v0.6.25 — Passat PHEV flat charge rate (#27)

Summary

Adds a curated Charge rate sensor for flat-format PHEVs (e.g. VW Passat, Golf) that expose actual_charge_rate and charge_rate_unit instead of the dotted battery_state_report.* fields (#27). No scaling change — raw portal values are shown as delivered.

Charge rate ≠ charge power. For wallbox power in kW, use Charge power (charging_power on flat PHEVs, battery_state_report.charge_power on ID.x/MEB). Charge rate is range gained over time (km/h or mi/h).

Flat PHEV charge rate (#27)

• actual_charge_rate — curated flat sensor with mdi:speedometer, unit resolved from companion charge_rate_unit (km_per_h, miles_per_h, etc.).
• resolve_charge_rate_unit — maps flat unit strings in addition to existing CHARGE_RATE_UNIT_* enums; invalid yields no unit.
• Unit gating — same invalid/unusable-reading rules as the dotted charge-rate sensor apply to actual_charge_rate.
• Translations — actual_charge_rate entity name in EN/DE/FR/IT/NL.

Legacy helper: Monthly electric consumption

If you upgraded from v0.6.22 or earlier, you may still have a utility_meter helper named Monthly electric consumption. The integration no longer creates this helper (removed in v0.6.23, #24) — it summed driving-efficiency readings (kWh/100km) and produced meaningless monthly totals.

• Delete the old helper under Settings → Devices & services → Helpers if it is still present.
• Use instead: Monthly charged energy (kWh) for monthly charging totals.

Test plan

• Reload integration after update (or restart HA)
• On flat PHEV payloads: verify Charge rate (actual_charge_rate) appears with correct unit (km/h / mi/h)
• Compare Charge power vs Charge rate during charging — power in kW, rate in km/h or mi/h
• Delete legacy Monthly electric consumption helper if still present; use Monthly charged energy instead