feat: plakat redesign phase 2 (desk with throwable objects, mobile card deck) (#75)

- New "Tisch" section replaces the old projects block on the home page
- Objects: project cards from Directus (flip on tap, link to detail page),
  thesis ticket with countdown, server card, currently-reading book from
  Hardcover (with skeleton), polaroid photo, sticker
- Desktop: Framer Motion drag with momentum, elastic table edges, tilt that
  follows throw velocity, bring-to-front, "Tidy up" and "Mess it up"
- Mobile: card deck, swipe the top card away (distance or velocity),
  prev/next buttons, live counter, tap to flip
- Both layouts are server rendered and switched by CSS, so content is
  visible without JavaScript and nothing jumps on hydration
- Taps after a drag no longer flip cards
- New named colors polaroid/bookcover instead of raw hex classes
- Texts in de/en, i18n key check extended

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

app/_ui/HomePageServer.tsx

@@ -1,16 +1,15 @@
 import Header from "../components/Header.server";
 import Hero from "../components/Hero";
+import TischSection from "../components/tisch/TischSection";
 import ScrollFadeIn from "../components/ScrollFadeIn";
 import Script from "next/script";
 import {
   getAboutTranslations,
-  getProjectsTranslations,
   getContactTranslations,
   getFooterTranslations,
 } from "@/lib/translations-loader";
 import {
   AboutClient,
-  ProjectsClient,
   ContactClient,
   FooterClient,
 } from "../components/ClientWrappers";
@@ -21,9 +20,8 @@ interface HomePageServerProps {
 
 export default async function HomePageServer({ locale }: HomePageServerProps) {
   // Parallel laden aller Translations (hero translations handled by Hero server component)
-  const [aboutT, projectsT, contactT, footerT] = await Promise.all([
+  const [aboutT, contactT, footerT] = await Promise.all([
     getAboutTranslations(locale),
-    getProjectsTranslations(locale),
     getContactTranslations(locale),
     getFooterTranslations(locale),
   ]);
@@ -90,14 +88,12 @@ export default async function HomePageServer({ locale }: HomePageServerProps) {
       <Header locale={locale} />
       <main className="relative">
         <Hero locale={locale} />
+        <TischSection locale={locale} />
 
         <ScrollFadeIn>
           <AboutClient locale={locale} translations={aboutT} />
         </ScrollFadeIn>
 
-        <ScrollFadeIn>
-          <ProjectsClient locale={locale} translations={projectsT} />
-        </ScrollFadeIn>
 
         <ScrollFadeIn>
           <ContactClient locale={locale} translations={contactT} />