v0.1.1

Maintenance release.

• Fix hassfest CONFIG_SCHEMA notice (config-entry-only integration)
• HACS CI: ignore brands check (only needed for default-store submission)
• Add grid/inverter per-phase current, load L2/L3 voltage and load frequency sensors (disabled by default)
• Battery Voltage now shows 2 decimal places
• Adds optional precision field to the register map

Install/update via HACS (custom repository).