TaskScope

Registry of keyed coroutine tasks scoped to a parent CoroutineScope.

Use one instance per lifecycle owner (ViewModel via taskScope(), Composable via rememberTaskScope()).

Implementations must treat Idle/Running resets as identity-guarded: when a job completes, the key returns to TaskJobState.Idle only if that same Job instance is still registered. Concurrent launch/cancel/ and completion callbacks are safe from any thread.