main
fix(№513): std/concurrency — Channel.new → Channel[T].new (4 сайта)
lint(244 Ф.1): Vec[T] -> []T вне std/collections/vec (W_VEC_SPELLING, D238/D239)
style(std): D452 — migrate to canonical match-arm/statement separators
docs(endocs): text/checksums/concurrency/crypto — translate /// docs to English
195: std/ -> std/src/ (git mv, module-path без изменений)
merge: comment-hygiene-2 — чистка комментариев std (batch 1-20) + линт-свип 330→13
wip(200-duration-chain): checkpoint Шаг 2 частично
feat(concurrency): supervised(cancel:) returns Outcome[T] (Plan 266, D455)
feat(D449): add supervised(on_timeout:) handler
docs(endocs): text/crypto/concurrency/data/math/testing — translate /// docs to English
fix(lint,№463): зачистка корпуса под W_REDUNDANT_PAREN — 0 находок в std/spec_tests/examples