feat(#369): install @mosaicstack/telemetry-client in API

- Add .npmrc with scoped Gitea npm registry for @mosaicstack packages
- Create MosaicTelemetryModule (global, lifecycle-aware) at
  apps/api/src/mosaic-telemetry/
- Create MosaicTelemetryService wrapping TelemetryClient with
  convenience methods: trackTaskCompletion, getPrediction,
  refreshPredictions, eventBuilder
- Create mosaic-telemetry.config.ts for env var integration via
  NestJS ConfigService
- Register MosaicTelemetryModule in AppModule
- Add 32 unit tests covering module init, service methods, disabled
  mode, dry-run mode, and lifecycle management

Refs #369

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/api/src/app.module.ts

@@ -37,6 +37,7 @@ import { JobStepsModule } from "./job-steps/job-steps.module";
 import { CoordinatorIntegrationModule } from "./coordinator-integration/coordinator-integration.module";
 import { FederationModule } from "./federation/federation.module";
 import { CredentialsModule } from "./credentials/credentials.module";
+import { MosaicTelemetryModule } from "./mosaic-telemetry";
 import { RlsContextInterceptor } from "./common/interceptors/rls-context.interceptor";
 
 @Module({
@@ -97,6 +98,7 @@ import { RlsContextInterceptor } from "./common/interceptors/rls-context.interce
     CoordinatorIntegrationModule,
     FederationModule,
     CredentialsModule,
+    MosaicTelemetryModule,
   ],
   controllers: [AppController, CsrfController],
   providers: [