Reshape boiler data

solar_relay/config.py

@@ -51,6 +51,7 @@ class InverterConfig:
     boiler_pin: str = "pin1"
     request_timeout_seconds: float = 5
     min_request_interval_seconds: float = 4
+    boiler_threshold_w: float = 2000
 
 
 @dataclass(frozen=True)
@@ -163,6 +164,9 @@ def load_config(path: Path) -> Config:
         raise ValueError("inverter.boiler_pin must be pin1, pin2, pin3 or pin4")
     _number(inverter.request_timeout_seconds, "inverter.request_timeout_seconds", 0.1)
     _number(inverter.min_request_interval_seconds, "inverter.min_request_interval_seconds", 4)
+    _number(inverter.boiler_threshold_w, "inverter.boiler_threshold_w", 0.01)
+    if inverter.boiler_threshold_w > 99_999_999.99:
+        raise ValueError("inverter.boiler_threshold_w exceeds the stored watts range")
     upload = UploadConfig(**data.get("upload", {}))
     if not isinstance(upload.url, str):
         raise ValueError("upload.url must be a string")