[AI+HELP+I18N] Help workflow, traduzioni IT/EN, schema 5 livelli AI

- help.js: aggiunta sezione workflow (Compliance Journey) + pageMap entry
- i18n.js: 16 chiavi IT/EN per workflow (fasi, stati, etichette)
- docs/AI_LEVELS_SCHEMA.md: schema architettura 5 livelli AI con privacy matrix
  L1 Guida (safe), L2 Operativo, L3 Aziendale (anonimizzato), L4 Cross-Org (k-anonymity), L5 Normativo

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/js/i18n.js

@@ -181,6 +181,25 @@ const I18n = (function () {
         'time.hours_ago': { it: 'ore fa', en: 'hours ago' },
         'time.yesterday': { it: 'Ieri', en: 'Yesterday' },
         'time.days_ago': { it: 'giorni fa', en: 'days ago' },
+
+        // ── Compliance Journey / Workflow ──────────────
+        'workflow.title':           { it: 'Compliance Journey',             en: 'Compliance Journey' },
+        'workflow.progress':        { it: 'Progresso Art.21 NIS2',          en: 'NIS2 Art.21 Progress' },
+        'workflow.implementation':  { it: 'implementazione misure',         en: 'measures implementation' },
+        'workflow.next_action':     { it: 'Prossima azione consigliata',    en: 'Recommended next action' },
+        'workflow.phase':           { it: 'Fase',                           en: 'Phase' },
+        'workflow.go_to_module':    { it: 'Vai al modulo',                  en: 'Go to module' },
+        'workflow.ph1':             { it: 'Preparazione',                   en: 'Preparation' },
+        'workflow.ph2':             { it: 'Valutazione',                    en: 'Assessment' },
+        'workflow.ph3':             { it: 'Rischi',                         en: 'Risks' },
+        'workflow.ph4':             { it: 'Implementazione',                en: 'Implementation' },
+        'workflow.ph5':             { it: 'Monitoraggio',                   en: 'Monitoring' },
+        'workflow.ph6':             { it: 'Reportistica',                   en: 'Reporting' },
+        'workflow.status_done':     { it: 'Completato',                     en: 'Completed' },
+        'workflow.status_partial':  { it: 'In corso',                       en: 'In progress' },
+        'workflow.status_active':   { it: 'Attivo',                         en: 'Active' },
+        'workflow.status_todo':     { it: 'Da iniziare',                    en: 'To do' },
+        'nav.workflow':             { it: 'Compliance Journey',             en: 'Compliance Journey' },
     };
 
     // ── API Pubblica ──────────────────────────────────────────────────