privat/CV/andreknie.de/index.html

@@ -4,8 +4,16 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/png" href="/logos/favicon.png" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Dr. André Knie — KI, Transformation & Leadership</title>
+    <title>Dr. André Knie – Digitale Souveränität und KI</title>
-    <meta name="description" content="Nüchterne KI-Expertise für Mittelstand, Verwaltung und Hochschulen. Souverän, praktisch, evidenzbasiert." />
+    <meta name="description" content="Dr. André Knie unterstützt Organisationen dabei, digitale Souveränität zu erlangen und sicher von KI zu profitieren." />
+    <link rel="canonical" href="https://andreknie.de/" />
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://andreknie.de/" />
+    <meta property="og:title" content="Dr. André Knie – Digitale Souveränität und KI" />
+    <meta property="og:description" content="Dr. André Knie unterstützt Organisationen dabei, digitale Souveränität zu erlangen und sicher von KI zu profitieren." />
+    <meta property="og:image" content="https://andreknie.de/images/andre-knie.webp" />
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:image" content="https://andreknie.de/images/andre-knie.webp" />
     <!-- Umami Analytics -->
     <script
       defer

privat/CV/andreknie.de/plugins/vite-plugin-content.js

@@ -25,7 +25,7 @@ function readContentDir(subdir) {
         return {
           ...data,
           slug,
-          body: marked(content),
+          body: renderMarkdownContent(content),
           _source: `${subdir}/${filename}`
         }
       }
@@ -41,6 +41,18 @@ function readContentDir(subdir) {
     .filter(Boolean)
 }
 
+export function renderMarkdownContent(content) {
+  const tokens = marked.lexer(content)
+  const firstContentToken = tokens.findIndex(token => token.type !== 'space')
+  const firstToken = tokens[firstContentToken]
+
+  if (firstToken?.type === 'heading' && firstToken.depth === 1) {
+    tokens.splice(firstContentToken, 1)
+  }
+
+  return marked.parser(tokens)
+}
+
 function readMetaFile(filename) {
   const filepath = join(CONTENT_DIR, 'meta', filename)
   if (!existsSync(filepath)) return null

privat/CV/andreknie.de/plugins/vite-plugin-content.test.js

@@ -0,0 +1,19 @@
+import { describe, expect, it } from 'vitest'
+import { renderMarkdownContent } from './vite-plugin-content.js'
+
+describe('markdown content rendering', () => {
+  it('removes only an initial level-one heading', () => {
+    const html = renderMarkdownContent('# Duplicate title\n\nIntro\n\n## Section')
+
+    expect(html).not.toContain('<h1>Duplicate title</h1>')
+    expect(html).toContain('<p>Intro</p>')
+    expect(html).toContain('<h2>Section</h2>')
+  })
+
+  it('keeps content when no initial level-one heading exists', () => {
+    const html = renderMarkdownContent('Intro\n\n# Deliberate heading')
+
+    expect(html).toContain('<p>Intro</p>')
+    expect(html).toContain('<h1>Deliberate heading</h1>')
+  })
+})

privat/CV/andreknie.de/src/components/SEOHead.jsx

@@ -1,33 +1,32 @@
 import React from 'react'
 import { Helmet } from 'react-helmet-async'
+import { absoluteUrl, BRAND_SUFFIX, DEFAULT_DESCRIPTION, DEFAULT_IMAGE, DEFAULT_TITLE, normalizeTitle } from './seo.js'
 
-export default function SEOHead({ title, description, url, image, type = 'website' }) {
+export default function SEOHead({ title, description, url, image, type = 'website', noindex = false }) {
-  const defaultTitle = "Dr. André Knie - Experte für Digitale Souveränität"
+  const pageTitle = normalizeTitle(title)
-  const defaultDescription = "Dr. André Knie unterstützt Organisationen dabei, digitale Souveränität zu erlangen und sicher von KI zu profitieren."
+  const siteTitle = pageTitle === DEFAULT_TITLE ? pageTitle : `${pageTitle}${BRAND_SUFFIX}`
-  
+  const siteDescription = description || DEFAULT_DESCRIPTION
-  const siteTitle = title ? `${title} | Dr. André Knie` : defaultTitle
+  const canonicalUrl = absoluteUrl(url || '/', '/')
-  const siteDesc = description || defaultDescription
+  const imageUrl = absoluteUrl(image, DEFAULT_IMAGE)
-  const siteUrl = url ? `https://andreknie.de${url}` : "https://andreknie.de"
-  const siteImage = image || "https://andreknie.de/images/og-image.webp"
 
   return (
     <Helmet>
       <title>{siteTitle}</title>
-      <meta name="description" content={siteDesc} />
+      <meta name="description" content={siteDescription} />
-      
+      <link rel="canonical" href={canonicalUrl} />
-      {/* Open Graph / Facebook */}
+      {noindex && <meta name="robots" content="noindex,follow" />}
-      <meta property="og:type" content={type} />
-      <meta property="og:url" content={siteUrl} />
-      <meta property="og:title" content={siteTitle} />
-      <meta property="og:description" content={siteDesc} />
-      <meta property="og:image" content={siteImage} />
 
-      {/* Twitter */}
+      <meta property="og:type" content={type} />
-      <meta property="twitter:card" content="summary_large_image" />
+      <meta property="og:url" content={canonicalUrl} />
-      <meta property="twitter:url" content={siteUrl} />
+      <meta property="og:title" content={siteTitle} />
-      <meta property="twitter:title" content={siteTitle} />
+      <meta property="og:description" content={siteDescription} />
-      <meta property="twitter:description" content={siteDesc} />
+      <meta property="og:image" content={imageUrl} />
-      <meta property="twitter:image" content={siteImage} />
+
+      <meta name="twitter:card" content="summary_large_image" />
+      <meta name="twitter:url" content={canonicalUrl} />
+      <meta name="twitter:title" content={siteTitle} />
+      <meta name="twitter:description" content={siteDescription} />
+      <meta name="twitter:image" content={imageUrl} />
     </Helmet>
   )
 }

privat/CV/andreknie.de/src/components/SEOHead.test.jsx

@@ -0,0 +1,43 @@
+import React from 'react'
+import { afterEach, describe, expect, it } from 'vitest'
+import { render, cleanup } from '@testing-library/react'
+import { HelmetProvider } from 'react-helmet-async'
+import SEOHead from './SEOHead'
+import { BRAND_SUFFIX } from './seo.js'
+
+afterEach(() => {
+  cleanup()
+  document.head.querySelectorAll('[data-rh="true"]').forEach(node => node.remove())
+})
+
+describe('SEOHead', () => {
+  it('renders one branded title, description, and canonical link', () => {
+    render(
+      <HelmetProvider>
+        <SEOHead title={`Artikel${BRAND_SUFFIX}`} description="Synthetic description" url="/artikel" />
+      </HelmetProvider>,
+    )
+
+    expect(document.head.querySelectorAll('title')).toHaveLength(1)
+    expect(document.title).toBe(`Artikel${BRAND_SUFFIX}`)
+    expect(document.title.match(/Dr\. André Knie/g)).toHaveLength(1)
+    expect(document.head.querySelectorAll('meta[name="description"]')).toHaveLength(1)
+    expect(document.head.querySelector('link[rel="canonical"]')?.getAttribute('href')).toBe('https://andreknie.de/artikel')
+  })
+
+  it('normalizes relative and absolute image URLs', () => {
+    const { rerender } = render(
+      <HelmetProvider>
+        <SEOHead title="Test" image="/images/andre-knie.webp" />
+      </HelmetProvider>,
+    )
+
+    expect(document.head.querySelector('meta[property="og:image"]')?.getAttribute('content')).toBe('https://andreknie.de/images/andre-knie.webp')
+    rerender(
+      <HelmetProvider>
+        <SEOHead title="Test" image="https://cdn.example.invalid/image.webp" />
+      </HelmetProvider>,
+    )
+    expect(document.head.querySelector('meta[property="og:image"]')?.getAttribute('content')).toBe('https://cdn.example.invalid/image.webp')
+  })
+})

privat/CV/andreknie.de/src/components/seo.js

@@ -0,0 +1,16 @@
+export const SITE_URL = 'https://andreknie.de'
+export const BRAND_SUFFIX = ' | Dr. André Knie'
+export const DEFAULT_TITLE = 'Dr. André Knie – Digitale Souveränität und KI'
+export const DEFAULT_DESCRIPTION = 'Dr. André Knie unterstützt Organisationen dabei, digitale Souveränität zu erlangen und sicher von KI zu profitieren.'
+export const DEFAULT_IMAGE = '/images/andre-knie.webp'
+
+export function absoluteUrl(value, fallback) {
+  const candidate = value || fallback
+  if (/^https?:\/\//i.test(candidate)) return candidate
+  return new URL(candidate.startsWith('/') ? candidate : `/${candidate}`, SITE_URL).href
+}
+
+export function normalizeTitle(title) {
+  if (!title) return DEFAULT_TITLE
+  return title.endsWith(BRAND_SUFFIX) ? title.slice(0, -BRAND_SUFFIX.length) : title
+}

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

@@ -2,6 +2,7 @@ import React from 'react'
 import { useMeta } from '../hooks/useContent'
 import { ExternalLink, Globe } from 'lucide-react'
 import SpeakerCvRequest from '../components/SpeakerCvRequest'
+import SEOHead from '../components/SEOHead'
 
 export default function About() {
   const { profile, about } = useMeta()
@@ -12,6 +13,7 @@ export default function About() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Über mich" description="Über Dr. André Knie, seine Arbeit, Stationen und Perspektive auf KI und digitale Souveränität." url="/ueber-mich" />
       <div className="app-container" style={{ maxWidth: '800px' }}>
         <div className="section-header">
           <h1 className="section-title">Über <span className="text-gradient">mich</span></h1>

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

@@ -11,10 +11,10 @@ export default function ArticleSingle() {
 
   if (!post) {
     return (
-      <div className="page-container app-container" style={{ textAlign: 'center', paddingTop: '150px' }}>
+      <main className="page-container app-container" style={{ textAlign: 'center', paddingTop: '150px' }}>
         <h2>Artikel nicht gefunden</h2>
         <Link to="/artikel" className="primary-button" style={{ marginTop: '20px' }}>Zurück zur Übersicht</Link>
-      </div>
+      </main>
     )
   }
 
@@ -23,8 +23,10 @@ export default function ArticleSingle() {
     : ''
 
   return (
-    <div className="page-container article-single-page">
+    <main className="page-container article-single-page">
-      <SEOHead 
+      <SEOHead
+        url={`/artikel/${post.slug}`}
+        type="article"
         title={`${post.title} | Dr. André Knie`} 
         description={post.excerpt || post.title}
       />
@@ -48,6 +50,6 @@ export default function ArticleSingle() {
           />
         </article>
       </div>
-    </div>
+    </main>
   )
 }

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

@@ -20,8 +20,9 @@ export default function Articles() {
   })
 
   return (
-    <div className="page-container articles-page">
+    <main className="page-container articles-page">
-      <SEOHead 
+      <SEOHead
+        url="/artikel"
         title="Artikel & Beiträge | Dr. André Knie" 
         description="Aktuelle Artikel und LinkedIn-Beiträge zu den Themen Softwareentwicklung, Leadership und Technologie."
       />
@@ -102,6 +103,6 @@ export default function Articles() {
           <p className="no-articles">Keine Artikel für diese Suche gefunden.</p>
         )}
       </section>
-    </div>
+    </main>
   )
 }

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

@@ -13,6 +13,8 @@ export default function Confirmation() {
       <SEOHead 
         title={isSuccess ? "Vielen Dank" : "Ein Fehler ist aufgetreten"} 
         description={isSuccess ? "Ihre Nachricht wurde erfolgreich gesendet." : "Es gab ein Problem beim Senden Ihrer Nachricht."}
+        url="/bestaetigung"
+        noindex
       />
       <main style={{ paddingTop: '120px', minHeight: '100vh', display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
         <div className="app-container" style={{ textAlign: 'center', maxWidth: '600px' }}>

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

@@ -1,6 +1,7 @@
 import React from 'react'
 import { useContent, useMeta } from '../hooks/useContent'
 import ServiceAccordion from '../components/ServiceAccordion'
+import SEOHead from '../components/SEOHead'
 
 export default function Consulting() {
   const { items } = useContent('consulting', { pageSize: 10 })
@@ -8,6 +9,7 @@ export default function Consulting() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Beratung" description="Beratung zu KI-Strategie, digitaler Souveränität und praktischer Transformation." url="/consulting" />
       <div className="app-container">
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Leistungen</span></h1>

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

@@ -1,6 +1,7 @@
 import React, { useState } from 'react'
 import { useFormSubmit } from '../hooks/useFormSubmit'
 import { validateContact } from '../utils/validation'
+import SEOHead from '../components/SEOHead'
 
 export default function Contact() {
   const [form, setForm] = useState({ name: '', email: '', message: '', company_website: '' })
@@ -18,6 +19,7 @@ export default function Contact() {
   if (success) {
     return (
       <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+        <SEOHead title="Kontakt" description="Nimm Kontakt zu Dr. André Knie auf." url="/kontakt" />
         <div className="app-container" style={{ textAlign: 'center', maxWidth: '600px' }}>
           <h1 style={{ marginBottom: '16px' }}>Nachricht gesendet</h1>
           <p style={{ color: 'var(--text-secondary)' }}>Du erhältst eine Bestätigungs-E-Mail. Bitte klicke den Link darin, damit deine Nachricht weitergeleitet wird.</p>
@@ -28,6 +30,7 @@ export default function Contact() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Kontakt" description="Nimm Kontakt zu Dr. André Knie auf." url="/kontakt" />
       <div className="app-container" style={{ maxWidth: '600px' }}>
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Kontakt</span></h1>

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

@@ -1,8 +1,10 @@
 import React from 'react'
+import SEOHead from '../components/SEOHead'
 
 export default function Datenschutz() {
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Datenschutz" description="Datenschutzerklärung von andreknie.de." url="/datenschutz" />
       <div className="app-container" style={{ maxWidth: '700px' }}>
         <h1 style={{ marginBottom: '32px' }}>Datenschutzerklärung</h1>
         <div style={{ color: 'var(--text-secondary)', lineHeight: 1.8 }}>

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

@@ -6,6 +6,7 @@ import UpcomingEvents from '../components/UpcomingEvents'
 import StatsCube from '../components/StatsCube'
 import DotCloudIcon from '../components/DotCloudIcon'
 import PhotoBand from '../components/PhotoBand'
+import SEOHead from '../components/SEOHead'
 import './Home.css'
 
 const PHOTO_BAND_IMAGES = [
@@ -21,6 +22,7 @@ export default function Home() {
 
   return (
     <main>
+      <SEOHead url="/" />
       {/* Hero */}
       <section className="hero">
         <div className="app-container hero-content">

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

@@ -1,8 +1,10 @@
 import React from 'react'
+import SEOHead from '../components/SEOHead'
 
 export default function Impressum() {
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Impressum" description="Impressum von andreknie.de." url="/impressum" />
       <div className="app-container" style={{ maxWidth: '700px' }}>
         <h1 style={{ marginBottom: '32px' }}>Impressum</h1>
         <div style={{ color: 'var(--text-secondary)', lineHeight: 1.8 }}>

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

@@ -4,6 +4,7 @@ import { Search } from 'lucide-react'
 import { useContent } from '../hooks/useContent'
 import { formatDate } from '../utils/formatDate'
 import { decodeHtml } from '../utils/decodeHtml'
+import SEOHead from '../components/SEOHead'
 
 export default function Kniepunkt() {
   const [searchQuery, setSearchQuery] = useState('')
@@ -21,6 +22,7 @@ export default function Kniepunkt() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Kniepunkt" description="Die Kniepunkt-Kolumne von Dr. André Knie über KI, Technologie und die Absurditäten des digitalen Wandels." url="/kniepunkt" />
       <div className="app-container">
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Kniepunkt</span></h1>

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

@@ -2,6 +2,7 @@ import React from 'react'
 import { useParams, Link } from 'react-router-dom'
 import { useContentItem } from '../hooks/useContent'
 import { formatDate } from '../utils/formatDate'
+import SEOHead from '../components/SEOHead'
 
 export default function KniepunktIssue() {
   const { slug } = useParams()
@@ -10,6 +11,7 @@ export default function KniepunktIssue() {
   if (!issue) {
     return (
       <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+        <SEOHead title="Kniepunkt-Ausgabe nicht gefunden" description="Die angeforderte Kniepunkt-Ausgabe wurde nicht gefunden." noindex url={`/kniepunkt/${slug}`} />
         <div className="app-container" style={{ textAlign: 'center' }}>
           <h1>Ausgabe nicht gefunden</h1>
           <p style={{ color: 'var(--text-secondary)' }}>Diese Kniepunkt-Ausgabe existiert nicht.</p>
@@ -21,6 +23,7 @@ export default function KniepunktIssue() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title={issue.title} description={issue.summary || issue.title} url={`/kniepunkt/${issue.slug}`} type="article" image={issue.image} />
       <div className="app-container" style={{ maxWidth: '700px' }}>
         <Link to="/kniepunkt" style={{ color: 'var(--text-secondary)', fontSize: '0.9rem', marginBottom: '24px', display: 'inline-block' }}>&larr; Alle Ausgaben</Link>
         <h1 style={{ marginBottom: '12px' }}>{issue.title}</h1>

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

@@ -1,9 +1,11 @@
 import React from 'react'
 import { Link } from 'react-router-dom'
+import SEOHead from '../components/SEOHead'
 
 export default function NotFound() {
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh', display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
+      <SEOHead title="Seite nicht gefunden" description="Die angeforderte Seite wurde nicht gefunden." noindex url="/404" />
       <div className="app-container" style={{ textAlign: 'center' }}>
         <h1 style={{ fontSize: '6rem', marginBottom: '16px' }}><span className="text-gradient">404</span></h1>
         <p style={{ color: 'var(--text-secondary)', fontSize: '1.2rem', marginBottom: '32px' }}>Diese Seite existiert nicht.</p>

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

@@ -2,6 +2,7 @@ import React from 'react'
 import { useContent } from '../hooks/useContent'
 import { formatDate } from '../utils/formatDate'
 import { ExternalLink } from 'lucide-react'
+import SEOHead from '../components/SEOHead'
 
 export default function Podcast() {
   const { items: allEpisodes } = useContent('podcast', { visibility: 'all', pageSize: 100 })
@@ -13,6 +14,7 @@ export default function Podcast() {
 
   return (
     <main style={{ paddingTop: '120px', minHeight: '100vh' }}>
+      <SEOHead title="Podcast" description="Podcasts, Gastauftritte und Gespräche von und mit Dr. André Knie über KI, Transformation und Leadership." url="/podcast" />
       <div className="app-container" style={{ maxWidth: '800px', margin: '0 auto' }}>
         <div className="section-header">
           <h1 className="section-title"><span className="text-gradient">Podcast</span></h1>

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>

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>