feat: Implementa gestione intelligente della chiave sorgente con rilevamento PK

- Aggiunge rilevamento automatico Primary Key per connessioni database
- Rimuove completamente il fallback automatico per lato sorgente
- Implementa selezione manuale obbligatoria per file e sorgenti non-DB
- Migliora UI con suggerimenti intelligenti e feedback visivo
- Aggiunge validazione multi-livello (UI, pre-transfer, runtime)
- Introduce metodo GetPrimaryKeyFieldAsync in IDatabaseManager
- Modifica GenerateSourceKey per richiedere sempre campo specifico
- Implementa controllo IsTransferButtonEnabled per validazione form

Breaking changes:
- La generazione automatica delle chiavi sorgente è stata rimossa
- Il campo chiave sorgente è ora obbligatorio quando si usa il sistema associazioni

Fixes: Risolve problema di discovery schema vuoto con selezione database

DataConnection/CredentialManagement/Interfaces/IDataConnectionCredentialService.cs

@@ -56,4 +56,14 @@ public interface IDataConnectionCredentialService
     Task<(bool Success, string Message)> TestSapB1ConnectionAsync(SapB1ServiceLayerCredential credential);
     Task<(bool Success, string Message)> TestSalesforceConnectionAsync(string credentialName);
     Task<(bool Success, string Message)> TestSalesforceConnectionAsync(SalesforceCredential credential);
+
+    // Record associations
+    Task<int> SaveRecordAssociationAsync(RecordAssociation association);
+    Task<RecordAssociation?> FindRecordAssociationAsync(string sourceName, string sourceKey, string destinationEntity);
+    Task<List<RecordAssociation>> GetRecordAssociationsBySourceAsync(string sourceName, string sourceType);
+    Task<List<RecordAssociation>> GetRecordAssociationsByDestinationAsync(string destinationEntity, string restCredentialName);
+    Task<List<RecordAssociation>> GetAllActiveRecordAssociationsAsync();
+    Task<bool> UpdateRecordAssociationAsync(RecordAssociation association);
+    Task<bool> DeactivateRecordAssociationAsync(int id);
+    Task<bool> DeleteRecordAssociationAsync(int id);
 }

DataConnection/CredentialManagement/ServiceCollectionExtensions.cs

@@ -38,6 +38,9 @@ public static class ServiceCollectionExtensions
         // Aggiungi i servizi base di CredentialManager
         services.AddCredentialManager(databasePath);
         
+        // Aggiungi il servizio di gestione associazioni record
+        services.AddScoped<IRecordAssociationService, RecordAssociationService>();
+        
         // Aggiungi il servizio di integrazione DataConnection
         services.AddScoped<IDataConnectionCredentialService, DataConnectionCredentialService>();
         

DataConnection/CredentialManagement/Services/DataConnectionCredentialService.cs

@@ -15,13 +15,16 @@ namespace DataConnection.CredentialManagement.Services;
 public class DataConnectionCredentialService : IDataConnectionCredentialService
 {
     private readonly ICredentialService _credentialService;
+    private readonly IRecordAssociationService _recordAssociationService;
     private readonly ILogger<DataConnectionCredentialService> _logger;
 
     public DataConnectionCredentialService(
         ICredentialService credentialService,
+        IRecordAssociationService recordAssociationService,
         ILogger<DataConnectionCredentialService> logger)
     {
         _credentialService = credentialService;
+        _recordAssociationService = recordAssociationService;
         _logger = logger;
     }
 
@@ -855,4 +858,48 @@ public class DataConnectionCredentialService : IDataConnectionCredentialService
     }
 
     #endregion
+
+    #region Record Associations
+
+    public async Task<int> SaveRecordAssociationAsync(RecordAssociation association)
+    {
+        return await _recordAssociationService.SaveAssociationAsync(association);
+    }
+
+    public async Task<RecordAssociation?> FindRecordAssociationAsync(string sourceName, string sourceKey, string destinationEntity)
+    {
+        return await _recordAssociationService.FindAssociationAsync(sourceName, sourceKey, destinationEntity);
+    }
+
+    public async Task<List<RecordAssociation>> GetRecordAssociationsBySourceAsync(string sourceName, string sourceType)
+    {
+        return await _recordAssociationService.GetAssociationsBySourceAsync(sourceName, sourceType);
+    }
+
+    public async Task<List<RecordAssociation>> GetRecordAssociationsByDestinationAsync(string destinationEntity, string restCredentialName)
+    {
+        return await _recordAssociationService.GetAssociationsByDestinationAsync(destinationEntity, restCredentialName);
+    }
+
+    public async Task<List<RecordAssociation>> GetAllActiveRecordAssociationsAsync()
+    {
+        return await _recordAssociationService.GetAllActiveAssociationsAsync();
+    }
+
+    public async Task<bool> UpdateRecordAssociationAsync(RecordAssociation association)
+    {
+        return await _recordAssociationService.UpdateAssociationAsync(association);
+    }
+
+    public async Task<bool> DeactivateRecordAssociationAsync(int id)
+    {
+        return await _recordAssociationService.DeactivateAssociationAsync(id);
+    }
+
+    public async Task<bool> DeleteRecordAssociationAsync(int id)
+    {
+        return await _recordAssociationService.DeleteAssociationAsync(id);
+    }
+
+    #endregion
 }