docs(layout): drop external-site references from layout comments

Reword the PageShell/PageHero comments to describe the layout intent
without naming the prior host site.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/layout/PageHero.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 // Top-of-page hero, the first block inside PageShell's panel. Centered to
-// match the Wix layout; falls back to a left-aligned two-column grid when an
+// match the site layout; falls back to a left-aligned two-column grid when an
 // `aside` slot (e.g. a hero image) is supplied. Title uses the Aboreto
 // display face in the home page's uppercase / wide-tracking idiom.
 import { useSlots } from 'vue'

src/components/layout/PageShell.vue

@@ -2,7 +2,7 @@
 // The floating content panel: a near-black rounded card that sits on the
 // tiled celtic-knot page background, leaving a gutter of tile visible around
 // it. Wrap every secondary page's content in this so they share the home
-// page / Wix layout language. Sections go inside as plain blocks.
+// page's layout language. Sections go inside as plain blocks.
 </script>
 
 <template>