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

- 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/fenster/getWindowLabels.ts

@@ -44,6 +44,17 @@ export async function getWindowLabels(locale: string): Promise<WindowLabels> {
         value: t(`about.facts.${k}.value`),
       })),
     },
+    chat: {
+      title: t("chat.title"),
+      welcome: t("chat.welcome"),
+      consent: t("chat.consent"),
+      allow: t("chat.allow"),
+      placeholder: t("chat.placeholder"),
+      send: t("chat.send"),
+      error: t("chat.error"),
+      thinking: t("chat.thinking"),
+      note: t("chat.note"),
+    },
     contact: {
       title: t("contact.title"),
       body: t("contact.body"),