You now have the whole department: a house style (the handbook), drafting (production), repurposing (distribution), the fact gate and drift check (QC). The last step is writing it down as a pipeline: five named steps, each with its saved prompt and its model of choice, run in the same order every time.
That document is the difference between 'I use AI for content' and 'I run a content department.' It survives model updates — when a new model ships, you race it against the incumbent at each step and promote it only where it wins. The pipeline is stable; the staff is swappable.
Final seed: a full mini-pipeline run in one prompt. Judge the outputs like a department head reviewing an employee's week — then build your own version, one saved prompt per step.