Design docs
These are the documents the lessons send you to. The decisions ledger is the why, written down. The house rules and the prescriptions are the pattern the IAM course builds, made checkable. The estate is what the repo manages, which is water park’s own AWS. The threat model is the failure-mode story. The AWS desk is the agent app the courses build. The notes under design/ carry the depth behind single lessons.
Some of these docs were written when water park was an IAM access-repo kit rather than a course, and a few still read that way. Where they name a toolchain, decision 31 is what the course actually runs on. Project planning and archived analysis live outside the site, in project/ .