Initial commit — EMHASS + Deye + NordPool setup

- EMHASS config for Deye SUN-12K + 32 kWh battery, NordPool LV
- Day-ahead optimization automation (14:30 daily) with real battery SOC init
- Forecast vs reality template sensors and dashboard card
- Migration log from Domoticz

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CLAUDE.md

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+# Smart Home Project — HA + Domoticz Migration
+
+## Systems
+
+### Home Assistant (primary, growing)
+- URL: http://192.168.66.113:8123
+- MCP: connected via hass-mcp
+- Entity naming: snake_case
+- Prefer native HA constructs over Jinja2 templates
+- Always confirm before deleting automations or entities
+
+### Domoticz (legacy, stable)
+- URL: http://192.168.66.157:8080
+- API: no auth required (trusted IP)
+- API endpoint: http://192.168.66.157:8080/json.htm
+- Full access granted — changes allowed when explicitly requested
+
+## Migration Strategy
+- Pace: slow, step by step — nothing is broken, no rush
+- Approach: replicate one device/automation at a time in HA
+- Before migrating anything: query Domoticz API to understand current state
+- After migrating: verify HA entity works before suggesting Domoticz removal
+- Keep a running log in `migration_log.md` in this directory
+
+## Workflow Rules
+- Always check both systems before suggesting changes
+- Prefer additive changes (add to HA) over removing from Domoticz
+- When creating automations in HA, follow existing snake_case naming
+- Ask before any bulk operations
+- Never delete from Domoticz without explicit confirmation, even with full access
+
+
+## Energy System
+
+### Inverter
+- Model: Deye SUN-12K-SG04LP3-EU
+- Integration: deye-inverter-mqtt (Docker: ghcr.io/kbialek/deye-inverter-mqtt)
+- Data arrives via MQTT → HA sensors
+
+### Battery
+- Capacity: 32 kWh
+- Connected to Deye inverter
+
+### EV Charger
+- Brand: OpenEVSE
+- Integration: OpenEVSE HA integration
+
+### Spot Prices
+- Integration: NordPool, zone: LV
+- Currency: EUR/MWh
+
+### EMHASS
+- Add-on URL: http://192.168.66.113:5000
+- Config file: /config/emhass/config_emhass.yaml
+- Goal: minimize electricity bill via solar self-consumption, 
+  battery charge/discharge, and EV charging schedule optimization
+- Do not write config_emhass.yaml until sensor discovery is complete
+  and all critical entity IDs are confirmed