Charter writes architecture, decisions, API, and security notes from the code, in the standards a client already expects.
One decision, the options, and why this one won. It is a file in the project, so the handoff is the repository.
Sessions live in the Postgres database the deployment already runs.
Postgres, or a separate Redis. Redis lost because a client handoff should not add a second store to back up.
Accepted. The note at the bottom was written by the team, and it stays when the page is updated.
A later change marks the pages that depend on it. The others are left alone. A draft is built from the evidence for that page, so the model is not sent the rest of the repository.