The home daemon's `POST /api/sessions` (peer `daemon_id`) and
`DELETE /api/sessions/:id` (peer-owned) now broker the op to the owning daemon
over the registry control link rather than returning 501/404. This fixes
cross-daemon spawn/kill for *all* local clients — notably maestro-web, which
talks only to the local daemon and had no registry fallback.
- broker: `BrokerHandle::{forward_create,forward_kill}` + completion handlers,
mirroring `resolve_attach` (fail-fast while disconnected, RAII pending
cleanup, RESOLVE_TIMEOUT).
- registry_client: route `Forward{Create,Kill}Result` back to the broker.
- local_api: create forwards on peer `daemon_id`; kill looks up the owner in
the catalog mirror and forwards (only a truly-unknown session is 404).
`broker_error_response` maps BrokerError → HTTP (503/504/502/404/...).
- cli: thread the broker into `LocalApiState`.
Tests: broker round-trip / fail-fast / registry-err propagation; updated the
local_api integration test (peer create now 503s without a registry link
instead of 501, proving it brokers).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
naps62-yoloandClaude Opus 4.8
1e4b65c73c