fix: debounce grid sensor dropouts and make the failsafe direction configurable - #4
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…nfigurable A single 5 s sensor dropout (e.g. an MQTT reconnect) immediately reset the PID and slammed all PV limits to maximum. For zero-export installations, failing to maximum is exactly the wrong direction. - Hold the current actuator state (integrator frozen) for up to 3 consecutive unavailable grid reads before entering failsafe; the repair issue is only raised when failsafe actually engages. - New "Failsafe behaviour" option: maximize (default, unchanged behaviour, for self-consumption setups) or curtail (PV to minimum, for zero-export requirements). Applies both to grid-sensor outages and to the controller being disabled. - Reset the EWM filter on a full outage so the first cycles after recovery are not biased by stale pre-outage state. Rebased onto dev after the battery-layer (#5) and calibration-guard (#3) merges. https://claude.ai/code/session_01RUWpwxbGsgR3PoLHLq4Djz
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Problem
Fix
GRID_UNAVAILABLE_TOLERANCE_CYCLES) hold the current actuator state with the integrator frozen. The failsafe and the repair issue only engage when the outage persists; a successful read resets the counter.maximize(default, unchanged behaviour) — PV to full output, for self-consumption setups.curtail— PV to minimum, for zero-export installations.The mode applies both to grid-sensor outages and to the controller being disabled via the enable switch.
Tests
tests/test_grid_failsafe.py: hold-then-failsafe sequencing, counter reset on recovery, curtail mode on outage, curtail mode on disable, and filter re-seeding. Full suite: 131 passed.https://claude.ai/code/session_01RUWpwxbGsgR3PoLHLq4Djz
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