Cashflow Copy CSV should include all commas

Cashflow Copy CSV should include all commas so content is fully-compliant CSV compatible with e.g. github gists.

Example [github gist](https://gist.github.com/softwareengineerprogrammer/c443ec83fdf5b024dcd60ae98a99efac) complaining about missing commas:

<img width="2184" height="394" alt="Image" src="https://github.com/user-attachments/assets/21d6def3-4ba7-4287-be34-0426372ee835" />