effection-integration

Integrate effection structured concurrency into FluidFramework packages. Use when adding effection-based lifecycle management, replacing setTimeout/clearTimeout with scope-aware timers, bridging AbortSignal patterns with effection scopes, or introducing structured concurrency to a package that currently uses imperative dispose/close patterns. Triggers on mentions of effection, structured concurrency, EffectionScope, EffectionTimer, scope-aware cleanup, or scoped abort controllers in the FluidFramework repo.