fix(andreknie.de): normalize SEO metadata and document structure

privat/CV/andreknie.de/src/pages/Resources.jsx

@@ -2,6 +2,7 @@ import React, { useState } from 'react'
 import { useContent } from '../hooks/useContent'
 import { useFormSubmit } from '../hooks/useFormSubmit'
 import { validateResourceDownload } from '../utils/validation'
+import SEOHead from '../components/SEOHead'
 
 const inputStyle = {
   width: '100%',
@@ -80,6 +81,7 @@ export default function Resources() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Ressourcen" description="Ausgewählte Materialien und Profile von Dr. André Knie auf Anfrage." url="/resources" />
       <div className="app-container">
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Ressourcen</span></h1>