v4.2.3 — battery detection fix

Fixed

• Battery Health now counts an entity as a battery level only when its device_class is battery or its unit is % (value 0–100). Battery+ / Battery Notes helper entities (*_battery_type, *_battery_quantity) are no longer shown as battery levels. Fixes #1 (devices wrongly shown at ~2%).

Docs

• Added a real card screenshot to the README.