salmanoff/docs/prompts/caller-posts-to-own-io-context.md

Caller post-back uses getSelf io_context

Viral posting invokers resume the caller on the thread that issued co_await, using callerIoContext captured from ComponentThread::getSelf() at promise construction time.

Dynamic ExplicitPostTarget only affects post-TO (initial_suspend), not post-back.

See post-to-and-back-in-invokables.md.