feat: plakat redesign phase 4 (chat window, contact, footer, cleanup) (#77)

- AI chat moves into a window/sheet, opened from a new speech-bubble card on
  the desk; it now respects the chatbot consent and asks before sending
  anything to n8n (previously it ignored the consent)
- Contact as red poster section with big mail address and the form on a paper
  card; validation errors are finally shown inline (aria-invalid, role=alert)
- Footer as ink strip with dk0 wordmark, legal links and a button to reopen
  the privacy settings
- "About me" in the header opens the about window on the home page
- Remove the old About section and its parts (BentoChat, ActivityFeed,
  CurrentlyReading, ReadBooks), the unused ChatWidget, Projects and BentoGrid,
  their tests, wrappers, loaders, types and texts
- scripts/directus-cleanup-redesign.mjs: dry run by default, --apply archives
  hobbies, tech stack categories and old content pages and deletes four
  unused message overrides after a full JSON backup; run only after the
  redesign is live on production

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/components/ClientWrappers.tsx

@@ -10,13 +10,9 @@ import dynamic from 'next/dynamic';
 
 // Lazy-load below-fold components so their JS doesn't block initial paint / LCP.
 // SSR stays on (default) so content is in the initial HTML for SEO.
-const About = dynamic(() => import('./About'));
-const Projects = dynamic(() => import('./Projects'));
 const Contact = dynamic(() => import('./Contact'));
 const Footer = dynamic(() => import('./Footer'));
 import type {
-  AboutTranslations,
-  ProjectsTranslations,
   ContactTranslations,
   FooterTranslations,
 } from '@/types/translations';
@@ -29,41 +25,6 @@ function getNormalizedLocale(locale: string): 'en' | 'de' {
   return locale.startsWith('de') ? 'de' : 'en';
 }
 
-export function AboutClient({ locale }: { locale: string; translations: AboutTranslations }) {
-  const normalLocale = getNormalizedLocale(locale);
-  const baseMessages = messageMap[normalLocale];
-  
-  const messages = {
-    home: {
-      about: baseMessages.home.about
-    },
-    about: baseMessages.about
-  };
-  
-  return (
-    <NextIntlClientProvider locale={locale} messages={messages}>
-      <About />
-    </NextIntlClientProvider>
-  );
-}
-
-export function ProjectsClient({ locale }: { locale: string; translations: ProjectsTranslations }) {
-  const normalLocale = getNormalizedLocale(locale);
-  const baseMessages = messageMap[normalLocale];
-  
-  const messages = {
-    home: {
-      projects: baseMessages.home.projects
-    }
-  };
-  
-  return (
-    <NextIntlClientProvider locale={locale} messages={messages}>
-      <Projects />
-    </NextIntlClientProvider>
-  );
-}
-
 export function ContactClient({ locale }: { locale: string; translations: ContactTranslations }) {
   const normalLocale = getNormalizedLocale(locale);
   const baseMessages = messageMap[normalLocale];