Modules
Mutates the enqueue options of an Oban job — the keyword options passed when a job is
built (MyWorker.new(args, max_attempts: 3, unique: [...], schedule_in: 60)). These options
encode the job's retry / dedup / scheduling policy, so dropping or weakening one asks the
suite a pointed question.
Swaps the return value of an Oban worker callback (perform/1, and Pro's process/1)
for a different but still valid Oban outcome — the higher-signal analogue of
Mutare.Mutators.ReturnValue's sentinel.