- Breaking: `cmd/builder` now uses relative replace paths in generated go.mod (with opt‑out flag) and `receiver/otlp` restructures Config.Protocols to a named field.
- Features: Declarative schema support for service telemetry resources; OTLP exporters add `server.address` and `url.path` metric attributes; added UserAgent override, gRPC resolver URI handling, Windows named pipe transport, and exporter ...
- Deprecation & fixes: `DefaultMetricsBuilderConfig` deprecated in favor of `NewDefaultMetricsBuilderConfig`; numerous bug fixes and Run/Shutdown lifecycle synchronization improvements.