- docs/WhatsNew.md: append a user-facing entry describing the new
local-mutable-state block — what it does, what it does not yet
cover (heap-Str and user ADTs), the two example fixtures, and
the broader streaming-workloads motivation. No internals.
- docs/roadmap.md: the Stateful-islands milestone flips from [ ] to
[~] (in progress). A Progress paragraph records sub-milestone 1
(mut-local) as closed with its commit references, and enumerates
the remaining sub-milestones (effect-handler infrastructure,
refs + !Mut, MutArray, Stateful + pipe) — each to be brainstormed
separately so each one stays small and audit-friendly.
Brummel
8685e96970