refactor(openflare): migrate console APIs to v1 and centralize routing

Move OpenFlare management endpoints to /api/v1/custom/openflare with
Wavelet response envelopes and Abort* error handling. Keep agent, relay,
and flared protocol routes on /api/* with the legacy compat format.

- Add apiutil helpers and Swagger annotations for console handlers
- Register all OpenFlare routes in internal/router/openflare (not apps)
- Switch frontend services to OpenFlareBaseService and v1 paths
- Remove dead auth/compat code and legacy-base.service.ts
- Update integration tests and changelog

Wavelet/frontend/lib/services/openflare/uptimekuma.service.ts

@@ -1,9 +1,9 @@
-import {LegacyOpenFlareBaseService} from './legacy-base.service';
+import {OpenFlareBaseService} from './base.service';
 
-export class UptimeKumaService extends LegacyOpenFlareBaseService {
-  protected static override readonly basePath = '/api/uptimekuma';
+export class UptimeKumaService extends OpenFlareBaseService {
+  protected static override readonly basePath: string = '/api/v1/custom/openflare/uptimekuma';
 
   static sync(): Promise<void> {
-    return this.legacyPost<void>('/sync');
+    return this.post<void>('/sync');
   }
-}
+}