feat: implement transaction handling and add integration tests for Plaid transaction handlers

src/FiscalOS.Infra/Transactions/Plaid/PlaidAddedTransactionHandler.cs

@@ -26,6 +26,14 @@ internal sealed class PlaidAddedTransactionHandler : IPlaidAddedTransactionHandl
     _appDbContext = appDbContext;
   }
 
+  public static PlaidAddedTransactionHandler From(
+    ILogger<PlaidAddedTransactionHandler> logger,
+    AppDbContext appDbContext
+  )
+  {
+    return new(logger, appDbContext);
+  }
+
   public static PlaidAddedTransactionHandler From(IServiceProvider serviceProvider)
   {
     return new(

src/FiscalOS.Infra/Transactions/Plaid/PlaidModifiedTransactionHandler.cs

@@ -26,6 +26,14 @@ internal sealed class PlaidModifiedTransactionHandler : IPlaidModifiedTransactio
     _appDbContext = appDbContext;
   }
 
+  public static PlaidModifiedTransactionHandler From(
+    ILogger<PlaidModifiedTransactionHandler> logger,
+    AppDbContext appDbContext
+  )
+  {
+    return new(logger, appDbContext);
+  }
+
   public static PlaidModifiedTransactionHandler From(IServiceProvider serviceProvider)
   {
     return new(
@@ -71,6 +79,7 @@ internal sealed class PlaidModifiedTransactionHandler : IPlaidModifiedTransactio
         }
 
         var newTransactionData = Transaction.From(
+          existing.Id,
           existing.UserId,
           existing.AccountId,
           plaidModifiedTransaction.Merchant,

src/FiscalOS.Infra/Transactions/Plaid/PlaidTransactionProcessor.cs

@@ -28,6 +28,15 @@ internal sealed class PlaidTransactionProcessor : IPlaidTransactionProcessor
     _removedHandler = removedHandler;
   }
 
+  internal static PlaidTransactionProcessor From(
+    IPlaidAddedTransactionHandler addedHandler,
+    IPlaidModifiedTransactionHandler modifiedHandler,
+    IPlaidRemovedTransactionHandler removedHandler
+  )
+  {
+    return new(addedHandler, modifiedHandler, removedHandler);
+  }
+
   internal static PlaidTransactionProcessor From(IServiceProvider provider)
   {
     return new(

src/FiscalOS.Infra/Transactions/Plaid/PlaidTransactionSyncer.cs

@@ -28,6 +28,15 @@ internal sealed class PlaidTransactionSyncer : IPlaidTransactionSyncer
     _transactionProcessor = plaidTransactionProcessor;
   }
 
+  public static PlaidTransactionSyncer From(
+    ILogger<PlaidTransactionSyncer> logger,
+    IPlaidTransactionService plaidTransactionService,
+    IPlaidTransactionProcessor plaidTransactionProcessor
+  )
+  {
+    return new(logger, plaidTransactionService, plaidTransactionProcessor);
+  }
+
   public static PlaidTransactionSyncer From(IServiceProvider serviceProvider)
   {
     return new(