Catches the Dart bindings up to the platform's gRPC additions:
* `searchStore({query, category, tag, status, limit})` — wraps
HubAdmin.SearchStore so Studio can build a Store browser
page.
* `installModule({source, expectedSha256})` — wraps
HubAdmin.InstallModule so the operator can one-click install
a `.fai` bundle from the UI.
* `channelStatus()` — new HubAdmin.ChannelStatus RPC. Returns
active channel name + per-channel running flag + endpoint.
Re-exports the new proto types (StoreEntry,
StoreSearchResponse, InstallModuleResponse, ChannelStatusResponse,
ChannelEntry) so callers don't import protobuf directly.
LoggedEvent gains a `detail` field (free-form JSON string)
upstream; the regenerated bindings expose it without further
work — Studio's audit drill-down renders it pretty-printed.
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
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