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

internal/sinks/postgres/map.go

@@ -37,7 +37,7 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	}
 
 	observedAt := obs.Timestamp.UTC()
-	writes := make([]fksinks.PostgresWrite, 0, 1+len(obs.CloudLayers)+len(obs.PresentWeather))
+	writes := make([]fksinks.PostgresWrite, 0, 1+len(obs.PresentWeather))
 
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableObservations,
@@ -52,39 +52,20 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 			"station_name":              nullableString(obs.StationName),
 			"observed_at":               observedAt,
 			"condition_code":            int(obs.ConditionCode),
-			"condition_text":            nullableString(obs.ConditionText),
 			"is_day":                    nullableBool(obs.IsDay),
-			"provider_raw_description":  nullableString(obs.ProviderRawDescription),
 			"text_description":          nullableString(obs.TextDescription),
-			"icon_url":                  nullableString(obs.IconURL),
 			"temperature_c":             nullableFloat64(obs.TemperatureC),
 			"dewpoint_c":                nullableFloat64(obs.DewpointC),
 			"wind_direction_degrees":    nullableFloat64(obs.WindDirectionDegrees),
 			"wind_speed_kmh":            nullableFloat64(obs.WindSpeedKmh),
 			"wind_gust_kmh":             nullableFloat64(obs.WindGustKmh),
 			"barometric_pressure_pa":    nullableFloat64(obs.BarometricPressurePa),
-			"sea_level_pressure_pa":     nullableFloat64(obs.SeaLevelPressurePa),
 			"visibility_meters":         nullableFloat64(obs.VisibilityMeters),
 			"relative_humidity_percent": nullableFloat64(obs.RelativeHumidityPercent),
 			"apparent_temperature_c":    nullableFloat64(obs.ApparentTemperatureC),
-			"elevation_meters":          nullableFloat64(obs.ElevationMeters),
-			"raw_message":               nullableString(obs.RawMessage),
 		},
 	})
 
-	for i, cl := range obs.CloudLayers {
-		writes = append(writes, fksinks.PostgresWrite{
-			Table: tableObservationCloudLayers,
-			Values: map[string]any{
-				"event_id":    e.ID,
-				"layer_index": i,
-				"observed_at": observedAt,
-				"base_meters": nullableFloat64(cl.BaseMeters),
-				"amount":      nullableString(cl.Amount),
-			},
-		})
-	}
-
 	for i, pw := range obs.PresentWeather {
 		rawText, err := compactJSONText(pw.Raw)
 		if err != nil {