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hive-runtime, hive-agent: model/effort picker for ACP agents from configOptions

An ACP agent's model and effort pickers now list what its session offers
(its `model` and `thought_level` config options) instead of the claude
model list and EFFORT_LEVELS. A pick goes through the same Bus::set_model /
Bus::set_effort -> Config.model / Config.effort path as on claude; before
each prompt the ACP runtime sets it with `session/set_config_option`, model
first, and only when the session offers that value. Options are re-read
from the set response and from `config_option_update`, so the effort picker
disappears when the chosen model offers no effort levels, and is hidden
while a newly picked model waits for the next turn.

The session's options reach the web UI through a `Choices` handle from a
new `Runtime::choices`, registered on the bus the way `canceller` is.
/api/model and /api/effort accept only offered values on ACP. The claude
path is unchanged.

Refs #4391
This commit is contained in:
atlas 2026-09-30 07:59:27 +02:00
commit f189724a4c
13 changed files with 559 additions and 44 deletions

View file

@ -635,6 +635,16 @@ async fn serve_main<S: Surface>(socket: &Path, poll_ms: u64) -> Result<()> {
.await
}
/// Hand the bus the session's handles the web UI reads from outside a turn.
fn share_session_handles(bus: &Bus, session: &turn::AgentSession) {
if let Some(canceller) = hive_runtime::Runtime::canceller(session) {
bus.set_turn_canceller(canceller);
}
if let Some(choices) = hive_runtime::Runtime::choices(session) {
bus.set_session_choices(choices);
}
}
/// The long-running message loop. Long-polls the broker via
/// `S::recv_next`, drives a turn per message, parks on auth-failed,
/// otherwise retries.
@ -662,9 +672,7 @@ async fn serve_loop<S: Surface>(
// The durable agent session, built once and reused for every turn +
// idle compaction below (it's effectively stateless).
let session = turn::make_session(&bus)?;
if let Some(canceller) = hive_runtime::Runtime::canceller(&session) {
bus.set_turn_canceller(canceller);
}
share_session_handles(&bus, &session);
// Tracks the last observed pause state so the transitions get logged
// once each instead of twelve lines a minute while parked.
let mut was_paused = false;