- Upgrade Badger to v3.2103.0, breaking existing usage (expvar prefix changes, deprecates badger.truncate flag).
- Add multi‑arch Docker images for linux/arm64 and s390x, and enable TLS support for the Prometheus reader.
- Introduce MetricsQueryService with HTTP and gRPC handlers, a monitor tab for service health, and build‑info metrics for Jaeger; also upgrade gRPC to 1.38.x.