feat: optimize performance and SEO, integrate Lighthouse CI

- Integrated imgproxy for centralized image optimization
- Implemented Lighthouse CI in Gitea pipeline with native Chromium
- Reached 100/100 SEO score by fixing canonicals, hreflang, and link text
- Optimized LCP by forcing Hero component visibility until hydration
- Decoupled analytics into an async shell to reduce TTI

messages/de.json

@@ -58,7 +58,7 @@
     }
   },
   "Navigation": {
-    "home": "Start",
+    "home": "KLZ Cables Startseite",
     "team": "Team",
     "products": "Produkte",
     "blog": "Blog",
@@ -394,4 +394,4 @@
       "cta": "Zurück zur Sicherheit"
     }
   }
-}
+}

messages/en.json

@@ -59,7 +59,7 @@
   },
   "Navigation": {
     "menu": "Menu",
-    "home": "Home",
+    "home": "KLZ Cables Home",
     "team": "Team",
     "products": "Products",
     "blog": "Blog",