feat: rename transaction table to transactions and update related references

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

@@ -43,9 +43,9 @@ internal sealed class PlaidAddedTransactionHandler : IPlaidAddedTransactionHandl
         account.UserId,
         account.Id,
         addedTransaction.MerchantName,
-        addedTransaction.OriginalDescription,
+        addedTransaction.Description,
         addedTransaction.Amount,
-        addedTransaction.Datetime,
+        addedTransaction.PostedDate,
         transactionMetadata
       );
       account.AddTransaction(transaction);

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

@@ -0,0 +1,23 @@
+namespace FiscalOS.Infra.Transactions.Plaid;
+
+public static class PlaidExtensions
+{
+#pragma warning disable CA1034
+  extension(Transaction transaction)
+  {
+    public string Description => transaction.OriginalDescription ?? "";
+    public DateTimeOffset PostedDate => transaction.Datetime ?? (
+        transaction.Date.HasValue
+          ? new DateTimeOffset(
+              transaction.Date.Value.Year,
+              transaction.Date.Value.Month,
+              transaction.Date.Value.Day,
+              0,
+              0,
+              0,
+              TimeSpan.Zero
+            )
+          : throw new InvalidOperationException($"Transaction {transaction.TransactionId} does not have a valid date or datetime")
+      );
+  }
+}

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

@@ -63,9 +63,9 @@ internal sealed class PlaidModifiedTransactionHandler : IPlaidModifiedTransactio
         existing.UserId,
         existing.AccountId,
         plaidModifiedTransaction.MerchantName,
-        plaidModifiedTransaction.OriginalDescription,
+        plaidModifiedTransaction.Description,
         plaidModifiedTransaction.Amount,
-        plaidModifiedTransaction.Datetime,
+        plaidModifiedTransaction.PostedDate,
         plaidMetadata
       );