Expose the daemon-side spawn data (#24 recents, #25 gitroot, #22 presets) to
the web, mirroring the NAP-329 ListDir broker plumbing end to end so it works
across federated hosts.
Wire (maestro-protocol): `RecentDir`/`RecentDirs`/`GitRoot` payloads;
`DaemonInbound::RecentDirs`/`GitRoot` requests + `ForwardRecentDirs`/
`ForwardGitRoot` relay pairs + their `*Result` replies on both enums. All
forward-compatible via the existing `RpcResult` + `#[serde(other)] Unknown`.
Relay (broker + registry + registry_client): home daemon → registry → owning
daemon → back, with the same fail-fast-while-disconnected + RAII pending-entry
cleanup discipline as ListDir. The owning daemon answers RecentDirs from its
spawn history and GitRoot by resolving the path against its home dir
(shared `dirlist::resolve`) then walking up via `gitroot::find_root`.
Daemon HTTP (maestro-daemon):
- GET /api/daemons/:id/recent-dirs → RecentDirs
- GET /api/daemons/:id/gitroot?path= → GitRoot
- Presets ride GET /api/web/info (the documented DaemonInfo sibling) so the
form needs no extra round-trip; resolved once at startup from [spawn].presets
(a bad preset list now refuses startup).
Tests: protocol round-trip + forward-compat for the new variants; broker
forward round-trips + fail-fast; HTTP handler tests (self recents/gitroot,
presets advertisement, peer 503 without a registry link).
Closes#26
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>