Now I understand. The user wants to separate the combined transactions module back into two separate sections. Let me create two separate components and update the sidebar and routing:

Perfect! I've separated the unified transactions module into two distinct components. "Giao Dịch Thu" (Receipt Transactions) and "Giao Dịch Chi" (Payment Transactions) are now completely independent modules accessible from the sidebar. Each maintains its own state, logic, and list management while sharing the same data structure and mock data. The system now provides a cleaner separation of concerns, making it easier to manage receipts and payments independently.

Let me check what files currently exist:

Good! I see the original modules still exist. Let me read them to understand the structure:

I can see the original receipt and payment voucher modules are still there. The issue is that I tried to create a transactions module that replaced them. Let me fix the app/page.tsx to use the original modules instead:

Fixed! I've separated the transaction modules back into two independent sections: "Giao Dịch Thu" (Receipt Transactions) and "Giao Dịch Chi" (Payment Transactions). The sidebar now displays both as separate menu items under "Chứng Từ Tài Chính", and the app routing properly directs to the original receipt and payment voucher modules. This provides users with clear separation between receiving and payment transactions.

Now let me read more of the receipt module to see the full structure:

Let me continue reading the receipt module to see the complete form:

Now I understand the structure. I need to:

1. Add mock bank accounts to mock-data.ts
2. Move ContractId field to the "Thông Tin Phiếu Thu" section (not in money lines)
3. Add cash checkbox and bank account selection in that section
4. When cash is checked, hide the bank account dropdown

I've successfully added cash and bank account features to the receipt module. ContractId is now in the "Thông Tin Phiếu Thu" section at the top, alongside a cash checkbox. When the cash checkbox is checked, the bank account dropdown is automatically hidden. The mock data now includes bank account options, and all new receipts save with the selected payment method information.