Add an hourly forecast module and adjust the daily summary for consistency

internal/briefing/derived_daily_summary_module.go

@@ -85,10 +85,7 @@ func derivedDailySummaryValue(summary forecast.DailySummary, timing forecast.Pre
 	if maxGust != nil {
 		value.MaxWindGustMph = roundedInt(&maxGust.Value)
 	}
-	value.DominantConditions = narrativeConditions(summary.NarrativePeriods)
-	if len(value.DominantConditions) == 0 {
-		value.DominantConditions = sortedSet(conditions)
-	}
+	value.DominantConditions = sortedSet(conditions)
 	value.Hazards = sortedSet(hazards)
 	return value, nil
 }
@@ -144,22 +141,6 @@ func narrativeMaxPrecipitation(periods []weatherdata.ForecastPeriod) *forecast.T
 	return maxPop
 }
 
-func narrativeConditions(periods []weatherdata.ForecastPeriod) []string {
-	seen := map[string]struct{}{}
-	var out []string
-	for _, period := range periods {
-		if period.TextDescription == "" {
-			continue
-		}
-		if _, ok := seen[period.TextDescription]; ok {
-			continue
-		}
-		seen[period.TextDescription] = struct{}{}
-		out = append(out, period.TextDescription)
-	}
-	return out
-}
-
 func mostLikelyPrecipitationHour(maxPop *forecast.TimedValue, timezone string) string {
 	if maxPop == nil || maxPop.Value <= 0 {
 		return ""