feat(api): absorb the Hub control plane into the local instance model

Add central notification channels, rules, queue and delivery logs, fleet
organization groups and tags, device discovery, the device action catalog,
instance module reads, the log centre, connection settings and system
maintenance as native /api/v1 routes backed by the existing secret store,
audit trail and pinned upstream transport.

apps/api/src/infrastructure/transport/pinned-http-requester.ts

@@ -10,7 +10,7 @@ import { asUpstreamError, UpstreamError } from './upstream-error.js';
 
 export interface PinnedDispatchOptions {
   readonly url: URL;
-  readonly method: 'GET' | 'POST';
+  readonly method: 'GET' | 'POST' | 'DELETE';
   readonly headers: Readonly<Record<string, string>>;
   readonly body?: string;
   readonly lookup: LookupFunction;