Implementation guides

Hands-on guides for building the platform's code: the API framework and request lifecycle, the repository/provider adapters, and the RBAC / comms-author implementation.

Doc	Covers
api-framework.md	Request lifecycle, Clerk JWT middleware, RBAC guards, controller/service/repository pattern
repository-adapters.md	Repository + provider interfaces and their Postgres / Storage / SMS / Email adapters
rbac-comms-author.md	requireRole middleware, comms_author capabilities, announcement state machine

Status: forward-looking — these describe how the code will be built (Epic AB#3074); no code exists yet.