Updated the normalized observation schema to remove duplicate and/or unnecessary fields

internal/normalizers/openweather/observation.go

@@ -75,10 +75,10 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 	}
 
 	surfacePa := normcommon.PressurePaFromHPa(parsed.Main.Pressure)
-	var seaLevelPa *float64
+	barometricPa := &surfacePa
 	if parsed.Main.SeaLevel != nil {
 		v := normcommon.PressurePaFromHPa(*parsed.Main.SeaLevel)
-		seaLevelPa = &v
+		barometricPa = &v
 	}
 
 	wsKmh := normcommon.SpeedKmhFromMps(parsed.Wind.Speed)
@@ -96,9 +96,6 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 
 	// Condition mapping: OpenWeather condition IDs -> canonical WMO code vocabulary.
 	wmo := mapOpenWeatherToWMO(owmID)
-	canonicalText := standards.WMOText(wmo, isDay)
-
-	iconURL := openWeatherIconURL(icon)
 
 	stationID := openWeatherStationID(parsed)
 	stationName := strings.TrimSpace(parsed.Name)
@@ -111,15 +108,9 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 		StationName: stationName,
 		Timestamp:   ts,
 
-		ConditionCode: wmo,
-		ConditionText: canonicalText,
-		IsDay:         isDay,
-
-		ProviderRawDescription: rawDesc,
-
-		// Human-facing legacy fields: populate with canonical text for consistency.
-		TextDescription: canonicalText,
-		IconURL:         iconURL,
+		ConditionCode:   wmo,
+		IsDay:           isDay,
+		TextDescription: rawDesc,
 
 		TemperatureC:         &tempC,
 		ApparentTemperatureC: apparentC,
@@ -128,8 +119,7 @@ func buildObservation(parsed owmResponse) (model.WeatherObservation, time.Time,
 		WindSpeedKmh:         &wsKmh,
 		WindGustKmh:          wgKmh,
 
-		BarometricPressurePa: &surfacePa,
-		SeaLevelPressurePa:   seaLevelPa,
+		BarometricPressurePa: barometricPa,
 		VisibilityMeters:     visM,
 
 		RelativeHumidityPercent: &rh,