## Motivation
A prompt sent while Claude Code runs a turn it started on its own, for
example after a background task finished, is folded into that turn. The
turn's result keeps `origin: task-notification` but lists the prompt in
`user_message_uuids`. The adapter routed results by origin only, so
`session/prompt` was never answered and the client stayed in a running
state. A JetBrains AIR session stayed "running" for hours this way.
## Change
A task-notification result that names a pending prompt now answers it. A
turn held for its subagents still waits for them. Results without the
uuids behave as before.
## Tests
Unit tests in `acp-agent.test.ts` and a replay of the session in
`folded-prompt-scenario.test.ts`. Both hang without the fix.
390b0b9f8b