An app-owned delegated child wrote its result into the parent projection but
never started a parent run, so an async delegation's result sat unread until the
user's next message. Offer a provider continuation request when a delegated
child terminalizes, with a per-task completionWake policy separating async
delegations from blocking waits.

The wake must also reach the model. ProviderContinuationRequests is a
provider-native mechanism whose dispatch only triggers ingestion of output the
adapter already buffered, and both ClaudeAdapterV2 and AcpAdapterV2 discard the
message text when it is marked creationSource provider. An app-owned child
buffers nothing, so a wake marked that way settled instantly having prompted
nothing. App-owned wakes now dispatch as message_text via a shared
delegatedTaskWakeRequest helper used by both producers.

Co-authored-by: codex <codex@users.noreply.github.com>