Lo and behold, my new and improved scripts, which implement the following logic:
Create a single Master Control Job with an hourly schedule, and also set it to run when SQL Agent is started up. The Master Control Job will do the following:
Automatically detect which jobs have steps that run on databases that are involved in an HADR solution.
For each such job, automatically detect whether there’s at least one step run on a database which currently has the Primary/Principle role.
If so, make sure it’s enabled. Otherwise, make sure it’s disabled.
Create an alert for a role/state change event, if such doesn’t exist yet, and set it to run the Master Control Job when triggered.
Click through for more details and links to scripts for Availability Group and database mirroring scenarios.