Julian Pawlowski 1b207f0db1 fix(services): correct min_distance_from_avg direction for negative prices ... check_min_distance_from_avg() computed the distance threshold as range_avg * (1 ± ratio). Tibber prices can go negative during grid oversupply, and multiplying a negative range_avg directly flips the intended direction: e.g. avg * 1.05 makes a negative average MORE negative (i.e. cheaper), which is the wrong direction for a "most expensive" threshold check, and analogously wrong for "cheapest" checks. Compute the threshold as range_avg ± abs(range_avg) * ratio instead, matching the sign-safe normalization pattern already used for min_distance_from_avg in the period system (coordinator/period_handlers/level_filtering.py). Behavior for positive averages (the common case) is unchanged. Used by find_cheapest_block, find_cheapest_hours, and plan_charging. Impact: min_distance_from_avg now correctly filters cheapest/most expensive windows during negative-price periods instead of silently accepting windows in the wrong direction relative to the search range average.		2026-07-04 18:23:06 +00:00
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tibber_prices	fix(services): correct min_distance_from_avg direction for negative prices	2026-07-04 18:23:06 +00:00