UPDATE

crop_simulation/recommendation_optimizer.py

@@ -19,6 +19,11 @@ def _safe_float(value: Any, default: float = 0.0) -> float:
         return default
 
 
+def _mm_to_cm_day(value: Any, default: float) -> float:
+    scaled = _safe_float(value, default * 10.0) / 10.0
+    return round(max(scaled, 0.0), 4)
+
+
 def _clamp(value: float, lower: float, upper: float) -> float:
     return max(lower, min(value, upper))
 
@@ -113,7 +118,7 @@ def _build_weather_records(forecasts: list[Any], *, latitude: float, longitude:
         vap = max(6.0, round((humidity / 100.0) * 20.0, 3))
         wind_kmh = _safe_float(getattr(forecast, "wind_speed_max", None), 7.2)
         wind_ms = round(wind_kmh / 3.6, 3)
-        et0 = _safe_float(getattr(forecast, "et0", None), 0.35)
+        et0 = _mm_to_cm_day(getattr(forecast, "et0", None), 0.35)
         records.append(
             {
                 "DAY": forecast.forecast_date,
@@ -125,7 +130,7 @@ def _build_weather_records(forecasts: list[Any], *, latitude: float, longitude:
                 "TMAX": tmax,
                 "VAP": vap,
                 "WIND": wind_ms,
-                "RAIN": _safe_float(getattr(forecast, "precipitation", None), 0.0),
+                "RAIN": _mm_to_cm_day(getattr(forecast, "precipitation", None), 0.0),
                 "E0": et0,
                 "ES0": max(et0 * 0.9, 0.1),
                 "ET0": et0,