When release() fails (False, raises or hangs past RELEASE_BUDGET_S) the unit gets one bounded write(0) through the new Driver.release_fallback() hook (default write(0)), then nothing more, so the inverter's own fallback timer is not reset. The release is retried once per heartbeat, not on every idle write. One error line and one action-log event per failure streak, one line on recovery. Dutch default "terug naar de eigen sturing". DECISIONS says what a unit is left at. test_messages.py: the RELEASE_BUDGET_S data entry is gone again (the line that needed it is gone). Co-Authored-By: Claude <noreply@anthropic.com>