-    {{- end -}}
-  </div>
-</section>
-{{- end -}}
-
 <div class="gradient-line" style="opacity:0.2"></div>
 
 <!-- ── LATEST POSTS ──────────────────────────────────────────── -->