While I understand the appeal of having local files that agents can read, I think the best way to do it might be pulling the needed files from a database. By its nature, tasks are linked in relationships of parenthood and sequence, so databases are naturally suited for storage. Plus, they need ownership relations. So, something like Jira but please oh god not Jira, where you can pull a subset of the DB (for example a project) locally and have some script generate the needed files (requirements) from what would be a Jira description.