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

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

@@ -1,6 +1,7 @@
 import React from 'react'
 import { useContent, useMeta } from '../hooks/useContent'
 import SpeakingAccordion from '../components/SpeakingAccordion'
+import SEOHead from '../components/SEOHead'
 
 export default function Speaking() {
   const { items: allTalks } = useContent('talks', { visibility: 'all', pageSize: 100 })
@@ -9,6 +10,7 @@ export default function Speaking() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Speaking" description="Keynotes, Workshops und Panels von Dr. André Knie zu KI, Transformation und Leadership." url="/speaking" />
       <div className="app-container">
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Speaking</span></h1>