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expose: buy/sell_price_now follow the live dual-tariff slot

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Subscribe the separate DSMR tariff topic (dsmr/meter-stats/electricity_tariff,
1=dal/off-peak, 2=normal/peak), keep the latest slot in memory, and make the
manual-contract buy/sell_price_now sensors show the matching tariff's price
(tariff 1 -> dal, 2/unknown -> normal). Tibber (single 15-min price) unchanged.
Billing is untouched (register-split already handles tariffs correctly).

- new config dsmr_tariff_topic; subscribe managed by apply_dsmr_subscription
  (restart-free on config save). In-memory tariff is lock-guarded.
- import_cost_total / export_revenue_total cumulative getters unchanged.
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tliu93
2026-06-24 15:39:21 +02:00
parent 6f8cb05eab
commit 9bc46f8d2d
9 changed files with 578 additions and 12 deletions
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.env.example
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@@ -52,6 +52,9 @@ HA_DISCOVERY_PREFIX=homeassistant
# DSMR_INGEST_ENABLED=false
# DSMR_MQTT_TOPIC=dsmr/json
# DSMR_SAMPLE_INTERVAL_S=10
# DSMR tariff topic: publishes "1" (dal/off-peak) or "2" (normal/peak).
# Empty string disables tariff-aware pricing (buy/sell_price_now always show normal rate).
# DSMR_TARIFF_TOPIC=dsmr/meter-stats/electricity_tariff
# Optional: Tibber dynamic pricing credentials (M6).
# Only used when an active energy contract with kind=tibber is configured.