Development architecture ======================== The Go module is ``rtcord-v81`` and targets Go 1.26.5. The standard ``net/http`` default mux is used; route registration remains in ``main.go``. Handlers use ``database/sql`` with MySQL ``?`` placeholders and UUID strings. Passwords are bcrypt hashes. Keep transport concerns in ``handlers/``, shared domain types in ``types/``, startup and runtime wiring in ``main.go``, and browser source in ``site/``. When adding an endpoint, update the route registration, its domain handler, ``API.md``, and the matching RST page.