Make CI runner email titles more useful
Currently, CI runner email titles look like:
"staccato-signals | Pipeline #5700692 has failed for staging | 90d4da4f"
or — more to the point — look like:
which is pretty useless for figuring out if it's good news or bad news.
Please move the point of the message ("Failed") closer to the front by default, and more the completely useless pipeline and build # to the end (or, perhaps, remove them from the subject altogether — how is that ever going to be useful in the subject line?)