v0.1.23

What's new

• Stromkosten sensor: accumulates electricity cost (grid import × dynamic price)
• Einspeisevergütung sensor: accumulates feed-in revenue (grid export × configurable tariff)
• Günstiger Strom binary sensor: ON when current price is below the daily average — useful for automations
• Batterie Ladeenergie / Entladeenergie sensors: split battery power into two TOTAL_INCREASING sensors for the Energy Dashboard
• Options flow: feed-in tariff configurable via Settings → Devices & Services → 1KOMMA5° → Configure (default: 0.0803 €/kWh)
• Dashboard: new Preise und Kosten view with cost/revenue statistics and monthly bar chart; updated screenshots