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/mosaic-telemetry/index.ts

@@ -0,0 +1,17 @@
+/**
+ * Mosaic Telemetry module — task completion tracking and crowd-sourced predictions.
+ *
+ * **Not to be confused with the OpenTelemetry (OTEL) TelemetryModule** at
+ * `src/telemetry/`, which handles distributed request tracing.
+ *
+ * @module mosaic-telemetry
+ */
+
+export { MosaicTelemetryModule } from "./mosaic-telemetry.module";
+export { MosaicTelemetryService } from "./mosaic-telemetry.service";
+export {
+  loadMosaicTelemetryConfig,
+  toSdkConfig,
+  MOSAIC_TELEMETRY_ENV,
+  type MosaicTelemetryModuleConfig,
+} from "./mosaic-telemetry.config";