chore: stabilize pipeline and harden infrastructure

- Harden E2E smoke tests with increased timeouts and German keyword detection
- Implement defensive body parsing in analytics relay to prevent crashes
- Refine middleware to bypass i18n logic for Server Actions
- Fix date formatting consistency and JsonLd validation

components/home/RecentPosts.tsx

@@ -74,11 +74,14 @@ export default async function RecentPosts({ locale, data }: RecentPostsProps) {
                       suppressHydrationWarning
                       className="px-3 py-1 text-white/80 text-[10px] md:text-xs font-bold uppercase tracking-widest border border-white/20 rounded-full bg-white/10 backdrop-blur-md"
                     >
-                      {new Date(post.frontmatter.date).toLocaleDateString(locale || 'de', {
-                        year: 'numeric',
-                        month: 'short',
-                        day: 'numeric',
-                      })}
+                      {new Date(post.frontmatter.date).toLocaleDateString(
+                        locale === 'en' ? 'en-US' : 'de-DE',
+                        {
+                          year: 'numeric',
+                          month: 'short',
+                          day: 'numeric',
+                        },
+                      )}
                     </time>
                     {(new Date(post.frontmatter.date) > new Date() ||
                       post.frontmatter.public === false) && (