v2.7.4-beta.1

Beta Release — v2.7.4-beta.1

Bug Fixes

• Resilient periodic updates — read_meters() no longer raises UpdateFailed when read_meter_info or read_historical_data fail. Each call logs a warning and continues instead of marking the sensor unavailable.
• Add unit_class to cost statistics — cost statistic metadata now includes unit_class=monetary, fixing the HA 2026.11 deprecation warning.

PR

#171