Anki 25.09 Release Candidate

As in line with previous betas, the “Help me Decide” feature uses the incorrect mathematical formulae and thus displays meaningless information to the user.

For calculating the DR to optimize efficiency, the user needs to see ΔΣR/Δ∫t, however it currently displays ΣR(_end)/Δ∫t, which is not mathematically meaningful. This issue has been discussed extensively in this thread: Replace CMRR with workload-vs-DR graph (+more) - #96 by ZornHadNoChoice