feat: plakat redesign for subpages (projects, books, legal, privacy)

- Shared SubpageShell (HeaderClient paper strip + ink footer) and SubpageIntro,
  btn/ghost/card helpers in app/_ui/subpage.tsx
- Projects list: poster cards with hard ink shadows, filter pills, ink search field;
  no fake 800ms skeleton and no framer-motion opacity:0 in SSR
- Project detail: poster hero, .plakat-prose markdown, links/stack aside,
  back link works without JS
- Books: server-side fetch (visible without JS), cover + rating pills
- Legal notice / privacy: moved to app/_ui/*Client.tsx, root routes removed
  (middleware always redirects to /[locale]), consent reset via useConsent
- ProjectThumbnail rebuilt on Plakat tokens
- Old Header.tsx + test removed; brown/cream/sand palettes and unused
  glass-panel/admin-glass(-light)/liquid-bg-blob/float CSS dropped
  (liquid palette, glass-card, admin-glass-card stay for admin + 404)
- .plakat-prose replaces the missing typography plugin

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

app/__tests__/components/Header.test.tsx

@@ -1,34 +0,0 @@
-import { render, screen } from '@testing-library/react';
-import Header from '@/app/components/Header';
-
-// Mock next-intl
-jest.mock('next-intl', () => ({
-  useLocale: () => 'en',
-  useTranslations: () => (key: string) => {
-    const messages: Record<string, string> = {
-      home: 'Home',
-      about: 'About',
-      projects: 'Projects',
-      contact: 'Contact'
-    };
-    return messages[key] || key;
-  },
-}));
-
-// Mock next/navigation
-jest.mock('next/navigation', () => ({
-  usePathname: () => '/en',
-}));
-
-describe('Header', () => {
-  it('renders the header with the dk logo', () => {
-    render(<Header />);
-    expect(screen.getByText('dk0')).toBeInTheDocument();
-    
-    // Check for navigation links (appear in both desktop and mobile menus)
-    expect(screen.getAllByText('Home').length).toBeGreaterThan(0);
-    expect(screen.getAllByText('About').length).toBeGreaterThan(0);
-    expect(screen.getAllByText('Projects').length).toBeGreaterThan(0);
-    expect(screen.getAllByText('Contact').length).toBeGreaterThan(0);
-  });
-});

app/__tests__/pre-push-check.test.ts

@@ -124,10 +124,10 @@ describe("i18n: ClientWrappers provide all requested namespaces", () => {
 // ═══════════════════════════════════════════════════════════════════════════
 
 const STATIC_KEYS: Record<string, Record<string, string[]>> = {
-  nav: { Header: ["home", "about", "projects", "contact"] },
+  nav: { HeaderClient: ["home", "about", "projects", "contact"] },
   common: {
-    "books/page": ["back"], "legal-notice/page": ["back"], "privacy-policy/page": ["back"],
-    ProjectDetailClient: ["back"], ProjectsPageClient: ["backToHome"],
+    "books/page": ["back"], LegalNoticeClient: ["backToHome"], PrivacyPolicyClient: ["backToHome"],
+    ProjectDetailClient: ["back", "backToProjects"], ProjectsPageClient: ["backToHome"],
   },
   consent: { ConsentBanner: ["title", "description", "essential", "chat", "alwaysOn", "acceptAll", "acceptSelected", "rejectAll", "hide"] },
   "home.hero": { Hero: ["kicker", "claim", "intro", "countdown", "ctaWork", "ctaContact"] },
@@ -137,8 +137,12 @@ const STATIC_KEYS: Record<string, Record<string, string[]>> = {
   "home.contact.form": { Contact: ["title", "sending", "send", "labels.name", "labels.email", "labels.subject", "labels.message", "placeholders.name", "placeholders.email", "placeholders.subject", "placeholders.message", "errors.nameRequired", "errors.nameMin", "errors.emailRequired", "errors.emailInvalid", "errors.subjectRequired", "errors.subjectMin", "errors.messageRequired", "errors.messageMin", "characters"] },
   "home.contact.info": { Contact: ["locationValue"] },
   "projects.list": { ProjectsPageClient: ["title", "intro", "searchPlaceholder", "all", "noResults", "clearFilters"] },
-  "projects.detail": { ProjectDetailClient: ["liveDemo", "viewSource"] },
-  footer: { Footer: ["role", "madeIn", "legalNotice", "privacyPolicy", "privacySettings", "privacySettingsTitle", "builtWith", "aiDisclaimer", "backToTop", "systemsOnline"] },
+  "projects.detail": { ProjectDetailClient: ["links", "liveDemo", "viewSource", "techStack"] },
+  footer: {
+    Footer: ["role", "madeIn", "legalNotice", "privacyPolicy", "privacySettings", "privacySettingsTitle", "builtWith", "aiDisclaimer", "backToTop", "systemsOnline"],
+    LegalNoticeClient: ["legalNotice"],
+    PrivacyPolicyClient: ["privacyPolicy", "privacySettings", "privacySettingsTitle"],
+  },
   notFound: { "not-found": ["title", "description", "returnHome", "goBack", "exploreWork", "exploreWorkDesc", "viewProjects", "errorReport"] },
   books: { "books/page": ["title", "subtitle", "empty"] },
 };