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>

types/translations.ts

@@ -20,40 +20,6 @@ export interface FooterTranslations {
   builtWith: string;
 }
 
-export interface AboutTranslations {
-  title: string;
-  p1: string;
-  p2: string;
-  p3: string;
-  funFactTitle: string;
-  funFactBody: string;
-  techStackTitle: string;
-  techStack: {
-    categories: {
-      frontendMobile: string;
-      backendDevops: string;
-      toolsAutomation: string;
-      securityAdmin: string;
-    };
-    items: {
-      selfHostedServices: string;
-    };
-  };
-  hobbiesTitle: string;
-  hobbies: {
-    selfHosting: string;
-    gaming: string;
-    gameServers: string;
-    jogging: string;
-  };
-}
-
-export interface ProjectsTranslations {
-  title: string;
-  subtitle: string;
-  viewAll: string;
-}
-
 export interface ContactTranslations {
   title: string;
   subtitle: string;