Decisions

Architecture decision records (ADRs): one page per decision that shapes the code, with its context, the options considered and the consequences. A record is not rewritten after it is accepted; a later record supersedes it. The Flux V1 HAL is built the same way and records the same three decisions.

ADR	Title	Status
0001	Keep the MCU behind the interface wrap; only managers know the board	Accepted
0002	Allocate once at start-up; fixed tables sized from the pin map	Accepted
0003	The hf-pincfg X-macro table is the single source of pin truth	Accepted

Start a new record from the template.