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the edges on your DAG need to carry metadata about how long the action can/must/should be delayed (no active work), and the nodes (tasks) must carry metadata on how long the task takes.Yes, those are all constraints that need to be stored there. Some of them are fixed, others can be computed when optimizing the plan.
It's also information you should have specified on the recipe. Most of it usually isn't, as it's either obvious[0] or the recipe author doesn't even realize it's a parameter.
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[0] - Some obvious to anyone, some obvious to someone very experienced at cooking. Confusing them makes things really difficult for beginners.
