v2.6.3

Fixed

• Feedthrough values now derived via Kirchhoff instead of read from downstream-lugs — SpanPanelSnapshot.feedthrough_power_w, feedthrough_energy_consumed_wh, and feedthrough_energy_produced_wh are computed as main − Σ(branches) inside
  HomieDeviceConsumer._build_snapshot (and mirrored in the dirty-circuit rebuild path) rather than sourced from the native energy.ebus.device.lugs.downstream active-power / imported-energy / exported-energy properties. Kirchhoff at the main bus
  produces a physically-consistent result: P_main = P_feedthrough + Σ(branches, load-perspective) for instantaneous power, and the same identity applied to net energy (main.consumed − main.produced − Σ(branch.net)) split into non-negative consumed /
  produced counters. Net-based energy handling is required because a per-direction subtraction would emit negative cumulative counters whenever circuits flow bidirectionally (the classic case is PV self-consumption: Σ(branch.consumed) can exceed
  main.consumed even when the net balance is valid). The synthesized PV virtual circuit participates with the correct load-perspective sign, and unmapped tab entries are zero-power, so both contribute safely to the sum. No public interface change — field
  names and types are unchanged; only the source of the values shifts. downstream_l1_current_a / downstream_l2_current_a continue to be read directly from the downstream-lugs node — those per-phase readings are orthogonal to the defect. The underlying
  firmware defect is tracked upstream at spanio/SPAN-API-Client-Docs#13.