May 2025 monthly summary for evcc-io/evcc: key features delivered and resilience improvements for Tibber Pulse. Delivered User Agent enhancement including EVCC version, refactor of getUserAgent, and log message; and websocket stability improvements with robust error handling, reconnection logic, unauthorized/too many init request handlers, and exponential backoff. These changes improved uptime, observability, and traceability of real-time data streams from Tibber Pulse.

April 2025 (2025-04) focused on improving Tibber integration observability by enhancing the User-Agent string. Delivered a more descriptive User-Agent that includes evcc version and graphql-client version to improve client identification, observability, and debugging. This change improves log filtering, issue reproduction, and support responsiveness, while keeping scope small and low-risk. No major bugs fixed this month; the work centered on instrumentation readiness and telemetry groundwork. Impact: clearer telemetry for Tibber connections, faster triage, and a solid foundation for future GraphQL client improvements. Technologies/skills demonstrated: Go, HTTP client customization, version-aware User-Agent composition, integration testing, observability best practices.