Release Notes

v0.9.1b6

Issues: #307

Fix: energy_today rises through the night on SPH hybrid inverters (Issue #307):
On SPH (and WIT) hybrid inverters the hardware register for energy_today (reg 53/54)
counts total AC system output, including battery discharge — not solar generation only.
The integration normally avoids this by summing the per-MPPT DC string registers
(pv1_energy_today + pv2_energy_today), which track PV input only.

However, the guard condition checked pv*_energy_today > 0 before using the MPPT sum.
After the inverter's daily energy counters reset to zero at midnight, all MPPT values
return 0, the guard evaluated False, and the code fell back to register 53/54 — which
then climbed through the night at a rate matching house load (battery powering the house).

Fixed by gating on register address existence rather than value > 0. If the profile
defines per-MPPT energy registers (which all SPH/WIT profiles do), the MPPT sum is always
used — including when it is zero. Zero at night is the correct value.