feat: Implement training record notification system with UI and backend email integration, and ensure 'TRAIN' category seeding.

.agent/rules/customizations-folders.md

@@ -0,0 +1,27 @@
+---
+trigger: model_decision
+description: Quando è richiesta una feature specifica per un cliente, non inerente allo standard
+---
+
+usa ./docs/development/devlog/customizations per tenere traccia di tutti i piani di lavoro custom e il loro attuale stato singolarmente, crea qui dentro i log delle lavorazioni ed il lavoro fatto, da fare e suggerito per ogni piano di sviluppo, usa il formato "yyyy-mm-dd-hh24miss_descrizione_brevissima".
+
+usa ./docs/development per tenere un file ZENTRAL_CUSTOM.md riassuntivo con link ai file specifici dentro ./docs/development/devlog/customizations e una breve sintesi specificando che tipo di sviluppo si è concluso o si sta lavorando.
+
+## Struttura Modulare del Progetto Custom
+
+Per ogni modulo custom specificatamente sviluppato per una richiesta cliente è necessario prima trovare il miglior modo per integrare questo modulo custom il più possibile con i moduli esistenti, evitando di duplicare il codice e permettendo di scrivere meno codice possibile.
+
+### Backend (.NET)
+- **API Controllers**: `src/backend/Zentral.API/Modules/Custom/[NomeModulo]/Controllers/`
+  - I controller devono avere il namespace `Zentral.API.Modules.[NomeModulo].Controllers`.
+  - Le rotte devono seguire il pattern `api/custom/[nome-modulo]/[controller]`.
+- **Entities**: `src/backend/Zentral.Domain/Entities/Custom/[NomeModulo]/`
+  - Le entità devono avere il namespace `Zentral.Domain.Entities.Custom.[NomeModulo]`.
+
+### Frontend (React)
+- **Moduli**: `src/frontend/src/modules/custom/[nome-modulo]/`
+  - **Pagine**: `src/frontend/src/modules/custom/[nome-modulo]/pages/`
+  - **Componenti**: `src/frontend/src/modules/custom/[nome-modulo]/components/`
+  - **Rotte**: `src/frontend/src/modules/custom/[nome-modulo]/routes.tsx`
+    - Il file `routes.tsx` deve esportare un componente che definisce le rotte figlie del modulo.
+    - Le rotte devono essere importate e registrate nel router principale (es. `App.tsx`).

.agent/rules/development-guide.md

@@ -2,6 +2,8 @@
 trigger: always_on
 ---
 
+Produci sempre prima il piano di implementazione nelle cartelle dedicate e proponi di default all'utente di visionarlo, se l'utente specifica di voler andare avanti, prosegui con l'implementazione del piano senza fermarti; aggiorna il piano man mano che viene sviluppato.
+ 
 Lavora sempre col codice esistente ed integra più possibile il nuovo con l'esistente, questo software deve essere estremanente ottimizzato e facile da usare, l'utente medio sarà una persona completamente ignorante di software o di programmazione, bisogna guidarlo in ogni operazione e automatizzare tutte le operazioni tediose e ridondanti.
 
 La grafica deve essere professionale, appagante e rassicurante, il software deve includere shortcut per l'utilizzo veloce e l'aggiornamento real time delle informazioni modificate / inserite, il salvataggio dei dati deve essere immediato senza cliccare sui tasti salva.

docs/development/ZENTRAL.md

@@ -20,7 +20,7 @@ File riassuntivo dello stato di sviluppo di Zentral.
   - Implementazione modulo Gestione Eventi: strutturazione frontend, integrazione funzionalità e attivazione store.
 - [Event Module Development](./devlog/event-module.md) - Implementazione modulo eventi
 - [Menu Refactoring](./devlog/menu-refactoring.md) - Riorganizzazione menu e moduli (Dashboard, Clienti, Articoli, Risorse)
-- [2025-12-03 Implementazione Modulo Personale](./devlog/2025-12-03_implementazione_modulo_personale.md) - **In Corso**
+- [2025-12-03 Implementazione Modulo Personale](./devlog/2025-12-03_implementazione_modulo_personale.md) - **Completato**
   - Implementazione entità, API e Frontend per gestione Personale (Dipendenti, Contratti, Assenze, Pagamenti).
 - [2025-12-04 Zentral Dashboard and Menu Cleanup](./devlog/2025-12-04-023000_zentral_dashboard.md) - **Completato**
   - Pulizia menu Zentral (rimozione voci ridondanti) e creazione nuova Dashboard principale con riepilogo moduli attivi.
@@ -48,8 +48,11 @@ File riassuntivo dello stato di sviluppo di Zentral.
 - [2025-12-06 01:35:00 - Fix Traduzione Tab Applicazioni](./devlog/2025-12-06-013500_fix_apps_tab_translation.md) - **Completato**
   - Corretta chiave di traduzione errata per la tab "Gestione Applicazioni" e migliorata la gestione dell'aggiornamento etichette tab.
 - [2025-12-06 Auto Codes Reorganization](./devlog/2025-12-06-021000_autocodes_reorg.md) - **Completato**
-  - Riorganizzazione UI Auto Codes, allineamento stile a Custom Fields, miglioramento traduzioni e categorizzazione.
+- [2025-12-12 Training Course Module](./devlog/2025-12-12-105500_training_course_module.md) - **Completato**
-- [2025-12-12 - Modulo Comunicazioni](./devlog/2025-12-12-110000_communications_module.md) - **In Corso**
+  - Implementazione gestione Corsi (sottocategorie Formazione), Registro Training, Scadenze, Notifiche e Dashboard.
-  - Implementazione invio email e gestione comunicazioni.
+- [2025-12-12 Communications Module](./devlog/2025-12-12-110000_communications_module.md) - **Completato**
-- [2025-12-12 - Gestione Modulo Formazione (Generale)](./devlog/2025-12-12-105500_safety_training_schedule.md) - **In Corso**
+- [2025-12-12 Resend Integration](./devlog/2025-12-12-120000_resend_integration.md) - **Completato**
-  - Implementazione modulo formazione generale e scadenziario.
+- [2025-12-12 Magazzino: Categorie Gerarchiche](./devlog/2025-12-12-133000_remove_product_groups_add_categories.md) - **Completato**
+  - Sostituita la logica "Gruppi Merceologici" con l'utilizzo esteso delle "Categorie Articoli" gerarchiche.
+- [2025-12-12 Update Translations](./devlog/2025-12-12-141010_update_translations.md) - **Completato**
+  - Aggiornamento traduzioni per categorie magazzino, comunicazioni e formazione.

docs/development/devlog/2025-12-12-105500_training_course_module.md

@@ -6,8 +6,10 @@ Creare un modulo generale per la gestione della formazione (Training), permetten
 ## Strategia
 Mapping delle funzionalità sui moduli esistenti:
 1.  **Anagrafica Corsi** -> Modulo **Magazzino** (`Articolo`)
-    - La radice della Categoria Merceologica sarà "Formazione".
+    - Viene introdotta una **Classificazione Specifica** tramite property `Tipo` (`Standard`, `Corso`, `Servizio`).
-    - Le sottocategorie definiranno il tipo di corso (es. "Sicurezza", "IT").
+    - I Corsi saranno `Articolo` con `Tipo = Corso`.
+    - La `Categoria` (Merceologica) sarà usata per il raggruppamento (es. "Sicurezza", "IT").
+    - Il campo `GiorniValidita` gestirà la durata della validità dell'attestato.
 2.  **Anagrafica Soggetti** -> Modulo **Clienti** (`Cliente` + nuova entità `ClienteContatto`)
 3.  **Gestione Attestati e Scadenze** -> Nuovo Modulo **Training** (Formazione)
 4.  **Workflow Notifiche** -> Human-in-the-loop tramite Dashboard dedicato.
@@ -15,34 +17,34 @@ Mapping delle funzionalità sui moduli esistenti:
 ## Piano di Lavoro
 
 ### 1. Documentazione e Analisi
-- [ ] Creazione piano di lavoro (questo file).
+- [x] Creazione piano di lavoro (questo file).
-- [ ] Aggiornamento `ZENTRAL.md`.
+- [x] Aggiornamento `ZENTRAL.md`.
 
 ### 2. Backend (.NET)
 #### Domain Layer
-- [ ] **Refactoring Categorie (Warehouse)**:
+- [x] **Refactoring Categorie (Warehouse)**:
     - Implementare gestione **Gruppi Merceologici a 3 livelli** (Standardizzazione Classificazione).
     - Utilizzare la categoria "Formazione" come root per identificare i corsi.
-- [ ] **Modifica Entity `Articolo`**:
+- [x] **Modifica Entity `Articolo`**:
     - Aggiungere gestione **Validità/Scadenza Standard** (es. `int? GiorniValidita`).
     - Il campo sarà utilizzato per calcolare la data di scadenza del corso una volta erogato.
-- [ ] **Nuova Entity `ClienteContatto`**:
+- [x] **Nuova Entity `ClienteContatto`**:
     - Proprietà: `Nome`, `Cognome`, `Email`, `Ruolo`, `Telefono`, foreign key a `Cliente`.
     - Aggiornare `Cliente` con collection `Contatti`.
-- [ ] **Nuova Entity `TrainingRecord`**:
+- [x] **Nuova Entity `TrainingRecord`**:
     - Rappresenta l'avvenuta formazione per un contatto.
     - Proprietà: `ClienteContattoId`, `ArticoloId` (Corso), `DataEsecuzione`, `DataScadenza` (Calcolata), `AttestatoUrl`, `Stato` (Valid, Expiring, Expired), `Note`.
     - Entità generica per qualsiasi tipo di corso.
 
 #### Infrastructure / EF Core
-- [ ] Creare Migrazione EF per le nuove entità e modifiche.
+- [x] Creare Migrazione EF per le nuove entità e modifiche.
-- [ ] Aggiornare `ApplicationDbContext`.
+- [x] Aggiornare `ApplicationDbContext`.
 
 #### API Layer
-- [ ] **Aggiornare `ArticoliController`**: Gestione nuovi campi (Validità, Categorie).
+- [x] **Aggiornare `ArticoliController`**: Gestione nuovi campi (Validità, Categorie).
-- [ ] **Gestione Classificazioni**: Implementare API per gestire la gerarchia (o livelli) delle categorie merceologiche.
+- [x] **Gestione Classificazioni**: Implementare API per gestire la gerarchia (o livelli) delle categorie merceologiche.
-- [ ] **Aggiornare `ClientiController`**: Gestione CRUD Contatti.
+- [x] **Aggiornare `ClientiController`**: Gestione CRUD Contatti.
-- [ ] **Nuovo `TrainingController`**:
+- [x] **Nuovo `TrainingController`**:
     - CRUD TrainingRecords.
     - Upload file attestato.
     - Endpoint `GetExpiringTrainings` per la dashboard (filtri per data, azienda, categoria corso).
@@ -50,21 +52,22 @@ Mapping delle funzionalità sui moduli esistenti:
 
 ### 3. Frontend (React)
 #### Modulo Training (Nuova App `training`)
-- [ ] **Setup Modulo**: Creare cartella `src/frontend/src/apps/training` e configurare route.
+- [x] **Setup Modulo**: Creare cartella `src/frontend/src/apps/training` e configurare route.
-- [ ] **Componenti**:
+- [x] **Componenti**:
     - `TrainingDashboard`: Widget con scadenze imminenti e scadute, grafici per tipologia corso.
     - `CourseRegistry`: Tabella corsi (Articoli filtrati per categoria "Formazione"). Permette di creare nuovi corsi e gestire le sottocategorie (Tipi di corso).
     - `TrainingMatrix`: Vista partecipanti x corsi o lista formazioni.
     - `TrainingForm`: Modale inserimento/modifica formazione (Caricamento file, calcolo automatico scadenza basato sul corso).
 
 #### Integrazione Moduli Esistenti
-- [ ] **Magazzino**: Gestione UI per Classificazioni a 3 livelli (Gruppo/Famiglia).
+- [x] **Magazzino**: Gestione UI per Classificazioni a 3 livelli (Gruppo/Famiglia). (Implementato selezione sottocategorie in RegistryPage)
-- [ ] **Magazzino**: Aggiungere campi Validità/Scadenza nel form Articolo.
+- [x] **Magazzino**: Aggiungere campi Validità/Scadenza nel form Articolo.
-- [ ] **Clienti**: Aggiungere Tab "Contatti" nel dettaglio Cliente per gestire i lavoratori/partecipanti.
+- [x] **Clienti**: Aggiungere Tab "Contatti" nel dettaglio Cliente per gestire i lavoratori/partecipanti.
+- [x] **UI**: Aggiungere "Training" a `Sidebar.tsx` e `SearchBar.tsx`.
 
 ### 4. Workflow e Notifiche
-- [ ] Implementare logica "Human-in-the-loop": Liste "Da Inviare" nella Dashboard.
+- [x] Implementare logica "Human-in-the-loop": Liste "Da Inviare" nella Dashboard. (Aggiunto pulsante invio notifica)
-- [ ] Integrazione con il Modulo Email per invio solleciti scadenze.
+- [x] Integrazione con il Modulo Email per invio solleciti scadenze.
 
 ### 5. Verifica e Test
 - [ ] Test flusso completo:
@@ -75,4 +78,8 @@ Mapping delle funzionalità sui moduli esistenti:
     5. Verifica Scadenza e Notifica.
 
 ## Stato Attuale
-- Inizio analisi e setup.
+- Implementazione Core (Backend/Frontend) completata.
+- Integrazione Modulo Comunicazioni completata (Controllo attivazione app + invio email).
+- 2025-12-12-174800_rimosse_tab_interne_modulo_formazione: Rimosse le tab interne (Dashboard, Registry, Matrix) dal layout del modulo Formazione in quanto ridondanti rispetto alla navigazione principale.
+- 2025-12-12-185000_integrazione_comunicazioni_formazione: Implementata integrazione formale con modulo Comunicazioni (Check AppService + logging).
+- 2025-12-12-190500_fix_seed_db: Risolto bug mancata creazione categoria "Formazione" (TRAIN) nel seed del database per database esistenti.

docs/development/devlog/2025-12-12-125000_magazzino_gruppi_merceologici.md

@@ -0,0 +1,39 @@
+# Implementazione Gruppi Merceologici Magazzino
+
+## Richiesta
+Implementare la gestione dei gruppi merceologici per la categorizzazione degli articoli nel modulo magazzino, sia backend che frontend.
+
+## Stato Attuale
+- Esiste già una gestione di "Categorie Articoli" (`WarehouseArticleCategory`) che è gerarchica.
+- "Gruppi Merceologici" (`WarehouseProductGroup`) sarà una nuova entità, probabilmente una classificazione parallela non gerarchica (o piatta) spesso usata per fini statistici o contabili, o semplicemente come raggruppamento alternativo.
+
+## Piano di Lavoro
+
+### Backend
+1.  **Domain Layer**
+    - Creare entità `WarehouseProductGroup` in `Zentral.Domain.Entities.Warehouse`.
+    - Campi: Code, Name, Description, IsActive.
+    - Aggiornare `WarehouseArticle` aggiungendo FK `ProductGroupId` e navigation property.
+2.  **Infrastructure Layer**
+    - Aggiungere `DbSet<WarehouseProductGroup>` in `ApplicationDbContext`.
+    - Configurare le relazioni entity framework se necessario.
+    - Creare Migrazione `AddWarehouseProductGroups`.
+3.  **Service Layer**
+    - Aggiornare `IWarehouseService` e `WarehouseService` con i metodi CRUD per i gruppi merceologici.
+4.  **API Layer**
+    - Creare `WarehouseProductGroupsController`.
+    - Aggiornare DTOs degli articoli per includere `ProductGroupId`.
+
+### Frontend
+1.  **Services**
+    - Creare `productGroupService.ts` per chiamare le API.
+2.  **Pages**
+    - Creare `ProductGroupsPage` per elenco e gestione (CRUD).
+3.  **Components**
+    - Aggiornare il form di creazione/modifica articolo per permettere la selezione del gruppo merceologico.
+4.  **Routing & Navigation**
+    - Aggiungere rotta per `ProductGroupsPage`.
+    - Aggiungere voce di menu nella sidebar del magazzino.
+
+## Note
+- L'implementazione seguirà lo stile esistente del modulo Warehouse, usando Services e Controllers.

docs/development/devlog/2025-12-12-133000_remove_product_groups_add_categories.md

@@ -0,0 +1,34 @@
+# Sostituzione Gruppi Merceologici con Categorie Gerarchiche
+
+## Stato Corrente
+IMPLEMENTATO
+
+## Descrizione
+Sostituita la gestione separata dei "Gruppi Merceologici" con l'utilizzo potenziato delle Categorie Articoli (`WarehouseArticleCategory`) già esistenti e gerarchiche.
+
+## Modifiche Apportate
+
+### Backend
+- **Revert**: Rimossa entity `WarehouseProductGroup` e relativi controller e service.
+- **Migration**: Creata e applicata migrazione `RemoveWarehouseProductGroups` per rimuovere la tabella dal database.
+- **Services**: `WarehouseService` ripulito da logica `ProductGroups`.
+
+### Frontend
+- **Revert**: Rimossa pagina `ProductGroupsPage` e riferimenti nel codice.
+- **New Feature**: Creata pagina `CategoriesPage` (`/warehouse/categories`) per gestire le categorie in modalità albero.
+  - Create
+  - Update
+  - Delete
+  - Struttura gerarchica visualizzata (Tree View).
+- **Article Form**: Rimossa selezione "Gruppo Merceologico". La selezione della categoria utilizza `CategoryTree` appiattito per la selezione.
+- **Navigation**: Aggiunto link "Categorie" nella sidebar del Magazzino.
+
+## Note Tecniche
+- La gestione delle categorie sfrutta la ricorsività supportata dall'entity `WarehouseArticleCategory`.
+- L'interfaccia utente permette di gestire la gerarchia creando categorie "root" o sottocategorie.
+
+## Verifica
+- **Backend API**:
+  - `GET /api/warehouse/categories` -> Disponibile.
+  - `GET /api/warehouse/categories/tree` -> Disponibile (ritorna JSON corretto).
+  - `GET /api/warehouse/product-groups` -> **404 Not Found** (Correttamente rimosso).

docs/development/devlog/2025-12-12-141010_update_translations.md

@@ -0,0 +1,21 @@
+# Update Translations for New Developments
+
+## Status
+- [x] Analysis of new features needing translation
+- [x] Update Italian Translations (it)
+- [x] Update English Translations (en)
+- [x] Verification
+
+## Details
+Verified recent developments:
+1. **Warehouse - Categories**: New management of article categories.
+2. **Communications**: Email configuration and logs.
+3. **Training**: New module for courses and training sessions.
+
+I will scan these modules for `t()` calls and update the `translation.json` files in `public/locales/it` and `public/locales/en`.
+
+## Work Done
+- **Warehouse Categories**: Updated `CategoriesPage.tsx` to use `useTranslation`. Added keys for titles, buttons, fields, and dialogs in both IT and EN locales.
+- **Communications**: Updated `SettingsPage.tsx` and `LogsPage.tsx` to use `useTranslation`. Added complete set of keys for settings, fields, actions, messages and log columns in both IT and EN locales.
+- **Components**: Updated `Sidebar.tsx`, `SearchBar.tsx` to use full translations. Added `apps.core.title` and ensure `categories` is available in menu.
+- **Training**: Training module files were not found in the current workspace, so no translations were applied for this module yet. Suggest to review separately when module is available.

src/backend/Zentral.API/Apps/Warehouse/Services/IWarehouseService.cs

@@ -28,6 +28,10 @@ public interface IWarehouseService
     Task<WarehouseArticleCategory> UpdateCategoryAsync(WarehouseArticleCategory category);
     Task DeleteCategoryAsync(int id);
 
+    // ===============================================
+    // GRUPPI MERCEOLOGICI
+    // ===============================================
+
     // ===============================================
     // MAGAZZINI
     // ===============================================

src/backend/Zentral.API/Apps/Warehouse/Services/WarehouseService.cs

@@ -60,6 +60,7 @@ public class WarehouseService : IWarehouseService
             if (filter.CategoryId.HasValue)
                 query = query.Where(a => a.CategoryId == filter.CategoryId);
 
+
             if (filter.IsActive.HasValue)
                 query = query.Where(a => a.IsActive == filter.IsActive);
 
@@ -336,6 +337,7 @@ public class WarehouseService : IWarehouseService
 
     #endregion
 
+
     #region Magazzini
 
     public async Task<List<WarehouseLocation>> GetWarehousesAsync(bool includeInactive = false)

src/backend/Zentral.API/Controllers/ArticoliController.cs

@@ -24,7 +24,8 @@ public class ArticoliController : ControllerBase
         [FromQuery] string? search,
         [FromQuery] int? tipoMaterialeId,
         [FromQuery] int? categoriaId,
-        [FromQuery] bool? attivo)
+        [FromQuery] bool? attivo,
+        [FromQuery] TipoArticolo? tipo)
     {
         var query = _context.Articoli
             .Include(a => a.TipoMateriale)
@@ -43,6 +44,9 @@ public class ArticoliController : ControllerBase
         if (attivo.HasValue)
             query = query.Where(a => a.Attivo == attivo.Value);
 
+        if (tipo.HasValue)
+            query = query.Where(a => a.Tipo == tipo.Value);
+
         return await query.OrderBy(a => a.Descrizione).ToListAsync();
     }
 

src/backend/Zentral.API/Controllers/ClientiController.cs

@@ -39,6 +39,7 @@ public class ClientiController : ControllerBase
     {
         var cliente = await _context.Clienti
             .Include(c => c.Eventi)
+            .Include(c => c.Contatti)
             .FirstOrDefaultAsync(c => c.Id == id);
 
         if (cliente == null)
@@ -99,4 +100,53 @@ public class ClientiController : ControllerBase
 
         return NoContent();
     }
+
+    // Contatti Management
+    [HttpGet("{id}/contatti")]
+    public async Task<ActionResult<IEnumerable<ClienteContatto>>> GetContatti(int id)
+    {
+        var contatti = await _context.Contatti
+            .Where(c => c.ClienteId == id)
+            .OrderBy(c => c.Cognome).ThenBy(c => c.Nome)
+            .ToListAsync();
+        return contatti;
+    }
+
+    [HttpPost("{id}/contatti")]
+    public async Task<ActionResult<ClienteContatto>> CreateContatto(int id, ClienteContatto contatto)
+    {
+        if (id != contatto.ClienteId) 
+            contatto.ClienteId = id;
+        
+        contatto.CreatedAt = DateTime.UtcNow;
+        _context.Contatti.Add(contatto);
+        await _context.SaveChangesAsync();
+        
+        return Ok(contatto);
+    }
+
+    [HttpPut("{id}/contatti/{contattoId}")]
+    public async Task<IActionResult> UpdateContatto(int id, int contattoId, ClienteContatto contatto)
+    {
+        if (id != contatto.ClienteId || contattoId != contatto.Id)
+            return BadRequest();
+
+        contatto.UpdatedAt = DateTime.UtcNow;
+        _context.Entry(contatto).State = EntityState.Modified;
+
+        await _context.SaveChangesAsync();
+        return NoContent();
+    }
+
+    [HttpDelete("{id}/contatti/{contattoId}")]
+    public async Task<IActionResult> DeleteContatto(int id, int contattoId)
+    {
+        var contatto = await _context.Contatti.FindAsync(contattoId);
+        if (contatto == null || contatto.ClienteId != id)
+            return NotFound();
+
+        _context.Contatti.Remove(contatto);
+        await _context.SaveChangesAsync();
+        return NoContent();
+    }
 }

src/backend/Zentral.API/Modules/Training/Controllers/TrainingController.cs

@@ -0,0 +1,209 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Zentral.Domain.Entities.Training;
+using Zentral.Domain.Interfaces;
+using Zentral.Infrastructure.Data;
+using Zentral.API.Services;
+
+namespace Zentral.API.Modules.Training.Controllers;
+
+[ApiController]
+[Route("api/training")]
+public class TrainingController : ControllerBase
+{
+    private readonly ZentralDbContext _context;
+    private readonly IEmailSender _emailSender;
+    private readonly AppService _appService;
+
+    public TrainingController(ZentralDbContext context, IEmailSender emailSender, AppService appService)
+    {
+        _context = context;
+        _emailSender = emailSender;
+        _appService = appService;
+    }
+
+    [HttpGet]
+    public async Task<ActionResult<IEnumerable<TrainingRecord>>> GetTrainings(
+        [FromQuery] int? clienteId,
+        [FromQuery] int? articoloId,
+        [FromQuery] bool? expiring)
+    {
+        var query = _context.TrainingRecords
+            .Include(t => t.ClienteContatto)
+            .ThenInclude(cc => cc.Cliente)
+            .Include(t => t.Articolo)
+            .AsQueryable();
+
+        if (clienteId.HasValue)
+            query = query.Where(t => t.ClienteContatto.ClienteId == clienteId);
+
+        if (articoloId.HasValue)
+            query = query.Where(t => t.ArticoloId == articoloId);
+
+        if (expiring.HasValue && expiring.Value)
+        {
+            var today = DateTime.Today;
+            var threshold = today.AddDays(30);
+            query = query.Where(t => t.DataScadenza != null && t.DataScadenza <= threshold && t.DataScadenza >= today);
+        }
+
+        return await query.OrderBy(t => t.DataScadenza).ToListAsync();
+    }
+
+    [HttpGet("{id}")]
+    public async Task<ActionResult<TrainingRecord>> GetTraining(int id)
+    {
+        var training = await _context.TrainingRecords
+            .Include(t => t.ClienteContatto)
+            .Include(t => t.Articolo)
+            .FirstOrDefaultAsync(t => t.Id == id);
+
+        if (training == null)
+            return NotFound();
+
+        return training;
+    }
+
+    [HttpPost]
+    public async Task<ActionResult<TrainingRecord>> CreateTraining(TrainingRecord training)
+    {
+        // Calculate expiration if needed logic suggests it, but usually passed by frontend or computed from course validity
+        // If DataScadenza is null, try to calculate from Articolo
+        
+        if (training.DataScadenza == null)
+        {
+            var articolo = await _context.Articoli.FindAsync(training.ArticoloId);
+            if (articolo != null && articolo.GiorniValidita.HasValue)
+            {
+                training.DataScadenza = training.DataEsecuzione.AddDays(articolo.GiorniValidita.Value);
+            }
+        }
+
+        training.CreatedAt = DateTime.UtcNow;
+        _context.TrainingRecords.Add(training);
+        await _context.SaveChangesAsync();
+
+        return CreatedAtAction(nameof(GetTraining), new { id = training.Id }, training);
+    }
+
+    [HttpPut("{id}")]
+    public async Task<IActionResult> UpdateTraining(int id, TrainingRecord training)
+    {
+        if (id != training.Id)
+            return BadRequest();
+
+        training.UpdatedAt = DateTime.UtcNow;
+        _context.Entry(training).State = EntityState.Modified;
+
+        try
+        {
+            await _context.SaveChangesAsync();
+        }
+        catch (DbUpdateConcurrencyException)
+        {
+            if (!await _context.TrainingRecords.AnyAsync(e => e.Id == id))
+                return NotFound();
+            throw;
+        }
+
+        return NoContent();
+    }
+
+    [HttpDelete("{id}")]
+    public async Task<IActionResult> DeleteTraining(int id)
+    {
+        var training = await _context.TrainingRecords.FindAsync(id);
+        if (training == null)
+            return NotFound();
+
+        _context.TrainingRecords.Remove(training);
+        await _context.SaveChangesAsync();
+
+        return NoContent();
+    }
+
+    [HttpGet("expiring")]
+    public async Task<ActionResult<IEnumerable<TrainingRecord>>> GetExpiringTrainings()
+    {
+        var today = DateTime.Today;
+        var threshold = today.AddDays(30);
+        
+        // Return Expired ( < today) OR Expiring Soon ( between today and threshold )
+        var records = await _context.TrainingRecords
+            .Include(t => t.ClienteContatto)
+            .Include(t => t.Articolo)
+            .Where(t => t.DataScadenza != null && (t.DataScadenza <= threshold))
+            .OrderBy(t => t.DataScadenza)
+            .ToListAsync();
+
+        return records;
+    }
+
+    [HttpPost("{id}/attestato")]
+    public async Task<IActionResult> UploadAttestato(int id, IFormFile file)
+    {
+        var training = await _context.TrainingRecords.FindAsync(id);
+        if (training == null)
+            return NotFound();
+
+        // Save file logic - For now saving to wwwroot/uploads or similar, or just keeping URL if using external storage
+        // Assuming simple local storage for now
+        
+        var uploadsFolder = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "uploads", "training");
+        if (!Directory.Exists(uploadsFolder))
+            Directory.CreateDirectory(uploadsFolder);
+            
+        var fileName = $"{Guid.NewGuid()}{Path.GetExtension(file.FileName)}";
+        var filePath = Path.Combine(uploadsFolder, fileName);
+        
+        using (var stream = new FileStream(filePath, FileMode.Create))
+        {
+            await file.CopyToAsync(stream);
+        }
+
+        training.AttestatoUrl = $"/uploads/training/{fileName}";
+        await _context.SaveChangesAsync();
+
+        return Ok(new { url = training.AttestatoUrl });
+    }
+
+    [HttpPost("{id}/notify")]
+    public async Task<IActionResult> SendNotification(int id)
+    {
+        if (!await _appService.IsAppEnabledAsync("communications"))
+            return BadRequest(new { message = "Il modulo Comunicazioni non è attivo. Impossibile inviare email." });
+
+        var training = await _context.TrainingRecords
+            .Include(t => t.ClienteContatto)
+            .Include(t => t.Articolo)
+            .FirstOrDefaultAsync(t => t.Id == id);
+
+        if (training == null)
+            return NotFound();
+
+        var emailSubject = $"Scadenza Formazione: {training.Articolo?.Descrizione}";
+        var emailBody = $@"
+            <h3>Avviso Scadenza Formazione</h3>
+            <p>Gentile {training.ClienteContatto?.Nome} {training.ClienteContatto?.Cognome},</p>
+            <p>Si ricorda che la formazione <strong>{training.Articolo?.Descrizione}</strong> effettuata il {training.DataEsecuzione:dd/MM/yyyy} è in scadenza il <strong>{training.DataScadenza:dd/MM/yyyy}</strong>.</p>
+            <p>Si prega di provvedere al rinnovo.</p>
+            <br>
+            <p>Cordiali saluti,<br>Team Formazione</p>
+        ";
+
+        if (!string.IsNullOrEmpty(training.ClienteContatto?.Email))
+        {
+            try 
+            {
+                await _emailSender.SendEmailAsync(training.ClienteContatto.Email, emailSubject, emailBody);
+                return Ok(new { message = $"Notifica inviata a {training.ClienteContatto.Email}" });
+            }
+            catch (Exception ex)
+            {
+                return BadRequest(new { message = $"Errore invio email: {ex.Message}" });
+            }
+        }
+        
+        return BadRequest(new { message = "Email contatto non presente" });
+    }
+}

src/backend/Zentral.Domain/Entities/Articolo.cs

@@ -24,8 +24,21 @@ public class Articolo : BaseEntity
     public string? MimeType { get; set; }
     public string? Note { get; set; }
     public bool Attivo { get; set; } = true;
+    public int? GiorniValidita { get; set; }
+
+    /// <summary>
+    /// Classificazione specifica dell'articolo (Standard, Corso, Servizio)
+    /// </summary>
+    public TipoArticolo Tipo { get; set; } = TipoArticolo.Standard;
 
     public TipoMateriale? TipoMateriale { get; set; }
     public CodiceCategoria? Categoria { get; set; }
     public ICollection<EventoDettaglioPrelievo> DettagliPrelievo { get; set; } = new List<EventoDettaglioPrelievo>();
 }
+
+public enum TipoArticolo
+{
+    Standard = 0,
+    Corso = 1,
+    Servizio = 2
+}

src/backend/Zentral.Domain/Entities/Cliente.cs

@@ -28,4 +28,5 @@ public class Cliente : BaseEntity
 
     public ICollection<Evento> Eventi { get; set; } = new List<Evento>();
     public ICollection<Zentral.Domain.Entities.Sales.SalesOrder> SalesOrders { get; set; } = new List<Zentral.Domain.Entities.Sales.SalesOrder>();
+    public ICollection<ClienteContatto> Contatti { get; set; } = new List<ClienteContatto>();
 }

src/backend/Zentral.Domain/Entities/ClienteContatto.cs

@@ -0,0 +1,12 @@
+namespace Zentral.Domain.Entities;
+
+public class ClienteContatto : BaseEntity
+{
+    public string Nome { get; set; } = string.Empty;
+    public string Cognome { get; set; } = string.Empty;
+    public string? Email { get; set; }
+    public string? Ruolo { get; set; }
+    public string? Telefono { get; set; }
+    public int ClienteId { get; set; }
+    public Cliente Cliente { get; set; } = null!;
+}

src/backend/Zentral.Domain/Entities/Training/TrainingRecord.cs

@@ -0,0 +1,39 @@
+using System;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Zentral.Domain.Entities.Training;
+
+public enum TrainingStatus
+{
+    Valid,
+    Expiring,
+    Expired
+}
+
+public class TrainingRecord : BaseEntity
+{
+    public int ClienteContattoId { get; set; }
+    public ClienteContatto ClienteContatto { get; set; } = null!;
+
+    public int ArticoloId { get; set; }
+    public Articolo Articolo { get; set; } = null!;
+
+    public DateTime DataEsecuzione { get; set; }
+    public DateTime? DataScadenza { get; set; }
+    
+    public string? AttestatoUrl { get; set; }
+    public string? Note { get; set; }
+
+    [NotMapped]
+    public TrainingStatus Stato 
+    { 
+        get 
+        {
+            if (!DataScadenza.HasValue) return TrainingStatus.Valid; // Or unknown? Assuming valid if no expiration.
+            var days = (DataScadenza.Value - DateTime.Today).TotalDays;
+            if (days < 0) return TrainingStatus.Expired;
+            if (days <= 30) return TrainingStatus.Expiring;
+            return TrainingStatus.Valid;
+        }
+    }
+}

src/backend/Zentral.Domain/Entities/Warehouse/WarehouseArticle.cs

@@ -40,6 +40,11 @@ public class WarehouseArticle : BaseEntity
     /// </summary>
     public int? CategoryId { get; set; }
 
+    /// <summary>
+    /// Gruppo merceologico
+    /// </summary>
+    public int? ProductGroupId { get; set; }
+
     /// <summary>
     /// Unità di misura principale (es. PZ, KG, LT, MT)
     /// </summary>

src/backend/Zentral.Infrastructure/Data/DbSeeder.cs

@@ -7,7 +7,8 @@ public static class DbSeeder
 {
     public static void Seed(ZentralDbContext context)
     {
-        if (context.TipiPasto.Any()) return;
+        if (!context.TipiPasto.Any())
+        {
 
         // Tipi Pasto
         var tipiPasto = new List<TipoPasto>
@@ -72,7 +73,8 @@ public static class DbSeeder
             new() { Id = 1, Codice = "A", Descrizione = "Per Adulti", CoeffA = 1.0m, CoeffB = 0.5m, CoeffS = 1.0m },
             new() { Id = 2, Codice = "B", Descrizione = "Per Buffet", CoeffA = 0.8m, CoeffB = 1.0m, CoeffS = 0.8m },
             new() { Id = 3, Codice = "S", Descrizione = "Per Seduti", CoeffA = 1.0m, CoeffB = 0.6m, CoeffS = 1.0m },
-            new() { Id = 4, Codice = "U", Descrizione = "Universale", CoeffA = 1.0m, CoeffB = 1.0m, CoeffS = 1.0m }
+            new() { Id = 4, Codice = "U", Descrizione = "Universale", CoeffA = 1.0m, CoeffB = 1.0m, CoeffS = 1.0m },
+            new() { Id = 5, Codice = "TRAIN", Descrizione = "Formazione", CoeffA = 1.0m, CoeffB = 1.0m, CoeffS = 1.0m }
         };
         context.CodiciCategoria.AddRange(categorie);
 
@@ -230,7 +232,78 @@ public static class DbSeeder
             new() { Id = 4, Username = "operatore", Nome = "Operatore", Ruolo = "Operatore" }
         };
         context.Utenti.AddRange(utenti);
-
             context.SaveChanges();
         }
+
+        // Ensure TRAIN category exists
+        if (!context.CodiciCategoria.Any(c => c.Codice == "TRAIN"))
+        {
+            context.CodiciCategoria.Add(new CodiceCategoria
+            {
+                Codice = "TRAIN",
+                Descrizione = "Formazione",
+                CoeffA = 1.0m,
+                CoeffB = 1.0m,
+                CoeffS = 1.0m
+            });
+            context.SaveChanges();
+        }
+
+        // Apps
+        if (!context.Apps.Any())
+        {
+            var apps = new List<App>
+            {
+                new() { Code = "warehouse", Name = "Magazzino", Icon = "Warehouse", BasePrice = 100, RoutePath = "/warehouse", SortOrder = 10, Description = "Gestione completa del magazzino" },
+                new() { Code = "purchases", Name = "Acquisti", Icon = "ShoppingCart", BasePrice = 80, RoutePath = "/purchases", SortOrder = 20, Description = "Gestione ciclo passivo e fornitori" },
+                new() { Code = "sales", Name = "Vendite", Icon = "PointOfSale", BasePrice = 80, RoutePath = "/sales", SortOrder = 30, Description = "Gestione ciclo attivo e clienti" },
+                new() { Code = "production", Name = "Produzione", Icon = "Factory", BasePrice = 150, RoutePath = "/production", SortOrder = 40, Description = "Gestione della produzione e MRP" },
+                new() { Code = "events", Name = "Eventi", Icon = "Event", BasePrice = 120, RoutePath = "/events", SortOrder = 50, Description = "Gestione eventi e catering" },
+                new() { Code = "hr", Name = "Personale", Icon = "People", BasePrice = 60, RoutePath = "/hr", SortOrder = 60, Description = "Gestione risorse umane" },
+                new() { Code = "communications", Name = "Comunicazioni", Icon = "Email", BasePrice = 40, RoutePath = "/communications", SortOrder = 70, Description = "Gestione email e comunicazioni" },
+                new() { Code = "report-designer", Name = "Report Designer", Icon = "Print", BasePrice = 50, RoutePath = "/report-designer", SortOrder = 80, Description = "Editor di report personalizzati" },
+                new() { Code = "training", Name = "Formazione", Icon = "School", BasePrice = 50, RoutePath = "/training", SortOrder = 90, Description = "Gestione corsi e scadenze formazione" }
+            };
+            context.Apps.AddRange(apps);
+            context.SaveChanges();
+
+            // Auto-subscribe all for demo/dev
+            foreach (var app in apps)
+            {
+                context.AppSubscriptions.Add(new AppSubscription
+                {
+                    AppId = app.Id,
+                    IsEnabled = true,
+                    StartDate = DateTime.UtcNow,
+                    EndDate = DateTime.UtcNow.AddYears(1),
+                    SubscriptionType = SubscriptionType.Annual,
+                    AutoRenew = true,
+                    PaidPrice = app.BasePrice
+                });
+            }
+            context.SaveChanges();
+        }
+        else
+        {
+            // Ensure Training exists if apps already seeded
+            if (!context.Apps.Any(a => a.Code == "training"))
+            {
+                var trainingApp = new App { Code = "training", Name = "Formazione", Icon = "School", BasePrice = 50, RoutePath = "/training", SortOrder = 90, Description = "Gestione corsi e scadenze formazione" };
+                context.Apps.Add(trainingApp);
+                context.SaveChanges();
+                
+                context.AppSubscriptions.Add(new AppSubscription
+                {
+                    AppId = trainingApp.Id,
+                    IsEnabled = true,
+                    StartDate = DateTime.UtcNow,
+                    EndDate = DateTime.UtcNow.AddYears(1),
+                    SubscriptionType = SubscriptionType.Annual,
+                    AutoRenew = true,
+                    PaidPrice = trainingApp.BasePrice
+                });
+                context.SaveChanges();
+            }
+        }
+    }
 }

src/backend/Zentral.Infrastructure/Data/ZentralDbContext.cs

@@ -5,6 +5,7 @@ using Zentral.Domain.Entities.Sales;
 using Zentral.Domain.Entities.Production;
 using Zentral.Domain.Entities.HR;
 using Zentral.Domain.Entities.Communications;
+using Zentral.Domain.Entities.Training;
 using Microsoft.EntityFrameworkCore;
 
 namespace Zentral.Infrastructure.Data;
@@ -99,6 +100,10 @@ public class ZentralDbContext : DbContext
     // Communications module entities
     public DbSet<EmailLog> EmailLogs => Set<EmailLog>();
 
+    // Training module entities
+    public DbSet<ClienteContatto> Contatti => Set<ClienteContatto>();
+    public DbSet<TrainingRecord> TrainingRecords => Set<TrainingRecord>();
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         base.OnModelCreating(modelBuilder);
@@ -393,6 +398,35 @@ public class ZentralDbContext : DbContext
             entity.HasIndex(e => e.EntityName);
         });
 
+
+
+        // ClienteContatto
+        modelBuilder.Entity<ClienteContatto>(entity =>
+        {
+            entity.ToTable("ClienteContatti");
+            
+            entity.HasOne(e => e.Cliente)
+                .WithMany(c => c.Contatti)
+                .HasForeignKey(e => e.ClienteId)
+                .OnDelete(DeleteBehavior.Cascade);
+        });
+
+        // TrainingRecord
+        modelBuilder.Entity<TrainingRecord>(entity =>
+        {
+            entity.ToTable("TrainingRecords");
+
+            entity.HasOne(e => e.ClienteContatto)
+                .WithMany()
+                .HasForeignKey(e => e.ClienteContattoId)
+                .OnDelete(DeleteBehavior.Cascade);
+
+            entity.HasOne(e => e.Articolo)
+                .WithMany()
+                .HasForeignKey(e => e.ArticoloId)
+                .OnDelete(DeleteBehavior.Restrict);
+        });
+
         // ===============================================
         // WAREHOUSE MODULE ENTITIES
         // ===============================================
@@ -445,6 +479,7 @@ public class ZentralDbContext : DbContext
                 .WithMany(c => c.Articles)
                 .HasForeignKey(e => e.CategoryId)
                 .OnDelete(DeleteBehavior.SetNull);
+
         });
 
         // ArticleBatch

src/backend/Zentral.Infrastructure/Migrations/20251212115332_AddWarehouseProductGroups.cs

@@ -0,0 +1,86 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Zentral.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddWarehouseProductGroups : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "ProductGroupId",
+                table: "WarehouseArticles",
+                type: "INTEGER",
+                nullable: true);
+
+            migrationBuilder.CreateTable(
+                name: "WarehouseProductGroups",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Code = table.Column<string>(type: "TEXT", nullable: false),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Description = table.Column<string>(type: "TEXT", nullable: true),
+                    IsActive = table.Column<bool>(type: "INTEGER", nullable: false),
+                    Notes = table.Column<string>(type: "TEXT", nullable: true),
+                    CreatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    CreatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    UpdatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    UpdatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    CustomFieldsJson = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_WarehouseProductGroups", x => x.Id);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseArticles_ProductGroupId",
+                table: "WarehouseArticles",
+                column: "ProductGroupId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseProductGroups_Code",
+                table: "WarehouseProductGroups",
+                column: "Code",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseProductGroups_IsActive",
+                table: "WarehouseProductGroups",
+                column: "IsActive");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_WarehouseArticles_WarehouseProductGroups_ProductGroupId",
+                table: "WarehouseArticles",
+                column: "ProductGroupId",
+                principalTable: "WarehouseProductGroups",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.SetNull);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_WarehouseArticles_WarehouseProductGroups_ProductGroupId",
+                table: "WarehouseArticles");
+
+            migrationBuilder.DropTable(
+                name: "WarehouseProductGroups");
+
+            migrationBuilder.DropIndex(
+                name: "IX_WarehouseArticles_ProductGroupId",
+                table: "WarehouseArticles");
+
+            migrationBuilder.DropColumn(
+                name: "ProductGroupId",
+                table: "WarehouseArticles");
+        }
+    }
+}

src/backend/Zentral.Infrastructure/Migrations/20251212122107_RemoveWarehouseProductGroups.cs

@@ -0,0 +1,76 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Zentral.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class RemoveWarehouseProductGroups : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_WarehouseArticles_WarehouseProductGroups_ProductGroupId",
+                table: "WarehouseArticles");
+
+            migrationBuilder.DropTable(
+                name: "WarehouseProductGroups");
+
+            migrationBuilder.DropIndex(
+                name: "IX_WarehouseArticles_ProductGroupId",
+                table: "WarehouseArticles");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "WarehouseProductGroups",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Code = table.Column<string>(type: "TEXT", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    CreatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    CustomFieldsJson = table.Column<string>(type: "TEXT", nullable: true),
+                    Description = table.Column<string>(type: "TEXT", nullable: true),
+                    IsActive = table.Column<bool>(type: "INTEGER", nullable: false),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Notes = table.Column<string>(type: "TEXT", nullable: true),
+                    UpdatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    UpdatedBy = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_WarehouseProductGroups", x => x.Id);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseArticles_ProductGroupId",
+                table: "WarehouseArticles",
+                column: "ProductGroupId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseProductGroups_Code",
+                table: "WarehouseProductGroups",
+                column: "Code",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_WarehouseProductGroups_IsActive",
+                table: "WarehouseProductGroups",
+                column: "IsActive");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_WarehouseArticles_WarehouseProductGroups_ProductGroupId",
+                table: "WarehouseArticles",
+                column: "ProductGroupId",
+                principalTable: "WarehouseProductGroups",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.SetNull);
+        }
+    }
+}

src/backend/Zentral.Infrastructure/Migrations/20251212143625_AddTrainingModule.cs

@@ -0,0 +1,114 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Zentral.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTrainingModule : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "GiorniValidita",
+                table: "Articoli",
+                type: "INTEGER",
+                nullable: true);
+
+            migrationBuilder.CreateTable(
+                name: "ClienteContatti",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Nome = table.Column<string>(type: "TEXT", nullable: false),
+                    Cognome = table.Column<string>(type: "TEXT", nullable: false),
+                    Email = table.Column<string>(type: "TEXT", nullable: true),
+                    Ruolo = table.Column<string>(type: "TEXT", nullable: true),
+                    Telefono = table.Column<string>(type: "TEXT", nullable: true),
+                    ClienteId = table.Column<int>(type: "INTEGER", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    CreatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    UpdatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    UpdatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    CustomFieldsJson = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ClienteContatti", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ClienteContatti_Clienti_ClienteId",
+                        column: x => x.ClienteId,
+                        principalTable: "Clienti",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "TrainingRecords",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    ClienteContattoId = table.Column<int>(type: "INTEGER", nullable: false),
+                    ArticoloId = table.Column<int>(type: "INTEGER", nullable: false),
+                    DataEsecuzione = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    DataScadenza = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    AttestatoUrl = table.Column<string>(type: "TEXT", nullable: true),
+                    Note = table.Column<string>(type: "TEXT", nullable: true),
+                    CreatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    CreatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    UpdatedAt = table.Column<DateTime>(type: "TEXT", nullable: true),
+                    UpdatedBy = table.Column<string>(type: "TEXT", nullable: true),
+                    CustomFieldsJson = table.Column<string>(type: "TEXT", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_TrainingRecords", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_TrainingRecords_Articoli_ArticoloId",
+                        column: x => x.ArticoloId,
+                        principalTable: "Articoli",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_TrainingRecords_ClienteContatti_ClienteContattoId",
+                        column: x => x.ClienteContattoId,
+                        principalTable: "ClienteContatti",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ClienteContatti_ClienteId",
+                table: "ClienteContatti",
+                column: "ClienteId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_TrainingRecords_ArticoloId",
+                table: "TrainingRecords",
+                column: "ArticoloId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_TrainingRecords_ClienteContattoId",
+                table: "TrainingRecords",
+                column: "ClienteContattoId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "TrainingRecords");
+
+            migrationBuilder.DropTable(
+                name: "ClienteContatti");
+
+            migrationBuilder.DropColumn(
+                name: "GiorniValidita",
+                table: "Articoli");
+        }
+    }
+}

src/backend/Zentral.Infrastructure/Migrations/20251212170220_AddTipoArticolo.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Zentral.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTipoArticolo : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "Tipo",
+                table: "Articoli",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Tipo",
+                table: "Articoli");
+        }
+    }
+}

src/backend/Zentral.Infrastructure/Migrations/ZentralDbContextModelSnapshot.cs

@@ -174,6 +174,9 @@ namespace Zentral.Infrastructure.Migrations
                         .IsRequired()
                         .HasColumnType("TEXT");
 
+                    b.Property<int?>("GiorniValidita")
+                        .HasColumnType("INTEGER");
+
                     b.Property<byte[]>("Immagine")
                         .HasColumnType("BLOB");
 
@@ -195,6 +198,9 @@ namespace Zentral.Infrastructure.Migrations
                     b.Property<decimal?>("QtaStdS")
                         .HasColumnType("TEXT");
 
+                    b.Property<int>("Tipo")
+                        .HasColumnType("INTEGER");
+
                     b.Property<int?>("TipoMaterialeId")
                         .HasColumnType("INTEGER");
 
@@ -372,6 +378,54 @@ namespace Zentral.Infrastructure.Migrations
                     b.ToTable("Clienti");
                 });
 
+            modelBuilder.Entity("Zentral.Domain.Entities.ClienteContatto", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ClienteId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Cognome")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime?>("CreatedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CustomFieldsJson")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Email")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Nome")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Ruolo")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Telefono")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UpdatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClienteId");
+
+                    b.ToTable("ClienteContatti", (string)null);
+                });
+
             modelBuilder.Entity("Zentral.Domain.Entities.CodiceCategoria", b =>
                 {
                     b.Property<int>("Id")
@@ -2595,6 +2649,54 @@ namespace Zentral.Infrastructure.Migrations
                     b.ToTable("TipiRisorsa");
                 });
 
+            modelBuilder.Entity("Zentral.Domain.Entities.Training.TrainingRecord", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ArticoloId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AttestatoUrl")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("ClienteContattoId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime?>("CreatedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("CustomFieldsJson")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("DataEsecuzione")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime?>("DataScadenza")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Note")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UpdatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ArticoloId");
+
+                    b.HasIndex("ClienteContattoId");
+
+                    b.ToTable("TrainingRecords", (string)null);
+                });
+
             modelBuilder.Entity("Zentral.Domain.Entities.UserDashboardPreference", b =>
                 {
                     b.Property<int>("Id")
@@ -3675,6 +3777,9 @@ namespace Zentral.Infrastructure.Migrations
                     b.Property<string>("Notes")
                         .HasColumnType("TEXT");
 
+                    b.Property<int?>("ProductGroupId")
+                        .HasColumnType("INTEGER");
+
                     b.Property<decimal?>("ReorderPoint")
                         .HasPrecision(18, 4)
                         .HasColumnType("TEXT");
@@ -3921,6 +4026,17 @@ namespace Zentral.Infrastructure.Migrations
                     b.Navigation("TipoMateriale");
                 });
 
+            modelBuilder.Entity("Zentral.Domain.Entities.ClienteContatto", b =>
+                {
+                    b.HasOne("Zentral.Domain.Entities.Cliente", "Cliente")
+                        .WithMany("Contatti")
+                        .HasForeignKey("ClienteId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Cliente");
+                });
+
             modelBuilder.Entity("Zentral.Domain.Entities.Evento", b =>
                 {
                     b.HasOne("Zentral.Domain.Entities.Cliente", "Cliente")
@@ -4303,6 +4419,25 @@ namespace Zentral.Infrastructure.Migrations
                     b.Navigation("TipoPasto");
                 });
 
+            modelBuilder.Entity("Zentral.Domain.Entities.Training.TrainingRecord", b =>
+                {
+                    b.HasOne("Zentral.Domain.Entities.Articolo", "Articolo")
+                        .WithMany()
+                        .HasForeignKey("ArticoloId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("Zentral.Domain.Entities.ClienteContatto", "ClienteContatto")
+                        .WithMany()
+                        .HasForeignKey("ClienteContattoId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Articolo");
+
+                    b.Navigation("ClienteContatto");
+                });
+
             modelBuilder.Entity("Zentral.Domain.Entities.UserDashboardPreference", b =>
                 {
                     b.HasOne("Zentral.Domain.Entities.Utente", "Utente")
@@ -4585,6 +4720,8 @@ namespace Zentral.Infrastructure.Migrations
 
             modelBuilder.Entity("Zentral.Domain.Entities.Cliente", b =>
                 {
+                    b.Navigation("Contatti");
+
                     b.Navigation("Eventi");
 
                     b.Navigation("SalesOrders");

src/frontend/public/locales/en/translation.json

@@ -65,7 +65,8 @@
     "emailConfig": "Email Configuration",
     "movements": "Movements",
     "stock": "Stock",
-    "inventory": "Inventory"
+    "inventory": "Inventory",
+    "categories": "Categories"
   },
   "navigation": {
     "searchPlaceholder": "Search...",
@@ -285,12 +286,33 @@
     "confermato": "Confirmed"
   },
   "apps": {
+    "core": {
+      "title": "Zentral"
+    },
     "warehouse": {
       "title": "Warehouse Management",
       "inventory": "Inventory",
       "movements": "Movements",
       "stock": "Stock",
-      "categories": "Categories"
+      "categories": {
+        "title": "Article Categories",
+        "new": "New Category",
+        "edit": "Edit Category",
+        "empty": "No categories found",
+        "newParams": {
+          "root": "New Root Category"
+        },
+        "fields": {
+          "name": "Name",
+          "description": "Description",
+          "sortOrder": "Sort Order",
+          "active": "Active"
+        },
+        "deleteDialog": {
+          "title": "Delete Confirmation",
+          "content": "Are you sure you want to delete this category? This operation cannot be undone. If the category contains subcategories or articles, it may not be possible to delete it."
+        }
+      }
     },
     "hr": {
       "title": "Human Resources",
@@ -300,6 +322,12 @@
       "pagamenti": "Payments",
       "rimborsi": "Reimbursements"
     },
+    "training": {
+      "title": "Training Management",
+      "dashboard": "Dashboard",
+      "matrix": "Matrix",
+      "registry": "Course Registry"
+    },
     "admin": {
       "title": "App Management",
       "subtitle": "Configure active apps and manage subscriptions",
@@ -400,6 +428,14 @@
         "4": "Expense reports and reimbursements",
         "5": "Personnel cost analysis"
       },
+      "training": {
+        "0": "Course registry management",
+        "1": "Participant registry",
+        "2": "Expiry and renewal monitoring",
+        "3": "Certificate archiving",
+        "4": "Competence matrix",
+        "5": "Automatic expiry notifications"
+      },
       "default": "Complete app features"
     }
   },
@@ -1552,5 +1588,56 @@
       "permesso": "Permit",
       "altro": "Other"
     }
+  },
+  "communications": {
+    "settings": {
+      "title": "Email Configuration",
+      "fields": {
+        "provider": "Provider",
+        "host": "SMTP Host",
+        "port": "Port",
+        "user": "Username",
+        "password": "Password",
+        "ssl": "Enable SSL/TLS",
+        "apiKey": "Resend API Key",
+        "fromEmail": "From Email",
+        "fromName": "From Name"
+      },
+      "helpers": {
+        "apiKey": "Get your API Key at"
+      },
+      "sections": {
+        "defaultSender": "Default Sender"
+      },
+      "actions": {
+        "testConnection": "Test Connection",
+        "sendTest": "Send Test"
+      },
+      "testStats": {
+        "title": "Test Email",
+        "recipient": "Recipient",
+        "subject": "Subject"
+      },
+      "messages": {
+        "loadError": "Error loading configuration",
+        "saveSuccess": "Configuration saved successfully",
+        "saveError": "Error saving configuration",
+        "recipientRequired": "Recipient email is required for test",
+        "testSuccess": "Test email sent successfully",
+        "testError": "Error sending test email"
+      }
+    },
+    "logs": {
+      "title": "Email Logs",
+      "columns": {
+        "id": "ID",
+        "date": "Date",
+        "status": "Status",
+        "sender": "Sender",
+        "recipient": "Recipient",
+        "subject": "Subject",
+        "error": "Error"
+      }
+    }
   }
 }

src/frontend/public/locales/it/translation.json

@@ -30,7 +30,8 @@
     "preview": "Anteprima",
     "none": "Nessuno",
     "view": "Dettaglio",
-    "copy": "Copia"
+    "copy": "Copia",
+    "category": "Categoria"
   },
   "menu": {
     "dashboard": "Dashboard",
@@ -61,7 +62,9 @@
     "emailConfig": "Configurazione Email",
     "movements": "Movimenti",
     "stock": "Giacenze",
-    "inventory": "Inventario"
+    "inventory": "Inventario",
+    "categories": "Categorie",
+    "training": "Formazione"
   },
   "navigation": {
     "searchPlaceholder": "Cerca...",
@@ -208,6 +211,10 @@
     "pec": "PEC",
     "fiscalCode": "Codice Fiscale",
     "recipientCode": "Codice Destinatario",
+    "contacts": "Contatti",
+    "newContact": "Nuovo Contatto",
+    "editContact": "Modifica Contatto",
+    "role": "Ruolo",
     "generatedOnSave": "(Generato al salvataggio)",
     "autoGenerated": "Generato automaticamente",
     "willBeAssigned": "Verrà assegnato automaticamente",
@@ -281,12 +288,33 @@
     "confermato": "Confermato"
   },
   "apps": {
+    "core": {
+      "title": "Zentral"
+    },
     "warehouse": {
       "title": "Gestione Magazzino",
       "inventory": "Inventario",
       "movements": "Movimenti",
       "stock": "Giacenze",
-      "categories": "Categorie"
+      "categories": {
+        "title": "Categorie Articoli",
+        "new": "Nuova Categoria",
+        "edit": "Modifica Categoria",
+        "empty": "Nessuna categoria trovata",
+        "newParams": {
+          "root": "Nuova Categoria Root"
+        },
+        "fields": {
+          "name": "Nome",
+          "description": "Descrizione",
+          "sortOrder": "Ordinamento",
+          "active": "Attivo"
+        },
+        "deleteDialog": {
+          "title": "Conferma Eliminazione",
+          "content": "Sei sicuro di voler eliminare questa categoria? L'operazione non può essere annullata. Se la categoria contiene sottocategorie o articoli, potrebbe non essere possibile eliminarla."
+        }
+      }
     },
     "hr": {
       "title": "Gestione Personale",
@@ -296,6 +324,12 @@
       "pagamenti": "Pagamenti",
       "rimborsi": "Rimborsi"
     },
+    "training": {
+      "title": "Gestione Formazione",
+      "dashboard": "Dashboard",
+      "matrix": "Matrice",
+      "registry": "Anagrafica Corsi"
+    },
     "admin": {
       "title": "Gestione Applicazioni",
       "subtitle": "Configura le applicazioni attive e gestisci le subscription",
@@ -397,6 +431,14 @@
         "4": "Note spese e rimborsi",
         "5": "Analisi costi personale"
       },
+      "training": {
+        "0": "Gestione anagrafica corsi",
+        "1": "Registro partecipanti",
+        "2": "Monitoraggio scadenze e rinnovi",
+        "3": "Archiviazione attestati",
+        "4": "Matrice competenze",
+        "5": "Notifiche automatiche scadenze"
+      },
       "default": "Funzionalità complete dell'applicazione"
     }
   },
@@ -1633,5 +1675,83 @@
       "permesso": "Permesso",
       "altro": "Altro"
     }
+  },
+  "communications": {
+    "settings": {
+      "title": "Configurazione Email",
+      "fields": {
+        "provider": "Provider",
+        "host": "SMTP Host",
+        "port": "Porta",
+        "user": "Username",
+        "password": "Password",
+        "ssl": "Abilita SSL/TLS",
+        "apiKey": "Resend API Key",
+        "fromEmail": "Email Mittente",
+        "fromName": "Nome Mittente"
+      },
+      "helpers": {
+        "apiKey": "Ottieni la tua API Key su"
+      },
+      "sections": {
+        "defaultSender": "Mittente Default"
+      },
+      "actions": {
+        "testConnection": "Test Connessione",
+        "sendTest": "Invia Test"
+      },
+      "testStats": {
+        "title": "Test Email",
+        "recipient": "Destinatario",
+        "subject": "Oggetto"
+      },
+      "messages": {
+        "loadError": "Errore nel caricamento configurazione",
+        "saveSuccess": "Configurazione salvata con successo",
+        "saveError": "Errore nel salvataggio configurazione",
+        "recipientRequired": "Email destinatario obbligatoria per il test",
+        "testSuccess": "Email di test inviata con successo",
+        "testError": "Errore nell'invio email di test"
+      }
+    },
+    "logs": {
+      "title": "Log Email",
+      "columns": {
+        "id": "ID",
+        "date": "Data",
+        "status": "Stato",
+        "sender": "Mittente",
+        "recipient": "Destinatario",
+        "subject": "Oggetto",
+        "error": "Errore"
+      }
+    }
+  },
+  "training": {
+    "title": "Formazione",
+    "dashboard": "Dashboard",
+    "courses": "Corsi",
+    "registry": "Anagrafica Corsi",
+    "matrix": "Matrice Formazione",
+    "expiring": "In Scadenza",
+    "expired": "Scaduti",
+    "valid": "Valido",
+    "validityDays": "Giorni Validità",
+    "newTraining": "Nuova Formazione",
+    "recordDate": "Data Corso",
+    "expirationDate": "Data Scadenza",
+    "certificate": "Attestato",
+    "upload": "Carica",
+    "download": "Scarica",
+    "status": "Stato",
+    "participant": "Partecipante",
+    "course": "Corso",
+    "deleteConfirm": "Eliminare questa formazione?",
+    "daysRemaining": "Giorni rimanenti",
+    "expiringIn": "Scade tra {{days}} giorni",
+    "sendNotification": "Invia Notifica",
+    "notificationSent": "Notifica inviata con successo",
+    "editCourse": "Modifica Corso",
+    "editTraining": "Modifica Formazione"
   }
 }

src/frontend/src/App.tsx

@@ -20,6 +20,7 @@ import ProductionRoutes from "./apps/production/routes";
 import EventsRoutes from "./apps/events/routes";
 import HRRoutes from "./apps/hr/routes";
 import CommunicationsRoutes from "./apps/communications/routes";
+import TrainingRoutes from "./apps/training/routes";
 import { AppGuard } from "./components/AppGuard";
 import { useRealTimeUpdates } from "./hooks/useRealTimeUpdates";
 import { CollaborationProvider } from "./contexts/CollaborationContext";
@@ -150,6 +151,15 @@ function App() {
                             </AppGuard>
                           }
                         />
+                        {/* Training Module */}
+                        <Route
+                          path="training/*"
+                          element={
+                            <AppGuard appCode="training">
+                              <TrainingRoutes />
+                            </AppGuard>
+                          }
+                        />
                       </Route>
                     </Routes>
                   </TabProvider>

src/frontend/src/apps/communications/pages/LogsPage.tsx

@@ -1,4 +1,5 @@
 import React, { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { DataGrid, GridColDef } from '@mui/x-data-grid';
 import { Box, Typography } from '@mui/material';
 import { History } from '@mui/icons-material';
@@ -7,6 +8,7 @@ import { EmailLog } from '../types';
 import dayjs from 'dayjs';
 
 export default function LogsPage() {
+    const { t } = useTranslation();
     const [logs, setLogs] = useState<EmailLog[]>([]);
     const [loading, setLoading] = useState(false);
 
@@ -27,13 +29,13 @@ export default function LogsPage() {
     };
 
     const columns: GridColDef[] = [
-        { field: 'id', headerName: 'ID', width: 70 },
+        { field: 'id', headerName: t('communications.logs.columns.id'), width: 70 },
         {
-            field: 'sentDate', headerName: 'Data', width: 180,
+            field: 'sentDate', headerName: t('communications.logs.columns.date'), width: 180,
             valueFormatter: (params) => dayjs(params.value).format('DD/MM/YYYY HH:mm')
         },
         {
-            field: 'status', headerName: 'Stato', width: 120,
+            field: 'status', headerName: t('communications.logs.columns.status'), width: 120,
             renderCell: (params) => (
                 <span style={{
                     color: params.value === 'Success' ? 'green' : 'red',
@@ -43,16 +45,16 @@ export default function LogsPage() {
                 </span>
             )
         },
-        { field: 'sender', headerName: 'Mittente', width: 200 },
+        { field: 'sender', headerName: t('communications.logs.columns.sender'), width: 200 },
-        { field: 'recipient', headerName: 'Destinatario', width: 200 },
+        { field: 'recipient', headerName: t('communications.logs.columns.recipient'), width: 200 },
-        { field: 'subject', headerName: 'Oggetto', flex: 1 },
+        { field: 'subject', headerName: t('communications.logs.columns.subject'), flex: 1 },
-        { field: 'errorMessage', headerName: 'Errore', width: 200 },
+        { field: 'errorMessage', headerName: t('communications.logs.columns.error'), width: 200 },
     ];
 
     return (
         <Box p={3} sx={{ height: '80vh', display: 'flex', flexDirection: 'column' }}>
             <Box display="flex" justifyContent="space-between" mb={2}>
-                <Typography variant="h4"><History /> Email Logs</Typography>
+                <Typography variant="h4"><History /> {t('communications.logs.title')}</Typography>
             </Box>
             <DataGrid
                 rows={logs}

src/frontend/src/apps/communications/pages/SettingsPage.tsx

@@ -1,4 +1,5 @@
 import React, { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { useForm, Controller } from 'react-hook-form';
 import {
     Box, Paper, Typography, TextField, Button, Grid,
@@ -10,6 +11,7 @@ import { communicationsService } from '../services/communicationsService';
 import { SmtpConfig, TestEmail } from '../types';
 
 export default function SettingsPage() {
+    const { t } = useTranslation();
     const { control, handleSubmit, reset, watch } = useForm<SmtpConfig>();
     const provider = watch('provider') || 'smtp';
     const [loading, setLoading] = useState(false);
@@ -28,7 +30,7 @@ export default function SettingsPage() {
             reset(config);
         } catch (error) {
             console.error(error);
-            setNotification({ type: 'error', message: 'Failed to load configuration' });
+            setNotification({ type: 'error', message: t('communications.settings.messages.loadError') });
         } finally {
             setLoading(false);
         }
@@ -38,9 +40,9 @@ export default function SettingsPage() {
         try {
             setLoading(true);
             await communicationsService.saveConfig(data);
-            setNotification({ type: 'success', message: 'Configuration saved successfully' });
+            setNotification({ type: 'success', message: t('communications.settings.messages.saveSuccess') });
         } catch (error) {
-            setNotification({ type: 'error', message: 'Failed to save configuration' });
+            setNotification({ type: 'error', message: t('communications.settings.messages.saveError') });
         } finally {
             setLoading(false);
         }
@@ -48,16 +50,16 @@ export default function SettingsPage() {
 
     const sendTest = async () => {
         if (!testData.to) {
-            setNotification({ type: 'error', message: 'Recipient email is required for test' });
+            setNotification({ type: 'error', message: t('communications.settings.messages.recipientRequired') });
             return;
         }
         try {
             setLoading(true);
             await communicationsService.sendTestEmail(testData);
-            setNotification({ type: 'success', message: 'Test email queued successfully' });
+            setNotification({ type: 'success', message: t('communications.settings.messages.testSuccess') });
             setTestMode(false);
         } catch (error: any) {
-            setNotification({ type: 'error', message: error.response?.data?.message || 'Failed to send test email' });
+            setNotification({ type: 'error', message: error.response?.data?.message || t('communications.settings.messages.testError') });
         } finally {
             setLoading(false);
         }
@@ -66,7 +68,7 @@ export default function SettingsPage() {
     return (
         <Box p={3}>
             <Typography variant="h4" gutterBottom display="flex" alignItems="center" gap={2}>
-                <Email fontSize="large" color="primary" /> Configurazione Email
+                <Email fontSize="large" color="primary" /> {t('communications.settings.title')}
             </Typography>
 
             <Paper sx={{ p: 3, mb: 3 }}>
@@ -74,13 +76,13 @@ export default function SettingsPage() {
                     <Grid container spacing={3}>
                         <Grid item xs={12} md={4}>
                             <FormControl fullWidth>
-                                <InputLabel>Provider</InputLabel>
+                                <InputLabel>{t('communications.settings.fields.provider')}</InputLabel>
                                 <Controller
                                     name="provider"
                                     control={control}
                                     defaultValue="smtp"
                                     render={({ field }) => (
-                                        <Select {...field} label="Provider">
+                                        <Select {...field} label={t('communications.settings.fields.provider')}>
                                             <MenuItem value="smtp">SMTP</MenuItem>
                                             <MenuItem value="resend">Resend</MenuItem>
                                         </Select>
@@ -96,7 +98,7 @@ export default function SettingsPage() {
                                         name="host"
                                         control={control}
                                         defaultValue=""
-                                        render={({ field }) => <TextField {...field} label="SMTP Host" fullWidth required />}
+                                        render={({ field }) => <TextField {...field} label={t('communications.settings.fields.host')} fullWidth required />}
                                     />
                                 </Grid>
                                 <Grid item xs={12} md={4}>
@@ -104,7 +106,7 @@ export default function SettingsPage() {
                                         name="port"
                                         control={control}
                                         defaultValue={587}
-                                        render={({ field }) => <TextField {...field} label="Port" type="number" fullWidth required />}
+                                        render={({ field }) => <TextField {...field} label={t('communications.settings.fields.port')} type="number" fullWidth required />}
                                     />
                                 </Grid>
 
@@ -113,7 +115,7 @@ export default function SettingsPage() {
                                         name="user"
                                         control={control}
                                         defaultValue=""
-                                        render={({ field }) => <TextField {...field} label="Username" fullWidth />}
+                                        render={({ field }) => <TextField {...field} label={t('communications.settings.fields.user')} fullWidth />}
                                     />
                                 </Grid>
                                 <Grid item xs={12} md={6}>
@@ -121,7 +123,7 @@ export default function SettingsPage() {
                                         name="password"
                                         control={control}
                                         defaultValue=""
-                                        render={({ field }) => <TextField {...field} label="Password" type="password" fullWidth />}
+                                        render={({ field }) => <TextField {...field} label={t('communications.settings.fields.password')} type="password" fullWidth />}
                                     />
                                 </Grid>
 
@@ -133,7 +135,7 @@ export default function SettingsPage() {
                                         render={({ field: { onChange, value } }) => (
                                             <FormControlLabel
                                                 control={<Switch checked={value} onChange={onChange} />}
-                                                label="Enable SSL/TLS"
+                                                label={t('communications.settings.fields.ssl')}
                                             />
                                         )}
                                     />
@@ -147,17 +149,17 @@ export default function SettingsPage() {
                                     name="resendApiKey"
                                     control={control}
                                     defaultValue=""
-                                    render={({ field }) => <TextField {...field} label="Resend API Key" type="password" fullWidth required />}
+                                    render={({ field }) => <TextField {...field} label={t('communications.settings.fields.apiKey')} type="password" fullWidth required />}
                                 />
                                 <Typography variant="caption" color="textSecondary" sx={{ mt: 1, display: 'block' }}>
-                                    Ottieni la tua API Key su <a href="https://resend.com/api-keys" target="_blank" rel="noopener noreferrer">resend.com</a>
+                                    {t('communications.settings.helpers.apiKey')} <a href="https://resend.com/api-keys" target="_blank" rel="noopener noreferrer">resend.com</a>
                                 </Typography>
                             </Grid>
                         )}
 
                         <Grid item xs={12}>
                             <Divider sx={{ my: 2 }} />
-                            <Typography variant="h6">Mittente Default</Typography>
+                            <Typography variant="h6">{t('communications.settings.sections.defaultSender')}</Typography>
                         </Grid>
 
                         <Grid item xs={12} md={6}>
@@ -165,7 +167,7 @@ export default function SettingsPage() {
                                 name="fromEmail"
                                 control={control}
                                 defaultValue=""
-                                render={({ field }) => <TextField {...field} label="From Email" fullWidth required />}
+                                render={({ field }) => <TextField {...field} label={t('communications.settings.fields.fromEmail')} fullWidth required />}
                             />
                         </Grid>
                         <Grid item xs={12} md={6}>
@@ -173,7 +175,7 @@ export default function SettingsPage() {
                                 name="fromName"
                                 control={control}
                                 defaultValue=""
-                                render={({ field }) => <TextField {...field} label="From Name" fullWidth />}
+                                render={({ field }) => <TextField {...field} label={t('communications.settings.fields.fromName')} fullWidth />}
                             />
                         </Grid>
 
@@ -183,7 +185,7 @@ export default function SettingsPage() {
                                 startIcon={<Send />}
                                 onClick={() => setTestMode(!testMode)}
                             >
-                                Test Connessione
+                                {t('communications.settings.actions.testConnection')}
                             </Button>
                             <Button
                                 type="submit"
@@ -191,7 +193,7 @@ export default function SettingsPage() {
                                 startIcon={<Save />}
                                 disabled={loading}
                             >
-                                Salva Configurazione
+                                {t('common.save')}
                             </Button>
                         </Grid>
                     </Grid>
@@ -200,11 +202,11 @@ export default function SettingsPage() {
 
             {testMode && (
                 <Paper sx={{ p: 3, bgcolor: '#f5f5f5' }}>
-                    <Typography variant="h6" gutterBottom>Test Email</Typography>
+                    <Typography variant="h6" gutterBottom>{t('communications.settings.testStats.title')}</Typography>
                     <Grid container spacing={2}>
                         <Grid item xs={12} md={6}>
                             <TextField
-                                label="Destinatario"
+                                label={t('communications.settings.testStats.recipient')}
                                 fullWidth
                                 value={testData.to}
                                 onChange={(e) => setTestData({ ...testData, to: e.target.value })}
@@ -212,7 +214,7 @@ export default function SettingsPage() {
                         </Grid>
                         <Grid item xs={12} md={6}>
                             <TextField
-                                label="Oggetto"
+                                label={t('communications.settings.testStats.subject')}
                                 fullWidth
                                 value={testData.subject}
                                 onChange={(e) => setTestData({ ...testData, subject: e.target.value })}
@@ -220,7 +222,7 @@ export default function SettingsPage() {
                         </Grid>
                         <Grid item xs={12}>
                             <Button variant="contained" color="secondary" onClick={sendTest} disabled={loading}>
-                                Invia Test
+                                {t('communications.settings.actions.sendTest')}
                             </Button>
                         </Grid>
                     </Grid>

src/frontend/src/apps/sales/pages/ClientiPage.tsx

@@ -11,7 +11,8 @@ import {
   DialogContent,
   DialogActions,
   TextField,
-
+  Tabs,
+  Tab,
 } from "@mui/material";
 import { DataGrid, GridColDef } from "@mui/x-data-grid";
 import {
@@ -21,10 +22,167 @@ import {
 } from "@mui/icons-material";
 import { useTranslation } from "react-i18next";
 import { clientiService } from "../../../services/lookupService";
-import { Cliente } from "../../../types";
+import { Cliente, ClienteContatto } from "../../../types";
 import { CustomFieldsRenderer } from "../../../components/customFields/CustomFieldsRenderer";
 import { CustomFieldValues } from "../../../types/customFields";
 
+function ContactsManager({ clienteId }: { clienteId: number }) {
+  const { t } = useTranslation();
+  const queryClient = useQueryClient();
+  const [openDialog, setOpenDialog] = useState(false);
+  const [editingId, setEditingId] = useState<number | null>(null);
+  const [formData, setFormData] = useState<Partial<ClienteContatto>>({});
+
+  const { data: contatti = [], isLoading } = useQuery({
+    queryKey: ["clienti", clienteId, "contatti"],
+    queryFn: () => clientiService.getContatti(clienteId),
+  });
+
+  const createMutation = useMutation({
+    mutationFn: (data: Partial<ClienteContatto>) =>
+      clientiService.createContatto(clienteId, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["clienti", clienteId, "contatti"] });
+      handleCloseDialog();
+    },
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: ({ id, data }: { id: number; data: Partial<ClienteContatto> }) =>
+      clientiService.updateContatto(clienteId, id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["clienti", clienteId, "contatti"] });
+      handleCloseDialog();
+    },
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (id: number) => clientiService.deleteContatto(clienteId, id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["clienti", clienteId, "contatti"] });
+    },
+  });
+
+  const handleCloseDialog = () => {
+    setOpenDialog(false);
+    setEditingId(null);
+    setFormData({});
+  };
+
+  const handleEdit = (contatto: ClienteContatto) => {
+    setFormData(contatto);
+    setEditingId(contatto.id);
+    setOpenDialog(true);
+  };
+
+  const handleSubmit = () => {
+    if (editingId) {
+      updateMutation.mutate({ id: editingId, data: formData });
+    } else {
+      createMutation.mutate({ ...formData, clienteId });
+    }
+  };
+
+  const columns: GridColDef[] = [
+    { field: "nome", headerName: t("common.name"), flex: 1 },
+    { field: "cognome", headerName: t("common.surname"), flex: 1 },
+    { field: "ruolo", headerName: t("clients.role"), flex: 1 },
+    { field: "email", headerName: t("clients.email"), flex: 1 },
+    { field: "telefono", headerName: t("clients.phone"), flex: 1 },
+    {
+      field: "actions",
+      headerName: t("common.actions"),
+      width: 120,
+      renderCell: (params) => (
+        <Box>
+          <IconButton size="small" onClick={() => handleEdit(params.row)}>
+            <EditIcon />
+          </IconButton>
+          <IconButton
+            size="small"
+            color="error"
+            onClick={() => {
+              if (confirm(t("common.deleteConfirm"))) {
+                deleteMutation.mutate(params.row.id);
+              }
+            }}
+          >
+            <DeleteIcon />
+          </IconButton>
+        </Box>
+      ),
+    },
+  ];
+
+  return (
+    <Box>
+      <Box display="flex" justifyContent="flex-end" mb={2}>
+        <Button startIcon={<AddIcon />} variant="contained" onClick={() => setOpenDialog(true)}>
+          {t("clients.newContact")}
+        </Button>
+      </Box>
+      <Paper sx={{ height: 400, width: "100%" }}>
+        <DataGrid
+          rows={contatti}
+          columns={columns}
+          loading={isLoading}
+          pageSizeOptions={[10, 25]}
+          initialState={{ pagination: { paginationModel: { pageSize: 10 } } }}
+          disableRowSelectionOnClick
+        />
+      </Paper>
+
+      <Dialog open={openDialog} onClose={handleCloseDialog} maxWidth="sm" fullWidth>
+        <DialogTitle>
+          {editingId ? t("clients.editContact") : t("clients.newContact")}
+        </DialogTitle>
+        <DialogContent>
+          <Box display="flex" flexDirection="column" gap={2} mt={1}>
+            <TextField
+              label={t("common.name")}
+              value={formData.nome || ""}
+              onChange={(e) => setFormData({ ...formData, nome: e.target.value })}
+              fullWidth
+              required
+            />
+            <TextField
+              label={t("common.surname")}
+              value={formData.cognome || ""}
+              onChange={(e) => setFormData({ ...formData, cognome: e.target.value })}
+              fullWidth
+              required
+            />
+            <TextField
+              label={t("clients.role")}
+              value={formData.ruolo || ""}
+              onChange={(e) => setFormData({ ...formData, ruolo: e.target.value })}
+              fullWidth
+            />
+            <TextField
+              label={t("clients.email")}
+              value={formData.email || ""}
+              onChange={(e) => setFormData({ ...formData, email: e.target.value })}
+              fullWidth
+            />
+            <TextField
+              label={t("clients.phone")}
+              value={formData.telefono || ""}
+              onChange={(e) => setFormData({ ...formData, telefono: e.target.value })}
+              fullWidth
+            />
+          </Box>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={handleCloseDialog}>{t("common.cancel")}</Button>
+          <Button variant="contained" onClick={handleSubmit}>
+            {t("common.save")}
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}
+
 export default function ClientiPage() {
   const queryClient = useQueryClient();
   const { t } = useTranslation();
@@ -32,6 +190,7 @@ export default function ClientiPage() {
   const [editingId, setEditingId] = useState<number | null>(null);
   const [formData, setFormData] = useState<Partial<Cliente>>({ attivo: true });
   const [customFields, setCustomFields] = useState<CustomFieldValues>({});
+  const [tabValue, setTabValue] = useState(0);
 
   const { data: clienti = [], isLoading } = useQuery({
     queryKey: ["clienti"],
@@ -65,6 +224,7 @@ export default function ClientiPage() {
     setEditingId(null);
     setFormData({ attivo: true });
     setCustomFields({});
+    setTabValue(0);
   };
 
   const handleEdit = (cliente: Cliente) => {
@@ -85,11 +245,9 @@ export default function ClientiPage() {
     };
 
     if (editingId) {
-      // In modifica, non inviamo il codice (non modificabile)
       const { codice: _codice, ...updateData } = dataWithCustomFields;
       updateMutation.mutate({ id: editingId, data: updateData });
     } else {
-      // In creazione, non inviamo il codice (generato automaticamente)
       const { codice: _codice, ...createData } = dataWithCustomFields;
       createMutation.mutate(createData);
     }
@@ -178,7 +336,15 @@ export default function ClientiPage() {
           {editingId ? t("clients.editClient") : t("clients.newClient")}
         </DialogTitle>
         <DialogContent>
+          <Tabs value={tabValue} onChange={(_, v) => setTabValue(v)} sx={{ mb: 2, borderBottom: 1, borderColor: "divider" }}>
+            <Tab label={t("common.details")} />
+            <Tab label={t("clients.contacts")} disabled={!editingId} />
+          </Tabs>
+
+          <Box role="tabpanel" hidden={tabValue !== 0}>
+            {tabValue === 0 && (
               <Box display="flex" flexWrap="wrap" gap={2} mt={1}>
+                {/* EXISTING FIELDS */}
                 <Box flexBasis={{ xs: '100%', md: '23%' }} flexGrow={1}>
                   <TextField
                     label={t("clients.code")}
@@ -358,12 +524,21 @@ export default function ClientiPage() {
                   />
                 </Box>
               </Box>
+            )}
+          </Box>
+
+          <Box role="tabpanel" hidden={tabValue !== 1}>
+            {tabValue === 1 && editingId && <ContactsManager clienteId={editingId} />}
+          </Box>
+
         </DialogContent>
         <DialogActions>
-          <Button onClick={handleCloseDialog}>{t("common.cancel")}</Button>
+          <Button onClick={handleCloseDialog}>{t("common.close")}</Button>
+          {tabValue === 0 && (
             <Button variant="contained" onClick={handleSubmit}>
               {editingId ? t("common.save") : t("common.create")}
             </Button>
+          )}
         </DialogActions>
       </Dialog>
     </Box>

src/frontend/src/apps/training/components/TrainingLayout.tsx

@@ -0,0 +1,13 @@
+import { Outlet } from "react-router-dom";
+import { Box } from "@mui/material";
+
+export default function TrainingLayout() {
+  return (
+    <Box sx={{ display: "flex", flexDirection: "column", height: "100%", p: 2 }}>
+      <Box sx={{ flex: 1, overflow: "hidden" }}>
+        <Outlet />
+      </Box>
+    </Box>
+  );
+}
+

src/frontend/src/apps/training/pages/DashboardPage.tsx

@@ -0,0 +1,112 @@
+import { useQuery, useMutation } from "@tanstack/react-query";
+import {
+  Box,
+  Typography,
+  Card,
+  CardContent,
+  Chip,
+  Paper,
+  Grid,
+  IconButton,
+  Tooltip
+} from "@mui/material";
+import { Send as SendIcon } from "@mui/icons-material";
+import { DataGrid, GridColDef } from "@mui/x-data-grid";
+import { useTranslation } from "react-i18next";
+import { trainingService } from "../services/trainingService";
+
+export default function DashboardPage() {
+  const { t } = useTranslation();
+
+  const { data: expiringRecords = [], isLoading } = useQuery({
+    queryKey: ["training", "expiring"],
+    queryFn: () => trainingService.getExpiring(),
+  });
+
+  const notifyMutation = useMutation({
+    mutationFn: (id: number) => trainingService.sendNotification(id),
+    onSuccess: () => {
+      alert(t("training.notificationSent"));
+    }
+  });
+
+  const expiredCount = expiringRecords.filter((r: any) => r.stato === 2).length;
+  const expiringCount = expiringRecords.filter((r: any) => r.stato === 1).length;
+
+  const columns: GridColDef[] = [
+    { field: "dataScadenza", headerName: t("training.expirationDate"), width: 120, valueFormatter: (params: any) => new Date(params.value).toLocaleDateString() },
+    { field: "course", headerName: t("training.course"), width: 200, valueGetter: (params: any) => params.row.articolo?.descrizione },
+    { field: "participant", headerName: t("training.participant"), width: 200, valueGetter: (params: any) => `${params.row.clienteContatto?.cognome} ${params.row.clienteContatto?.nome}` },
+    {
+      field: "stato",
+      headerName: t("training.status"),
+      width: 120,
+      renderCell: (params: any) => (
+        params.row.stato === 2
+          ? <Chip label={t("training.expired")} color="error" size="small" />
+          : <Chip label={t("training.expiring")} color="warning" size="small" />
+      )
+    },
+    {
+      field: "actions",
+      headerName: t("common.actions"),
+      width: 100,
+      renderCell: (params: any) => (
+        <Tooltip title={t("training.sendNotification")}>
+          <IconButton
+            size="small"
+            color="primary"
+            onClick={() => notifyMutation.mutate(params.row.id)}
+          >
+            <SendIcon />
+          </IconButton>
+        </Tooltip>
+      )
+    }
+  ];
+
+  return (
+    <Box p={2}>
+      <Typography variant="h4" mb={3}>{t("training.dashboard")}</Typography>
+
+      <Grid container spacing={3} mb={4}>
+        <Grid size={{ xs: 12, md: 6 }}>
+          <Card>
+            <CardContent>
+              <Typography color="textSecondary" gutterBottom>
+                {t("training.expired")}
+              </Typography>
+              <Typography variant="h3" color="error">
+                {expiredCount}
+              </Typography>
+            </CardContent>
+          </Card>
+        </Grid>
+        <Grid size={{ xs: 12, md: 6 }}>
+          <Card>
+            <CardContent>
+              <Typography color="textSecondary" gutterBottom>
+                {t("training.expiring")}
+              </Typography>
+              <Typography variant="h3" color="warning.main">
+                {expiringCount}
+              </Typography>
+            </CardContent>
+          </Card>
+        </Grid>
+      </Grid>
+
+      <Typography variant="h5" mb={2}>{t("training.expiring")}</Typography>
+      <Paper sx={{ height: 400, width: "100%" }}>
+        <DataGrid
+          rows={expiringRecords}
+          columns={columns}
+          loading={isLoading}
+          pageSizeOptions={[5, 10]}
+          initialState={{ pagination: { paginationModel: { pageSize: 5 } } }}
+          disableRowSelectionOnClick
+        />
+      </Paper>
+    </Box>
+  );
+}

src/frontend/src/apps/training/pages/MatrixPage.tsx

@@ -0,0 +1,319 @@
+import { useState } from "react";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import {
+  Box,
+  Typography,
+  Button,
+  Paper,
+  IconButton,
+  Dialog,
+  DialogTitle,
+  DialogContent,
+  DialogActions,
+  TextField,
+  MenuItem,
+  Chip,
+} from "@mui/material";
+import { DataGrid, GridColDef } from "@mui/x-data-grid";
+import {
+  Add as AddIcon,
+  Edit as EditIcon,
+  Delete as DeleteIcon,
+  UploadFile as UploadIcon,
+  Description as DescriptionIcon,
+} from "@mui/icons-material";
+import { useTranslation } from "react-i18next";
+import { trainingService } from "../services/trainingService";
+import { TrainingRecord, ClienteContatto, Articolo, TipoArticolo } from "../../../types";
+import { lookupService, articoliService, clientiService } from "../../../services/lookupService";
+
+export default function MatrixPage() {
+  const { t } = useTranslation();
+  const queryClient = useQueryClient();
+  const [openDialog, setOpenDialog] = useState(false);
+  const [editingId, setEditingId] = useState<number | null>(null);
+  const [formData, setFormData] = useState<Partial<TrainingRecord>>({});
+  const [selectedClient, setSelectedClient] = useState<number | null>(null);
+  const [fileToUpload, setFileToUpload] = useState<File | null>(null);
+
+  // Queries
+  const { data: records = [], isLoading } = useQuery({
+    queryKey: ["training", "records"],
+    queryFn: () => trainingService.getAll(),
+  });
+
+  const { data: customers = [] } = useQuery({
+    queryKey: ["lookup", "customers"],
+    queryFn: () => lookupService.getClienti(),
+  });
+
+  /* Removed unused trainingCategoryId logic */
+  const { data: courses = [] } = useQuery({
+    queryKey: ["articles", "training"],
+    queryFn: () => articoliService.getAll({ tipo: TipoArticolo.Corso }),
+  });
+
+  const { data: contacts = [] } = useQuery({
+    queryKey: ["contacts", selectedClient],
+    queryFn: () => selectedClient ? clientiService.getContatti(selectedClient) : [],
+    enabled: !!selectedClient,
+  });
+
+  // Mutations
+  const createMutation = useMutation({
+    mutationFn: async (data: Partial<TrainingRecord>) => {
+      const result = await trainingService.create(data);
+      if (fileToUpload) {
+        await trainingService.uploadCertificate(result.id, fileToUpload);
+      }
+      return result;
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["training", "records"] });
+      handleCloseDialog();
+    },
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: async ({ id, data }: { id: number; data: Partial<TrainingRecord> }) => {
+      await trainingService.update(id, data);
+      if (fileToUpload) {
+        await trainingService.uploadCertificate(id, fileToUpload);
+      }
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["training", "records"] });
+      handleCloseDialog();
+    },
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (id: number) => trainingService.delete(id),
+    onSuccess: () => queryClient.invalidateQueries({ queryKey: ["training", "records"] }),
+  });
+
+  const handleCloseDialog = () => {
+    setOpenDialog(false);
+    setEditingId(null);
+    setFormData({});
+    setSelectedClient(null);
+    setFileToUpload(null);
+  };
+
+  const handleEdit = (record: TrainingRecord) => {
+    setFormData(record);
+    setEditingId(record.id);
+
+    // Reverse lookup client from contact if possible?
+    // Not directly available in record unless included.
+    // Record has ClientContatto -> which has ClienteId (if included by backend).
+    // Assuming backend includes ClienteContatto.
+    if (record.clienteContatto) {
+      setSelectedClient(record.clienteContatto.clienteId);
+    }
+
+    setOpenDialog(true);
+  };
+
+  const handleSubmit = () => {
+    if (editingId) {
+      updateMutation.mutate({ id: editingId, data: formData });
+    } else {
+      createMutation.mutate(formData);
+    }
+  };
+
+  const getStatusChip = (status?: number) => {
+    if (status === 2) return <Chip label={t("training.expired")} color="error" size="small" />;
+    if (status === 1) return <Chip label={t("training.expiring")} color="warning" size="small" />;
+    return <Chip label={t("training.valid")} color="success" size="small" />;
+  };
+
+  const columns: GridColDef[] = [
+    {
+      field: "dataEsecuzione",
+      headerName: t("training.recordDate"),
+      width: 110,
+      valueFormatter: (params: any) => params.value ? new Date(params.value).toLocaleDateString() : ""
+    },
+    {
+      field: "dataScadenza",
+      headerName: t("training.expirationDate"),
+      width: 110,
+      valueFormatter: (params: any) => params.value ? new Date(params.value).toLocaleDateString() : ""
+    },
+    {
+      field: "articolo",
+      headerName: t("training.course"),
+      width: 200,
+      valueGetter: (params: any) => params.row.articolo?.descrizione || ""
+    },
+    {
+      field: "clienteContatto",
+      headerName: t("training.participant"),
+      width: 200,
+      valueGetter: (params: any) => {
+        const c = params.row.clienteContatto;
+        return c ? `${c.cognome} ${c.nome}` : "";
+      }
+    },
+    {
+      field: "stato",
+      headerName: t("training.status"),
+      width: 120,
+      renderCell: (params: any) => getStatusChip(params.row.stato)
+    },
+    {
+      field: "attestatoUrl",
+      headerName: t("training.certificate"),
+      width: 100,
+      renderCell: (params: any) => params.value ? (
+        <IconButton
+          size="small"
+          color="primary"
+          href={`/api/training/${params.row.id}/attestato`}
+          target="_blank"
+        >
+          <DescriptionIcon />
+        </IconButton>
+      ) : null
+    },
+    {
+      field: "actions",
+      headerName: t("common.actions"),
+      width: 120,
+      renderCell: (params: any) => (
+        <Box>
+          <IconButton size="small" onClick={() => handleEdit(params.row)}>
+            <EditIcon />
+          </IconButton>
+          <IconButton
+            size="small"
+            color="error"
+            onClick={() => {
+              if (confirm(t("common.deleteConfirm"))) {
+                deleteMutation.mutate(params.row.id);
+              }
+            }}
+          >
+            <DeleteIcon />
+          </IconButton>
+        </Box>
+      ),
+    },
+  ];
+
+  return (
+    <Box p={2}>
+      <Box display="flex" justifyContent="space-between" alignItems="center" mb={2}>
+        <Typography variant="h4">{t("training.matrix")}</Typography>
+        <Button
+          variant="contained"
+          startIcon={<AddIcon />}
+          onClick={() => setOpenDialog(true)}
+        >
+          {t("training.newTraining")}
+        </Button>
+      </Box>
+
+      <Paper sx={{ height: 600, width: "100%" }}>
+        <DataGrid
+          rows={records}
+          columns={columns}
+          loading={isLoading}
+          pageSizeOptions={[10, 25]}
+          initialState={{ pagination: { paginationModel: { pageSize: 25 } } }}
+          disableRowSelectionOnClick
+        />
+      </Paper>
+
+      <Dialog open={openDialog} onClose={handleCloseDialog} maxWidth="md" fullWidth>
+        <DialogTitle>
+          {editingId ? t("training.editTraining") : t("training.newTraining")}
+        </DialogTitle>
+        <DialogContent>
+          <Box display="flex" flexDirection="column" gap={2} mt={1}>
+            <TextField
+              select
+              label={t("clients.businessName")} // Using client label?
+              value={selectedClient || ""}
+              onChange={(e) => setSelectedClient(Number(e.target.value))}
+              fullWidth
+              disabled={!!editingId} // Locked on edit if complex to change
+            >
+              {customers.map((c: any) => (
+                <MenuItem key={c.id} value={c.id}>{c.ragioneSociale}</MenuItem>
+              ))}
+            </TextField>
+
+            <TextField
+              select
+              label={t("training.participant")}
+              value={formData.clienteContattoId || ""}
+              onChange={(e) => setFormData({ ...formData, clienteContattoId: Number(e.target.value) })}
+              fullWidth
+              required
+              disabled={!selectedClient}
+            >
+              {contacts.map((c: ClienteContatto) => (
+                <MenuItem key={c.id} value={c.id}>{c.cognome} {c.nome}</MenuItem>
+              ))}
+            </TextField>
+
+            <TextField
+              select
+              label={t("training.course")}
+              value={formData.articoloId || ""}
+              onChange={(e) => setFormData({ ...formData, articoloId: Number(e.target.value) })}
+              fullWidth
+              required
+            >
+              {courses.map((c: Articolo) => (
+                <MenuItem key={c.id} value={c.id}>{c.descrizione}</MenuItem>
+              ))}
+            </TextField>
+
+            <TextField
+              type="date"
+              label={t("training.recordDate")}
+              value={formData.dataEsecuzione ? formData.dataEsecuzione.split('T')[0] : ""}
+              onChange={(e) => setFormData({ ...formData, dataEsecuzione: e.target.value })}
+              fullWidth
+              required
+              InputLabelProps={{ shrink: true }}
+            />
+
+            <Button
+              variant="outlined"
+              component="label"
+              startIcon={<UploadIcon />}
+            >
+              {t("training.upload")}
+              <input
+                type="file"
+                hidden
+                onChange={(e) => setFileToUpload(e.target.files?.[0] || null)}
+              />
+            </Button>
+            {fileToUpload && <Typography variant="caption">{fileToUpload.name}</Typography>}
+
+            <TextField
+              label={t("common.notes")}
+              multiline
+              rows={3}
+              value={formData.note || ""}
+              onChange={(e) => setFormData({ ...formData, note: e.target.value })}
+              fullWidth
+            />
+          </Box>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={handleCloseDialog}>{t("common.cancel")}</Button>
+          <Button variant="contained" onClick={handleSubmit}>
+            {t("common.save")}
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}

src/frontend/src/apps/training/pages/RegistryPage.tsx

@@ -0,0 +1,262 @@
+import { useState, useMemo } from "react";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import {
+  Box,
+  Typography,
+  Button,
+  Paper,
+  IconButton,
+  Dialog,
+  DialogTitle,
+  DialogContent,
+  DialogActions,
+  TextField,
+} from "@mui/material";
+import { DataGrid, GridColDef } from "@mui/x-data-grid";
+import {
+  Add as AddIcon,
+  Edit as EditIcon,
+  Delete as DeleteIcon,
+} from "@mui/icons-material";
+import { useTranslation } from "react-i18next";
+import { articoliService } from "../../../services/lookupService";
+import { categoryService } from "../../warehouse/services/warehouseService";
+import { Articolo, TipoArticolo } from "../../../types";
+import { MenuItem } from "@mui/material";
+
+
+export default function RegistryPage() {
+  const { t } = useTranslation();
+  const queryClient = useQueryClient();
+  const [openDialog, setOpenDialog] = useState(false);
+  const [editingId, setEditingId] = useState<number | null>(null);
+  const [formData, setFormData] = useState<Partial<Articolo>>({
+    attivo: true,
+    tipo: TipoArticolo.Corso
+  });
+
+  // 1. Fetch Request ALL Categories
+  const { data: categories = [] } = useQuery({
+    queryKey: ["warehouse-categories"],
+    queryFn: () => categoryService.getAll(false),
+  });
+
+  const trainingCategoryId = useMemo(() => {
+    return categories.find((c: any) => c.code === "TRAIN")?.id;
+  }, [categories]);
+
+  // Find all descendants of TRAIN
+  const allowedCategories = useMemo(() => {
+    if (!trainingCategoryId) return [];
+
+    const descendants: any[] = [];
+    const queue = [trainingCategoryId];
+
+    while (queue.length > 0) {
+      const parentId = queue.shift();
+      const children = categories.filter((c: any) => c.parentCategoryId === parentId);
+      children.forEach((c: any) => {
+        descendants.push(c);
+        queue.push(c.id);
+      });
+    }
+
+    // Include TRAIN itself? Maybe better to force using subcategories if they exist, 
+    // but allowing TRAIN is flexible.
+    const root = categories.find((c: any) => c.id === trainingCategoryId);
+    return root ? [root, ...descendants] : descendants;
+  }, [categories, trainingCategoryId]);
+
+
+  // 2. Fetch Articles filtered by TipoArticolo.Corso (ignore category filter for list to show all)
+  const { data: articles = [], isLoading } = useQuery({
+    queryKey: ["articles", "training"],
+    queryFn: () => {
+      // We explicitly want ALL courses, regardless of subcategory
+      const params: any = { tipo: TipoArticolo.Corso };
+      return articoliService.getAll(params);
+    },
+  });
+
+  const createMutation = useMutation({
+    mutationFn: (data: Partial<Articolo>) => articoliService.create(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["articles", "training"] });
+      handleCloseDialog();
+    },
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: ({ id, data }: { id: number; data: Partial<Articolo> }) =>
+      articoliService.update(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["articles", "training"] });
+      handleCloseDialog();
+    },
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (id: number) => articoliService.delete(id),
+    onSuccess: () => queryClient.invalidateQueries({ queryKey: ["articles", "training"] }),
+  });
+
+  const handleCloseDialog = () => {
+    setOpenDialog(false);
+    setEditingId(null);
+    setFormData({ attivo: true, tipo: TipoArticolo.Corso });
+  };
+
+  const handleEdit = (article: Articolo) => {
+    setFormData(article);
+    setEditingId(article.id);
+    setOpenDialog(true);
+  };
+
+  const handleSubmit = () => {
+    if (!trainingCategoryId) {
+      // Warning but proceed with just Type? User said "linked to warehouse articles but with specific classification".
+      // Classification (Type) is key. Category is secondary but described in plan.
+      // If "TRAIN" category exists we use it, otherwise we rely on Tipo.
+      // But the previous code had an alert.
+      // I'll keep the alert if strict, or maybe auto-create category?
+      // Let's keep strictness on Category if plan required it.
+    }
+
+    if (!trainingCategoryId) {
+      alert("Errore: Categoria 'Formazione' non trovata. Contattare l'amministratore.");
+      return;
+    }
+
+    const dataToSave = {
+      ...formData,
+      categoriaId: formData.categoriaId || trainingCategoryId, // Use selected or default to TRAIN
+      tipoMaterialeId: 1, // Default Material Type ID
+      unitaMisura: "H", // Hours
+      tipo: TipoArticolo.Corso, // Force Type
+    };
+
+    if (editingId) {
+      updateMutation.mutate({ id: editingId, data: dataToSave });
+    } else {
+      createMutation.mutate(dataToSave);
+    }
+  };
+
+  const columns: GridColDef[] = [
+    { field: "codice", headerName: t("training.course"), width: 120 },
+    { field: "descrizione", headerName: t("common.description"), flex: 1 },
+    { field: "giorniValidita", headerName: t("training.validityDays"), width: 150 },
+    {
+      field: "actions",
+      headerName: t("common.actions"),
+      width: 120,
+      renderCell: (params) => (
+        <Box>
+          <IconButton size="small" onClick={() => handleEdit(params.row)}>
+            <EditIcon />
+          </IconButton>
+          <IconButton
+            size="small"
+            color="error"
+            onClick={() => {
+              if (confirm(t("common.deleteConfirm"))) {
+                deleteMutation.mutate(params.row.id);
+              }
+            }}
+          >
+            <DeleteIcon />
+          </IconButton>
+        </Box>
+      ),
+    },
+  ];
+
+  if (!trainingCategoryId && !isLoading && categories.length > 0) {
+    return (
+      <Box p={3}>
+        <Typography color="error">
+          Categoria "Formazione" (TRAIN) non trovata. Eseguire il seed del database.
+        </Typography>
+      </Box>
+    );
+  }
+
+  return (
+    <Box p={2}>
+      <Box display="flex" justifyContent="space-between" alignItems="center" mb={2}>
+        <Typography variant="h4">{t("training.registry")}</Typography>
+        <Button
+          variant="contained"
+          startIcon={<AddIcon />}
+          onClick={() => setOpenDialog(true)}
+        >
+          {t("training.newTraining")}
+        </Button>
+      </Box>
+
+      <Paper sx={{ height: 600, width: "100%" }}>
+        <DataGrid
+          rows={articles}
+          columns={columns}
+          loading={isLoading}
+          pageSizeOptions={[10, 25]}
+          initialState={{ pagination: { paginationModel: { pageSize: 25 } } }}
+          disableRowSelectionOnClick
+        />
+      </Paper>
+
+      <Dialog open={openDialog} onClose={handleCloseDialog} maxWidth="sm" fullWidth>
+        <DialogTitle>
+          {editingId ? t("training.editCourse") : t("training.newTraining")}
+        </DialogTitle>
+        <DialogContent>
+          <Box display="flex" flexDirection="column" gap={2} mt={1}>
+            <TextField
+              label={t("common.code")}
+              fullWidth
+              value={editingId ? formData.codice : t("clients.generatedOnSave")}
+              disabled
+              InputProps={{ readOnly: true }}
+            />
+            <TextField
+              label={t("common.description")}
+              value={formData.descrizione || ""}
+              onChange={(e) => setFormData({ ...formData, descrizione: e.target.value })}
+              fullWidth
+              required
+            />
+
+            <TextField
+              select
+              label={t("common.category")}
+              value={formData.categoriaId || trainingCategoryId || ""}
+              onChange={(e) => setFormData({ ...formData, categoriaId: Number(e.target.value) })}
+              fullWidth
+            >
+              {allowedCategories.map((c: any) => (
+                <MenuItem key={c.id} value={c.id}>
+                  {c.name} ({c.code})
+                </MenuItem>
+              ))}
+            </TextField>
+
+            <TextField
+              label={t("training.validityDays")}
+              type="number"
+              value={formData.giorniValidita || ""}
+              onChange={(e) => setFormData({ ...formData, giorniValidita: parseInt(e.target.value) || 0 })}
+              fullWidth
+              helperText="Giorni dopo i quali il corso scade"
+            />
+          </Box>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={handleCloseDialog}>{t("common.cancel")}</Button>
+          <Button variant="contained" onClick={handleSubmit}>
+            {t("common.save")}
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}

src/frontend/src/apps/training/routes.tsx

@@ -0,0 +1,18 @@
+import { Routes, Route, Navigate } from "react-router-dom";
+import TrainingLayout from "./components/TrainingLayout";
+import DashboardPage from "./pages/DashboardPage";
+import RegistryPage from "./pages/RegistryPage";
+import MatrixPage from "./pages/MatrixPage";
+
+export default function TrainingRoutes() {
+  return (
+    <Routes>
+      <Route element={<TrainingLayout />}>
+        <Route index element={<Navigate to="dashboard" replace />} />
+        <Route path="dashboard" element={<DashboardPage />} />
+        <Route path="registry" element={<RegistryPage />} />
+        <Route path="matrix" element={<MatrixPage />} />
+      </Route>
+    </Routes>
+  );
+}

src/frontend/src/apps/training/services/trainingService.ts

@@ -0,0 +1,33 @@
+import api from "../../../services/api";
+import { TrainingRecord } from "../../../types";
+
+export const trainingService = {
+  getAll: async (params?: { start?: string; end?: string; customerId?: number; courseId?: number }) => {
+    const { data } = await api.get<TrainingRecord[]>("/training", { params });
+    return data;
+  },
+  create: async (record: Partial<TrainingRecord>) => {
+    const { data } = await api.post<TrainingRecord>("/training", record);
+    return data;
+  },
+  update: async (id: number, record: Partial<TrainingRecord>) => {
+    await api.put(`/training/${id}`, record);
+  },
+  delete: async (id: number) => {
+    await api.delete(`/training/${id}`);
+  },
+  uploadCertificate: async (id: number, file: File) => {
+    const formData = new FormData();
+    formData.append("file", file);
+    await api.post(`/training/${id}/attestato`, formData, {
+      headers: { "Content-Type": "multipart/form-data" }
+    });
+  },
+  getExpiring: async () => {
+    const { data } = await api.get<TrainingRecord[]>("/training/expiring");
+    return data;
+  },
+  sendNotification: async (id: number) => {
+    await api.post(`/training/${id}/notify`);
+  }
+};

src/frontend/src/apps/warehouse/pages/ArticleFormPage.tsx

@@ -105,6 +105,7 @@ export default function ArticleFormPage() {
     isSerialManaged: false,
     hasExpiry: false,
     expiryWarningDays: 30,
+    giorniValidita: undefined as number | undefined,
     isActive: true,
     notes: "",
   });
@@ -159,6 +160,7 @@ export default function ArticleFormPage() {
         isSerialManaged: article.isSerialManaged,
         hasExpiry: article.hasExpiry,
         expiryWarningDays: article.expiryWarningDays || 30,
+        giorniValidita: article.giorniValidita,
         isActive: article.isActive,
         notes: article.notes || "",
       });
@@ -234,6 +236,7 @@ export default function ArticleFormPage() {
           isSerialManaged: formData.isSerialManaged,
           hasExpiry: formData.hasExpiry,
           expiryWarningDays: formData.expiryWarningDays,
+          giorniValidita: formData.giorniValidita,
           notes: formData.notes || undefined,
         };
         const result = await createMutation.mutateAsync(createData);
@@ -258,6 +261,7 @@ export default function ArticleFormPage() {
           isSerialManaged: formData.isSerialManaged,
           hasExpiry: formData.hasExpiry,
           expiryWarningDays: formData.expiryWarningDays,
+          giorniValidita: formData.giorniValidita,
           isActive: formData.isActive,
           notes: formData.notes || undefined,
         };
@@ -625,6 +629,20 @@ export default function ArticleFormPage() {
                       label={t("warehouse.articleForm.fields.expiryManaged")}
                     />
                   </Grid>
+                  {formData.hasExpiry && (
+                    <Grid size={{ xs: 12, sm: 6 }}>
+                      <TextField
+                        fullWidth
+                        label={t("training.validityDays")}
+                        type="number"
+                        value={formData.giorniValidita || ""}
+                        onChange={(e) =>
+                          handleChange("giorniValidita", parseInt(e.target.value) || undefined)
+                        }
+                        helperText="Giorni di validità standard (per corsi)"
+                      />
+                    </Grid>
+                  )}
                   <Grid size={12}>
                     <FormControlLabel
                       control={

src/frontend/src/apps/warehouse/pages/CategoriesPage.tsx

@@ -0,0 +1,305 @@
+import React, { useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import {
+    Box,
+    Button,
+    Dialog,
+    DialogActions,
+    DialogContent,
+    DialogTitle,
+    IconButton,
+    TextField,
+    Typography,
+    Switch,
+    FormControlLabel,
+    Collapse,
+    List,
+    ListItem,
+    ListItemText,
+    ListItemIcon,
+    Paper,
+} from '@mui/material';
+import {
+    Add as AddIcon,
+    Edit as EditIcon,
+    Delete as DeleteIcon,
+    Folder as FolderIcon,
+    ExpandMore as ExpandMoreIcon,
+    KeyboardArrowRight as KeyboardArrowRightIcon,
+} from '@mui/icons-material';
+import { useCategoryTree, useCreateCategory, useUpdateCategory, useDeleteCategory } from '../hooks';
+import { CategoryTreeDto, CreateCategoryDto, UpdateCategoryDto } from '../types';
+
+interface CategoryItemProps {
+    category: CategoryTreeDto;
+    onEdit: (category: CategoryTreeDto) => void;
+    onDelete: (id: number) => void;
+    onAddSubCategory: (parentId: number) => void;
+}
+
+const CategoryItem: React.FC<CategoryItemProps> = ({ category, onEdit, onDelete, onAddSubCategory }) => {
+    const [open, setOpen] = useState(true);
+    const hasChildren = category.children && category.children.length > 0;
+
+    const handleToggle = (e: React.MouseEvent) => {
+        e.stopPropagation();
+        setOpen(!open);
+    };
+
+    return (
+        <>
+            <ListItem
+                sx={{
+                    pl: category.level * 4,
+                    borderBottom: '1px solid #eee',
+                    '&:hover': { bgcolor: 'action.hover' },
+                }}
+                secondaryAction={
+                    <Box>
+                        <IconButton size="small" onClick={() => onAddSubCategory(category.id)} title="Aggiungi sottocategoria">
+                            <AddIcon fontSize="small" />
+                        </IconButton>
+                        <IconButton size="small" onClick={() => onEdit(category)} title="Modifica">
+                            <EditIcon fontSize="small" />
+                        </IconButton>
+                        <IconButton size="small" onClick={() => onDelete(category.id)} title="Elimina" color="error">
+                            <DeleteIcon fontSize="small" />
+                        </IconButton>
+                    </Box>
+                }
+            >
+                <ListItemIcon sx={{ minWidth: 40, cursor: hasChildren ? 'pointer' : 'default' }} onClick={(e) => hasChildren && handleToggle(e)}>
+                    {hasChildren ? (open ? <ExpandMoreIcon /> : <KeyboardArrowRightIcon />) : <Box sx={{ width: 24 }} />}
+                </ListItemIcon>
+                <ListItemIcon>
+                    <FolderIcon color={category.isActive ? 'primary' : 'disabled'} />
+                </ListItemIcon>
+                <ListItemText
+                    primary={
+                        <Typography variant="body1" fontWeight="medium">
+                            {category.name}
+                        </Typography>
+                    }
+                    secondary={category.description}
+                />
+            </ListItem>
+            {hasChildren && (
+                <Collapse in={open} timeout="auto" unmountOnExit>
+                    <List component="div" disablePadding>
+                        {category.children.map((child) => (
+                            <CategoryItem
+                                key={child.id}
+                                category={child}
+                                onEdit={onEdit}
+                                onDelete={onDelete}
+                                onAddSubCategory={onAddSubCategory}
+                            />
+                        ))}
+                    </List>
+                </Collapse>
+            )}
+        </>
+    );
+};
+
+export default function CategoriesPage() {
+    const { t } = useTranslation();
+    const { data: categories, isLoading } = useCategoryTree();
+    const createMutation = useCreateCategory();
+    const updateMutation = useUpdateCategory();
+    const deleteMutation = useDeleteCategory();
+
+    const [openDialog, setOpenDialog] = useState(false);
+    const [editingCategory, setEditingCategory] = useState<CategoryTreeDto | null>(null);
+    const [parentCategoryId, setParentCategoryId] = useState<number | undefined>(undefined);
+    const [deleteConfirmOpen, setDeleteConfirmOpen] = useState(false);
+    const [categoryToDelete, setCategoryToDelete] = useState<number | null>(null);
+
+    const [formData, setFormData] = useState<CreateCategoryDto>({
+        name: '',
+        description: '',
+        sortOrder: 0,
+        parentCategoryId: undefined,
+    });
+
+    const [isActive, setIsActive] = useState(true);
+
+    const handleOpenDialog = (category?: CategoryTreeDto, parentId?: number) => {
+        if (category) {
+            setEditingCategory(category);
+            setFormData({
+                name: category.name,
+                description: category.description || '',
+                sortOrder: 0, // Not in TreeDto usually, default to 0
+                parentCategoryId: undefined, // Usually handled by structure
+            });
+            setIsActive(category.isActive);
+            setParentCategoryId(undefined);
+        } else {
+            setEditingCategory(null);
+            setFormData({
+                name: '',
+                description: '',
+                sortOrder: 0,
+                parentCategoryId: parentId,
+            });
+            setIsActive(true);
+            setParentCategoryId(parentId);
+        }
+        setOpenDialog(true);
+    };
+
+    const handleCloseDialog = () => {
+        setOpenDialog(false);
+        setEditingCategory(null);
+        setParentCategoryId(undefined);
+    };
+
+    const handleSubmit = async () => {
+        try {
+            if (editingCategory) {
+                const updateData: UpdateCategoryDto = {
+                    name: formData.name,
+                    description: formData.description || undefined,
+                    sortOrder: formData.sortOrder,
+                    isActive: isActive,
+                };
+                await updateMutation.mutateAsync({ id: editingCategory.id, data: updateData });
+            } else {
+                const createData: CreateCategoryDto = {
+                    name: formData.name,
+                    description: formData.description || undefined,
+                    sortOrder: formData.sortOrder,
+                    parentCategoryId: parentCategoryId,
+                };
+                await createMutation.mutateAsync(createData);
+            }
+            handleCloseDialog();
+        } catch (error) {
+            console.error("Error saving category:", error);
+        }
+    };
+
+    const handleDeleteClick = (id: number) => {
+        setCategoryToDelete(id);
+        setDeleteConfirmOpen(true);
+    };
+
+    const handleConfirmDelete = async () => {
+        if (categoryToDelete) {
+            try {
+                await deleteMutation.mutateAsync(categoryToDelete);
+                setDeleteConfirmOpen(false);
+                setCategoryToDelete(null);
+            } catch (error) {
+                console.error("Error deleting category:", error);
+            }
+        }
+    };
+
+    if (isLoading) {
+        return <Typography>{t('common.loading')}</Typography>;
+    }
+
+    return (
+        <Box>
+            <Box sx={{ mb: 3, display: "flex", justifyContent: "space-between", alignItems: "center" }}>
+                <Typography variant="h5" fontWeight="bold">
+                    {t('apps.warehouse.categories.title')}
+                </Typography>
+                <Button
+                    variant="contained"
+                    startIcon={<AddIcon />}
+                    onClick={() => handleOpenDialog()}
+                >
+                    {t('apps.warehouse.categories.newParams.root')}
+                </Button>
+            </Box>
+
+            <Paper elevation={0} variant="outlined">
+                <List>
+                    {categories?.map((category) => (
+                        <CategoryItem
+                            key={category.id}
+                            category={category}
+                            onEdit={handleOpenDialog}
+                            onDelete={handleDeleteClick}
+                            onAddSubCategory={(parentId) => handleOpenDialog(undefined, parentId)}
+                        />
+                    ))}
+                    {(!categories || categories.length === 0) && (
+                        <ListItem>
+                            <ListItemText primary={t('apps.warehouse.categories.empty')} />
+                        </ListItem>
+                    )}
+                </List>
+            </Paper>
+
+            {/* Create/Edit Dialog */}
+            <Dialog open={openDialog} onClose={handleCloseDialog} maxWidth="sm" fullWidth>
+                <DialogTitle>
+                    {editingCategory ? t('apps.warehouse.categories.edit') : t('apps.warehouse.categories.new')}
+                </DialogTitle>
+                <DialogContent>
+                    <Box sx={{ display: 'flex', flexDirection: 'column', gap: 2, mt: 1 }}>
+                        <TextField
+                            label={t('apps.warehouse.categories.fields.name')}
+                            value={formData.name}
+                            onChange={(e) => setFormData({ ...formData, name: e.target.value })}
+                            fullWidth
+                            required
+                        />
+                        <TextField
+                            label={t('apps.warehouse.categories.fields.description')}
+                            value={formData.description}
+                            onChange={(e) => setFormData({ ...formData, description: e.target.value })}
+                            fullWidth
+                            multiline
+                            rows={3}
+                        />
+                        <TextField
+                            label={t('apps.warehouse.categories.fields.sortOrder')}
+                            type="number"
+                            value={formData.sortOrder}
+                            onChange={(e) => setFormData({ ...formData, sortOrder: parseInt(e.target.value) || 0 })}
+                            fullWidth
+                        />
+                        {editingCategory && (
+                            <FormControlLabel
+                                control={
+                                    <Switch
+                                        checked={isActive}
+                                        onChange={(e) => setIsActive(e.target.checked)}
+                                    />
+                                }
+                                label={t('apps.warehouse.categories.fields.active')}
+                            />
+                        )}
+                    </Box>
+                </DialogContent>
+                <DialogActions>
+                    <Button onClick={handleCloseDialog}>{t('common.cancel')}</Button>
+                    <Button onClick={handleSubmit} variant="contained" disabled={!formData.name}>
+                        {t('common.save')}
+                    </Button>
+                </DialogActions>
+            </Dialog>
+
+            {/* Delete Confirmation Dialog */}
+            <Dialog open={deleteConfirmOpen} onClose={() => setDeleteConfirmOpen(false)}>
+                <DialogTitle>{t('apps.warehouse.categories.deleteDialog.title')}</DialogTitle>
+                <DialogContent>
+                    <Typography>
+                        {t('apps.warehouse.categories.deleteDialog.content')}
+                    </Typography>
+                </DialogContent>
+                <DialogActions>
+                    <Button onClick={() => setDeleteConfirmOpen(false)}>{t('common.cancel')}</Button>
+                    <Button onClick={handleConfirmDelete} color="error" variant="contained">
+                        {t('common.delete')}
+                    </Button>
+                </DialogActions>
+            </Dialog>
+        </Box>
+    );
+}

src/frontend/src/apps/warehouse/pages/index.ts

@@ -4,6 +4,7 @@ export { default as WarehouseDashboard } from './WarehouseDashboard';
 // Articles
 export { default as ArticlesPage } from './ArticlesPage';
 export { default as ArticleFormPage } from './ArticleFormPage';
+export { default as CategoriesPage } from './CategoriesPage';
 
 // Warehouse Locations
 export { default as WarehouseLocationsPage } from './WarehouseLocationsPage';

src/frontend/src/apps/warehouse/routes.tsx

@@ -4,6 +4,7 @@ import {
   WarehouseDashboard,
   ArticlesPage,
   ArticleFormPage,
+  CategoriesPage,
   WarehouseLocationsPage,
   MovementsPage,
   InboundMovementPage,
@@ -30,6 +31,7 @@ export default function WarehouseRoutes() {
           <Route path="articles/new" element={<ArticleFormPage />} />
           <Route path="articles/:id" element={<ArticleFormPage />} />
           <Route path="articles/:id/edit" element={<ArticleFormPage />} />
+          <Route path="categories" element={<CategoriesPage />} />
 
           {/* Warehouse Locations */}
           <Route path="locations" element={<WarehouseLocationsPage />} />

src/frontend/src/apps/warehouse/services/warehouseService.ts

@@ -558,6 +558,7 @@ export const inventoryService = {
   },
 };
 
+
 // Export all services
 export default {
   locations: warehouseLocationService,

src/frontend/src/apps/warehouse/types/index.ts

@@ -230,6 +230,7 @@ export interface UpdateCategoryDto {
   notes?: string;
 }
 
+
 // ===============================================
 // ARTICLE
 // ===============================================
@@ -252,6 +253,7 @@ export interface ArticleDto {
   isSerialManaged: boolean;
   hasExpiry: boolean;
   expiryWarningDays?: number;
+  giorniValidita?: number;
   minimumStock?: number;
   maximumStock?: number;
   reorderPoint?: number;
@@ -287,6 +289,7 @@ export interface CreateArticleDto {
   isSerialManaged: boolean;
   hasExpiry: boolean;
   expiryWarningDays?: number;
+  giorniValidita?: number;
   minimumStock?: number;
   maximumStock?: number;
   reorderPoint?: number;
@@ -316,6 +319,7 @@ export interface UpdateArticleDto {
   isSerialManaged: boolean;
   hasExpiry: boolean;
   expiryWarningDays?: number;
+  giorniValidita?: number;
   minimumStock?: number;
   maximumStock?: number;
   reorderPoint?: number;

src/frontend/src/components/SearchBar.tsx

@@ -64,14 +64,14 @@ export default function SearchBar() {
   const options = useMemo(() => {
     const opts: SearchOption[] = [
       // Core
-      { label: t('menu.dashboard'), path: '/', category: 'Zentral', translationKey: 'menu.dashboard' },
+      { label: t('menu.dashboard'), path: '/', category: t('apps.core.title'), translationKey: 'menu.dashboard' },
-      { label: t('menu.calendar'), path: '/calendario', category: 'Zentral', translationKey: 'menu.calendar' },
+      { label: t('menu.calendar'), path: '/calendario', category: t('apps.core.title'), translationKey: 'menu.calendar' },
-      { label: t('menu.events'), path: '/eventi', category: 'Zentral', translationKey: 'menu.events' },
+      { label: t('menu.events'), path: '/eventi', category: t('apps.core.title'), translationKey: 'menu.events' },
-      { label: t('menu.clients'), path: '/clienti', category: 'Zentral', translationKey: 'menu.clients' },
+      { label: t('menu.clients'), path: '/clienti', category: t('apps.core.title'), translationKey: 'menu.clients' },
-      { label: t('menu.location'), path: '/location', category: 'Zentral', translationKey: 'menu.location' },
+      { label: t('menu.location'), path: '/location', category: t('apps.core.title'), translationKey: 'menu.location' },
-      { label: t('menu.articles'), path: '/articoli', category: 'Zentral', translationKey: 'menu.articles' },
+      { label: t('menu.articles'), path: '/articoli', category: t('apps.core.title'), translationKey: 'menu.articles' },
-      { label: t('menu.resources'), path: '/risorse', category: 'Zentral', translationKey: 'menu.resources' },
+      { label: t('menu.resources'), path: '/risorse', category: t('apps.core.title'), translationKey: 'menu.resources' },
-      { label: t('menu.reports'), path: '/report-templates', category: 'Zentral', translationKey: 'menu.reports' },
+      { label: t('menu.reports'), path: '/report-templates', category: t('apps.core.title'), translationKey: 'menu.reports' },
     ];
 
     if (activeAppCodes.includes('warehouse')) {
@@ -109,6 +109,14 @@ export default function SearchBar() {
       );
     }
 
+    if (activeAppCodes.includes('training')) {
+      opts.push(
+        { label: t('apps.training.dashboard'), path: '/training/dashboard', category: t('apps.training.title'), translationKey: 'apps.training.dashboard' },
+        { label: t('apps.training.registry'), path: '/training/registry', category: t('apps.training.title'), translationKey: 'apps.training.registry' },
+        { label: t('apps.training.matrix'), path: '/training/matrix', category: t('apps.training.title'), translationKey: 'apps.training.matrix' }
+      );
+    }
+
     opts.push(
       { label: t('menu.apps'), path: '/apps', category: t('menu.administration'), translationKey: 'menu.apps' },
       { label: t('menu.autoCodes'), path: '/admin/auto-codes', category: t('menu.administration'), translationKey: 'menu.autoCodes' },

src/frontend/src/components/Sidebar.tsx

@@ -36,11 +36,13 @@ import {
   Timeline as TimelineIcon,
   PrecisionManufacturing as ManufacturingIcon,
   Category as CategoryIcon,
+  Folder as FolderIcon,
   AttachMoney as AttachMoneyIcon,
   Receipt as ReceiptIcon,
   ChevronLeft,
   ChevronRight,
   Email as EmailIcon,
+  School as SchoolIcon,
 } from '@mui/icons-material';
 import { useLocation } from 'react-router-dom';
 import { useLanguage } from '../contexts/LanguageContext';
@@ -77,6 +79,7 @@ export default function Sidebar({ onClose, isCollapsed = false, onToggleCollapse
     production: false,
     events: false,
     hr: false,
+    training: false,
     admin: false,
   });
 
@@ -102,7 +105,7 @@ export default function Sidebar({ onClose, isCollapsed = false, onToggleCollapse
   const menuStructure: MenuItem[] = [
     {
       id: 'dashboard',
-      label: 'Zentral Dashboard',
+      label: t('menu.dashboard'),
       icon: <DashboardIcon />,
       path: '/',
       translationKey: 'menu.dashboard',
@@ -116,6 +119,7 @@ export default function Sidebar({ onClose, isCollapsed = false, onToggleCollapse
       children: [
         { id: 'wh-dashboard', label: t('menu.dashboard'), tabLabel: t('menu.warehouse'), icon: <DashboardIcon />, path: '/warehouse', translationKey: 'menu.warehouse' },
         { id: 'wh-articles', label: t('menu.articles'), icon: <CategoryIcon />, path: '/warehouse/articles', translationKey: 'menu.articles' },
+        { id: 'wh-categories', label: t('menu.categories'), icon: <FolderIcon />, path: '/warehouse/categories', translationKey: 'menu.categories' },
         { id: 'wh-locations', label: t('menu.location'), icon: <PlaceIcon />, path: '/warehouse/locations', translationKey: 'menu.location' },
         { id: 'wh-movements', label: t('menu.movements'), icon: <SwapIcon />, path: '/warehouse/movements', translationKey: 'menu.movements' },
         { id: 'wh-stock', label: t('menu.stock'), icon: <StorageIcon />, path: '/warehouse/stock', translationKey: 'menu.stock' },
@@ -184,6 +188,18 @@ export default function Sidebar({ onClose, isCollapsed = false, onToggleCollapse
         { id: 'hr-rimborsi', label: t('apps.hr.rimborsi'), icon: <ReceiptIcon />, path: '/hr/rimborsi', translationKey: 'apps.hr.rimborsi' },
       ],
     },
+    {
+      id: 'training',
+      label: t('apps.training.title'),
+      icon: <SchoolIcon />,
+      appCode: 'training',
+      translationKey: 'apps.training.title',
+      children: [
+        { id: 'tr-dashboard', label: t('apps.training.dashboard'), tabLabel: t('apps.training.title'), icon: <DashboardIcon />, path: '/training/dashboard', translationKey: 'apps.training.dashboard' },
+        { id: 'tr-registry', label: t('apps.training.registry'), icon: <SchoolIcon />, path: '/training/registry', translationKey: 'apps.training.registry' },
+        { id: 'tr-matrix', label: t('apps.training.matrix'), icon: <AssignmentIcon />, path: '/training/matrix', translationKey: 'apps.training.matrix' },
+      ],
+    },
     {
       id: 'admin',
       label: t('menu.administration'),

src/frontend/src/services/lookupService.ts

@@ -1,5 +1,5 @@
 import api from './api';
-import { Cliente, Location, Risorsa, Articolo, LookupItem } from '../types';
+import { Cliente, Location, Risorsa, Articolo, LookupItem, ClienteContatto } from '../types';
 
 export const lookupService = {
   getTipiEvento: async () => {
@@ -72,6 +72,20 @@ export const clientiService = {
   delete: async (id: number) => {
     await api.delete(`/clienti/${id}`);
   },
+  getContatti: async (id: number) => {
+    const { data } = await api.get<ClienteContatto[]>(`/clienti/${id}/contatti`);
+    return data;
+  },
+  createContatto: async (id: number, contatto: Partial<ClienteContatto>) => {
+    const { data } = await api.post<ClienteContatto>(`/clienti/${id}/contatti`, contatto);
+    return data;
+  },
+  updateContatto: async (id: number, contattoId: number, contatto: Partial<ClienteContatto>) => {
+    await api.put(`/clienti/${id}/contatti/${contattoId}`, contatto);
+  },
+  deleteContatto: async (id: number, contattoId: number) => {
+    await api.delete(`/clienti/${id}/contatti/${contattoId}`);
+  },
 };
 
 export const locationService = {
@@ -117,7 +131,7 @@ export const risorseService = {
 };
 
 export const articoliService = {
-  getAll: async (params?: { search?: string; tipoMaterialeId?: number; categoriaId?: number; attivo?: boolean }) => {
+  getAll: async (params?: { search?: string; tipoMaterialeId?: number; categoriaId?: number; attivo?: boolean; tipo?: number }) => {
     const { data } = await api.get<Articolo[]>('/articoli', { params });
     return data;
   },

src/frontend/src/types/index.ts

@@ -4,6 +4,12 @@ export enum StatoEvento {
   Confermato = 20,
 }
 
+export enum TipoArticolo {
+  Standard = 0,
+  Corso = 1,
+  Servizio = 2,
+}
+
 export interface BaseEntity {
   id: number;
   createdAt?: string;
@@ -29,6 +35,16 @@ export interface Cliente extends BaseEntity {
   codiceDestinatario?: string;
   note?: string;
   attivo: boolean;
+  contatti?: ClienteContatto[];
+}
+
+export interface ClienteContatto extends BaseEntity {
+  clienteId: number;
+  nome: string;
+  cognome: string;
+  email?: string;
+  telefono?: string;
+  ruolo?: string;
 }
 
 export interface Location extends BaseEntity {
@@ -105,6 +121,8 @@ export interface Articolo extends BaseEntity {
   unitaMisura?: string;
   note?: string;
   attivo: boolean;
+  giorniValidita?: number;
+  tipo?: TipoArticolo;
 }
 
 export interface Evento extends BaseEntity {
@@ -294,3 +312,15 @@ export interface LookupItem {
   citta?: string;
   tipo?: string;
 }
+
+export interface TrainingRecord extends BaseEntity {
+  clienteContattoId: number;
+  clienteContatto?: ClienteContatto;
+  articoloId: number;
+  articolo?: Articolo;
+  dataEsecuzione: string;
+  dataScadenza?: string;
+  attestatoUrl?: string;
+  note?: string;
+  stato?: number; // 0=Valid, 1=Expiring, 2=Expired
+}