agents-canonical-rules-async

name	agents-canonical-rules-async
description	Canonical rules — cubit lifecycle, subscriptions, timers, stream safety, widget async/mounted, coordinators. Part of agents-canonical-rules split.

Lifecycle & async safety

Slice of agents-canonical-rules. Canon: agents-shared-patterns, agents-common-pitfalls, docs/CODE_QUALITY.md.

Open when touching cubit emit/subscriptions/timers/streams/mounted — full rules in shared patterns + CODE_QUALITY, not here.