Fix cart-badge false pulse, blog hero-card misattribution, legal breadcrumb color

- Cart badge pulsed on every page load/reload, not just real cart
  changes — useCartCount's SSR snapshot is always 0, so hydration alone
  satisfied the "count increased" check. Skip the very first effect run.
- WishlistButton: touch-device smaller/subtler sizing now applies
  regardless of revealOnHover (e.g. the homepage spotlight heart), not
  just the shop grid's hover-reveal mode.
- /blog: the big featured-style hero card was applied to whatever post
  sorted first post-filter, even when that post isn't actually the
  `featured` one (a category filter can exclude the real featured post
  entirely). Now gated on the post's own `featured` flag.
- Legal pages' "Startseite" breadcrumb link now matches the same
  text-brand/hover:underline treatment already used elsewhere on these
  pages (e.g. Impressum's Anbieter email link), instead of staying muted
  until hover.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018unaXmuzVA8ct1b6WoyP1U

app/blog/page.tsx

@@ -47,7 +47,16 @@ export default async function BlogOverviewPage({
   const allCategories = blogFilterEnabled ? distinctCategories(allPosts) : [];
   const posts =
     activeCategories.length === 0 ? allPosts : allPosts.filter((post) => post.categories.some((c) => activeCategories.includes(c)));
-  const [featured, ...rest] = posts;
+  // getBlogPosts sorts "-featured,-publishedAt", so index 0 IS the actual
+  // featured post when the unfiltered list is shown — but a category
+  // filter can (and often will) exclude it entirely, in which case index 0
+  // is just the newest matching post, not an editorially featured one. It
+  // still doesn't deserve the big hero-card treatment (implies "the
+  // featured post", not "whatever sorted first"), so that layout is gated
+  // on the post's own `featured` flag, not on array position.
+  const [first, ...restAll] = posts;
+  const featured = first?.featured ? first : undefined;
+  const rest = featured ? restAll : posts;
 
   return (
     <>