feat(analytics): account commission and investment transfers

Handle cashback commission imports, include commissions in analytics with separate investment metrics, and expose commission/version details in the UI.

Made-with: Cursor

frontend/src/components/EditTransactionModal.tsx

@@ -24,6 +24,14 @@ function extractPattern(description: string): string {
     .slice(0, 50);
 }
 
+function getCommissionAmountSigned(transaction: Transaction): number {
+  if (transaction.commission === 0) return 0;
+  const isCashbackIncome =
+    transaction.amountSigned === 0 &&
+    transaction.description.toLowerCase().includes('зачисление');
+  return isCashbackIncome ? transaction.commission : -transaction.commission;
+}
+
 export function EditTransactionModal({
   transaction,
   categories,
@@ -96,6 +104,12 @@ export function EditTransactionModal({
                 <span className="modal-tx-label">Сумма</span>
                 <span>{formatAmount(transaction.amountSigned)}</span>
               </div>
+              {transaction.commission !== 0 && (
+                <div className="modal-tx-row">
+                  <span className="modal-tx-label">Комиссия</span>
+                  <span>{formatAmount(getCommissionAmountSigned(transaction))}</span>
+                </div>
+              )}
               <div className="modal-tx-row">
                 <span className="modal-tx-label">Описание</span>
                 <span className="modal-tx-description">