Finisher tasks completing a day later than scheduled, causing delayed uploads and “Missing Head Report” banner

[Kobby-Bawuah]

Describe the bug
Some finisher tasks that are scheduled to start on a given day are not completing until the following day. While these tasks eventually finish, the delay causes temporary inconsistencies in the UI and can trigger the “Missing Head Report” banner during the window before completion.

Environment (please complete the following information):

• System: Backend processing
• Environment: Codecov backend (task scheduling / finisher execution)

To Reproduce

• Observe uploads scheduled to start on Day 1.
• Note that the finisher task completes only on Day 2.

Expected behavior
Finisher tasks should complete soon after they are scheduled to start

Screenshots
Will be tagged in the related Linear ticket for this issue.

Additional context

• Related to the same class of issues where finisher tasks either disappear or delay completion.
• Example commit and evidence tagged in the internal Linear ticket.

[linear]

CCMRG-1817