- Breaking: removed SAMPLING TYPE env var and switched containers to a non‑root user, requiring file ownership changes for Badger storage.
- Feature: added Cassandra compaction window config, Jaeger v2 single‑binary based on OpenTelemetry collector, Kafka consumer metrics tag, HTTP proxy support, and dynamic Elasticsearch password reload.
- Bugfix & deprecation: fixed query alert rule, test flakiness, closed Elasticsearch client properly, and added deprecation warnings for agent, gRPC storage plugin sidecar, span‑metrics naming convention, and expvar metrics.