feat: GDPR (export+delete) + catalogo ricette 46→96

GDPR (PRD §14, art. 17 + 20)
- GET /me/export.json: dump completo dei dati personali
  (User, Profile, Preferences, WeightEntry, FastEvent, MealPlan+slots,
  DailyCheckIn, DeviceToken). I campi @encrypted vengono decifrati a runtime
  dall'extension Prisma. Risposta con Content-Disposition attachment.
- DELETE /me: cancellazione account con cascade automatico. Per gli
  account email/password richiede conferma password (verifica via
  auth.api.signInEmail). Account OAuth-only: solo sessione attiva.
- Proxy Next /api/gdpr-export per same-origin + cookie sessione.
- /profile: nuova sezione "I tuoi dati (GDPR)" in fondo con due azioni
  (esporta + elimina) e modale di conferma password per la cancellazione.

Catalogo ricette 46 → 96 (target 100)
- 50 ricette nuove italiane keto/low-carb bilanciate per categoria:
  12 colazioni, 14 pranzi, 12 spuntini, 12 cene
- Macros realistici, ingredienti dal seed esistente (no nuovi ingredienti
  necessari)
- Run db:seed: ingredients +0 (catalog 55), recipes +49 (catalog 96),
  recipe-ingredient links: 323

i18n: namespace Profile esteso con dataEyebrow/Title/Subtitle, dataExport*,
dataDelete* (incluso typed errors map), working.

81/81 unit test verdi. Lint, typecheck verdi.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/src/app/[locale]/profile/page.tsx

@@ -7,6 +7,7 @@ import { Masthead } from '@/components/masthead';
 import { getServerSession } from '@/lib/auth';
 
 import { fetchProfile } from './actions';
+import { DataPanel } from './data-panel';
 import { fetchNotificationConfig } from './notifications-actions';
 import { NotificationsPanel } from './notifications-panel';
 import { fetchPreferences } from './preferences-actions';
@@ -74,6 +75,12 @@ function ProfilePageContent({
         <div className="animate-fade-up [animation-delay:660ms]">
           <NotificationsPanel initial={notifications} />
         </div>
+
+        <div className="rule animate-rule-in my-16 [animation-delay:780ms]" />
+
+        <div className="animate-fade-up [animation-delay:840ms]">
+          <DataPanel />
+        </div>
       </main>
     </div>
   );