The finding: commit discipline collapsed, then came backURL copied
A commit subject either follows the type(scope): summary convention or it does not. That is a clean binary. Across the whole history, 247 of 998 subjects follow it — 24.7%.
That single average hides the real story. Split it by month, as a rate out of 100:
Share of subjects following the convention
Dec 202577
Jan 202695
Feb 20260
Mar 202617
Apr 20261
May 202612
Jun 202613
Jul 202622
Aug 202660
Read as a percentage. The average of 24.7% describes no month in this history.
The shape is a U, not a slope. Discipline ran at 77% and 95%. It fell to exactly zero for a month of 155 commits. It stayed near the floor for four months. It is now climbing: 22%, then 60%. Over the most recent 50 commits it is 70%.
An average of 24.7% would have told you the project is sloppy. The monthly split tells you the project had a habit, lost it, and is rebuilding it. Those need different responses.