dcron is very lightweight and has most of those features. Dunno about random delay/timeouts, but worst case those sound like a 10 line shell script away.
> dcron is very lightweight and has most of those features.
Hmm, let's see ...
- Choice 1: Use what comes with my system (two choices, systemd or, if for the anti-systemd people... cron)
- Choice 2: Install some random third-party that has not had any substancial git commits since 2014 (the 2019 commits are just admin metadata).
Hmm, let's see ...