fix: rename AGB to AVB in navigation and components for consistency

app/[locale]/agb/page.tsx

@@ -2,7 +2,7 @@ import { Download } from "lucide-react";
 import fs from "fs";
 import path from "path";
 
-export default function AGB() {
+export default function AVB() {
   const filePath = path.join(process.cwd(), "context/avbs.md");
   const fileContent = fs.readFileSync(filePath, "utf8");
 

components/Layout.tsx

@@ -246,7 +246,7 @@ const Layout = ({ children }: { children: React.ReactNode }) => {
                     href="/agb"
                     className="hover:text-accent transition-colors"
                   >
-                    {t("footer.agb")}
+                    {t("footer.avb")}
                   </Link>
                 </nav>
               </div>

messages/de.json

@@ -81,7 +81,7 @@
       "legal": "Rechtliches",
       "impressum": "Impressum",
       "datenschutz": "Datenschutz",
-      "agb": "AVB",
+      "avb": "AVB",
       "rights": "Alle Rechte vorbehalten.",
       "madeWith": "Entwickelt mit",
       "precision": "Präzision",