feat: implement high-priority SEO fixes and German localization

src/app/(marketing)/tools/layout.tsx

@@ -0,0 +1,44 @@
+'use client';
+
+import React from 'react';
+import AdBanner from '@/components/ads/AdBanner';
+
+export default function ToolsLayout({
+    children,
+}: {
+    children: React.ReactNode;
+}) {
+    return (
+        <div className="flex flex-col min-h-screen">
+            <div className="flex-grow relative">
+                {children}
+
+                {/* Desktop Sidebar Ad - High Resolution Only */}
+                {/* Positioned absolute to the right, only visible on very wide screens (2xl) */}
+                <div className="hidden 2xl:block absolute right-4 top-32 w-[160px] z-10">
+                    <div className="sticky top-24">
+                        <div className="text-center text-[10px] text-slate-300 mb-1">AD</div>
+                        <AdBanner
+                            dataAdSlot="sidebar-slot-id"
+                            dataAdFormat="vertical"
+                            className="min-h-[600px] w-[160px]"
+                        />
+                    </div>
+                </div>
+            </div>
+
+            {/* Footer Ad Placement - Appears on ALL tool pages */}
+            <div className="container mx-auto px-4 sm:px-6 lg:px-8 max-w-7xl pb-8">
+                <div className="mx-auto max-w-4xl text-center text-xs text-slate-400 mb-2">
+                    Sponsored
+                </div>
+                <AdBanner
+                    dataAdSlot="1234567890" // Placeholder
+                    dataAdFormat="auto"
+                    fullWidthResponsive={true}
+                    className="bg-slate-50 rounded-xl p-4 border border-slate-100 min-h-[100px]"
+                />
+            </div>
+        </div>
+    );
+}