v2.3

New: structured attributes on alarm sensors

Each alarm sensor now exposes the following extra_state_attributes:

• location — e.g. URBINO, PESARO
• frequency_mhz — e.g. 103.0
• station_name — e.g. KISS (the leading 103.0 from the SNMP-side name is stripped)
• alarm_type — RF, MPX, Pilot, or RDS
• level_entity_id — the matching *_level sensor for this alarm
• level_unit — dBμV for RF, kHz otherwise

This lets automations and dashboards read fields directly via state_attr() instead of parsing friendly_name, which Home Assistant composes as \"{device.name} {entity.original_name}\" and produces a duplicated prefix (e.g. \"103.0 KISS DEVA_URBINO 103.0 KISS RF Alarm\").

See the README changelog for full version history.