Revenue forecast & run-rate projections

[therealjhay]

ProblemThe dashboard shows historical volume but no forward-looking estimate; merchants cannot project runway or fees.

Solution

• Add a forecast card on the merchant dashboard using linear regression over the last 90d of settlement volume (client-side computation from the full series).
• Show projected next-30d volume and estimated fees with a confidence interval marker.
• Add a toggle to include/exclude outliers (large one-off settlements).
• Persist the computation mode in the store.

Acceptance Criteria

• Forecast updates as the date range changes.
• Outlier exclusion visibly changes the projection.
• The card explains its method and confidence bounds.
• npm run build passes.

Note for Contributors: Write a clear PR description. Show forecast with and without outliers.

[Eyanus]

Hello Maintainer,

I’d like to work on this issue. I understand the requirements and I’m confident I can implement a clean and reliable solution following the project’s standards, including proper testing.

I would appreciate the opportunity to contribute.

Thank you.

[grantfox-oss]

🦊 GrantFox — @Eyanus has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #472)
2. Your PR will be reviewed by the Betta-Pay maintainers

Good luck! Track your progress on GrantFox.