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

app/[locale]/blog/[slug]/page.tsx

@@ -134,11 +134,14 @@ export default async function BlogPost({ params }: BlogPostProps) {
                 </Heading>
                 <div className="flex flex-wrap items-center gap-6 text-white/80 text-sm md:text-base font-medium">
                   <time dateTime={post.frontmatter.date} suppressHydrationWarning>
-                    {new Date(post.frontmatter.date).toLocaleDateString(locale || 'de', {
-                      year: 'numeric',
-                      month: 'long',
-                      day: 'numeric',
-                    })}
+                    {new Date(post.frontmatter.date).toLocaleDateString(
+                      locale === 'en' ? 'en-US' : 'de-DE',
+                      {
+                        year: 'numeric',
+                        month: 'long',
+                        day: 'numeric',
+                      },
+                    )}
                   </time>
                   <span className="w-1 h-1 bg-white/30 rounded-full" />
                   <span>{getReadingTime(rawTextContent)} min read</span>
@@ -171,11 +174,14 @@ export default async function BlogPost({ params }: BlogPostProps) {
             </Heading>
             <div className="flex items-center gap-6 text-text-primary/80 font-medium">
               <time dateTime={post.frontmatter.date} suppressHydrationWarning>
-                {new Date(post.frontmatter.date).toLocaleDateString(locale || 'de', {
-                  year: 'numeric',
-                  month: 'long',
-                  day: 'numeric',
-                })}
+                {new Date(post.frontmatter.date).toLocaleDateString(
+                  locale === 'en' ? 'en-US' : 'de-DE',
+                  {
+                    year: 'numeric',
+                    month: 'long',
+                    day: 'numeric',
+                  },
+                )}
               </time>
               <span className="w-1 h-1 bg-neutral-400 rounded-full" />
               <span>{getReadingTime(rawTextContent)} min read</span>

app/[locale]/blog/page.tsx

@@ -198,11 +198,14 @@ export default async function BlogIndex({ params }: BlogIndexProps) {
 
                       <div className="flex items-center gap-3 text-xs md:text-sm font-bold text-white/80 mb-3 tracking-widest uppercase">
                         <time dateTime={post.frontmatter.date} suppressHydrationWarning>
-                          {new Date(post.frontmatter.date).toLocaleDateString(locale || 'de', {
-                            year: 'numeric',
-                            month: 'long',
-                            day: 'numeric',
-                          })}
+                          {new Date(post.frontmatter.date).toLocaleDateString(
+                            locale === 'en' ? 'en-US' : 'de-DE',
+                            {
+                              year: 'numeric',
+                              month: 'long',
+                              day: 'numeric',
+                            },
+                          )}
                         </time>
                       </div>
 

app/stats/api/send/route.ts

@@ -24,14 +24,34 @@ export async function POST(request: NextRequest) {
       return NextResponse.json({ status: 'ignored_in_dev' }, { status: 200 });
     }
 
-    const body = await request.json();
+    let body;
+    try {
+      body = await request.json();
+    } catch (parseError) {
+      logger.warn('Received malformed or empty JSON in analytics proxy');
+      return NextResponse.json({ status: 'ignored_bad_payload' }, { status: 200 });
+    }
+
+    if (!body || typeof body !== 'object') {
+      logger.warn('Received invalid body type in analytics proxy', { type: typeof body });
+      return NextResponse.json({ status: 'ignored_invalid_body' }, { status: 200 });
+    }
+
     const { type, payload } = body;
 
+    if (!type || !payload) {
+      logger.warn('Received incomplete analytics payload', { 
+        hasType: !!type, 
+        hasPayload: !!payload 
+      });
+      return NextResponse.json({ status: 'ignored_incomplete_payload' }, { status: 200 });
+    }
+
     // Inject the secret websiteId from server config
     const websiteId = config.analytics.umami.websiteId;
     if (!websiteId) {
       logger.warn('Umami tracking received but no Website ID configured on server');
-      return NextResponse.json({ status: 'ignored' }, { status: 200 });
+      return NextResponse.json({ status: 'ignored_no_config' }, { status: 200 });
     }
 
     // Prepare the enhanced payload with the secret ID