feat(frontend): Abfuellungen und Produkte (Modul 23)

/products, /products/new, /bottling/new, /bottling/:id. Verbindung
von der Honigcharge-Detailseite zur Abfuellung, Nav-Dropdown "Mehr"
fuer alle Rollen mit Produkte/Abfuellungen erweitert.

ApiCore-Frontend/src/app/(app)/layout.tsx

@@ -29,6 +29,11 @@ const PRIMARY_LINKS = [
   { label: "Suche", href: "/search" },
 ];
 
+const MORE_LINKS = [
+  { label: "Produkte", href: "/products" },
+  { label: "Abfüllungen", href: "/bottling/new" },
+];
+
 const ADMIN_LINKS = [
   { label: "Benutzer", href: "/settings/users" },
   { label: "Audit-Log", href: "/settings/audit-log" },
@@ -73,23 +78,28 @@ export default function AppLayout({ children }: { children: ReactNode }) {
             {PRIMARY_LINKS.map((item) => (
               <NavLink key={item.href} {...item} pathname={pathname} />
             ))}
-            {user.role === "ADMIN" ? (
-              <DropdownMenu>
-                <DropdownMenuTrigger
-                  render={<Button variant="ghost" size="sm" className="gap-1 text-muted-foreground" />}
-                >
-                  <MoreHorizontal className="size-4" />
-                  Mehr
-                </DropdownMenuTrigger>
-                <DropdownMenuContent align="start">
-                  {ADMIN_LINKS.map((item) => (
-                    <DropdownMenuItem key={item.href} render={<Link href={item.href} />}>
-                      {item.label}
-                    </DropdownMenuItem>
-                  ))}
-                </DropdownMenuContent>
-              </DropdownMenu>
-            ) : null}
+            <DropdownMenu>
+              <DropdownMenuTrigger
+                render={<Button variant="ghost" size="sm" className="gap-1 text-muted-foreground" />}
+              >
+                <MoreHorizontal className="size-4" />
+                Mehr
+              </DropdownMenuTrigger>
+              <DropdownMenuContent align="start">
+                {MORE_LINKS.map((item) => (
+                  <DropdownMenuItem key={item.href} render={<Link href={item.href} />}>
+                    {item.label}
+                  </DropdownMenuItem>
+                ))}
+                {user.role === "ADMIN"
+                  ? ADMIN_LINKS.map((item) => (
+                      <DropdownMenuItem key={item.href} render={<Link href={item.href} />}>
+                        {item.label}
+                      </DropdownMenuItem>
+                    ))
+                  : null}
+              </DropdownMenuContent>
+            </DropdownMenu>
           </div>
         </nav>
         <div className="flex shrink-0 items-center gap-3 text-sm">