"I can only watch one terminal at a time."
You don't watch any of them. Questions from every project land in one list, most with the answer the agent recommends. Answer one and that agent carries on.
For one developer with many projects
The day job, a side project, the library with forty open issues. You can watch one terminal at a time. Overhand keeps an agent on each of them and shows you all of it on one screen.
You don't watch any of them. Questions from every project land in one list, most with the answer the agent recommends. Answer one and that agent carries on.
Set it once per project: Plan and warn only on the library, Draft PRs only on the day job, Build and open PRs or Ship on your own app. Agents read the rule before they start.
Each pull request arrives with the checks it ran. A red check gets a fix round before it reaches you.