v0.5.0

Major overhaul of the integration. Stable release of the work from #113.

Bug fixes

• current_power is now a power sensor in Watts (was wrongly energy/kWh).
• Removed the invalid CO2 device class on CO2-saved (now kg).
• Fixed the "economy of last 30 days" sensor reading the wrong value.
• Valid device identifiers per plant / inverter / datalogger.
• Notification service calls are now awaited — critical alerts and dismiss actually fire.
• Per-entry unique IDs; notification timer cancelled on unload.
• Monetary sensors use the account currency instead of a hardcoded $.

New & improved

• Two-step setup: enter email + "plus", then pick your plant from a list. Supports multiple plants (one entry each; already-added plants are filtered out).
• Automatic currency detection from the account (closes #25).
• Multi-inverter support and microinverter support (parallel /inverters + /microinverters fetch, defensive merge — credit @murilobast, #104).
• New sensors: yearly energy (kWh), per-inverter temperature/power/energy/status/serial/last-record, per-datalogger firmware/MAC/RSSI/last-record.
• Token caching; configurable update interval (options), re-auth flow, diagnostics.
• Full Portuguese translation (pt and pt-BR) and English.

Under the hood

• ~25 hand-written sensor classes replaced by a description-driven design.
• New pytest suite (26 tests); ruff, hassfest and HACS validation pass.

Update via HACS and restart Home Assistant.