93ecfb4ca1
AC-1..AC-4 are the four upstream anomalies of the generic sunspec vendor (setpoint range, read/write mismatch on the rate states, enableDischarging never reconciled, revert timer never written). AC-5..AC-15 are the Fronius-specific behaviour: manufacturer filter, byte order, connection parameters, polling floor, forbidden writes, the HEMS intent to register table, scale factor reread, readback verification and the model 160 block classification. Points the design contract leaves open are recorded as explicit working hypotheses (H-1..H-6) rather than blocking on them.