Add a new narrative forecast module and remove the unimplemented daily forecast stub

internal/adapters/weatherapi/client.go

@@ -112,9 +112,6 @@ func (c *Client) FetchBundle(ctx context.Context) (*weatherdata.Bundle, error) {
 	if err := builder.fetchWeatherStory(ctx); err != nil {
 		return nil, err
 	}
-	if err := builder.addStub("daily", "daily forecast data is not available from the weather API yet"); err != nil {
-		return nil, err
-	}
 
 	return builder.bundle, nil
 }
@@ -267,15 +264,6 @@ func (b *bundleBuilder) fetchWeatherStory(ctx context.Context) error {
 	return nil
 }
 
-func (b *bundleBuilder) addStub(sourceName string, message string) error {
-	source := weatherdata.Source{
-		Name:      sourceName,
-		FetchedAt: b.fetchedAt,
-		Missing:   true,
-	}
-	return b.applyMissingPolicy(&source, "missing_source", message)
-}
-
 func (b *bundleBuilder) handleMissing(source *weatherdata.Source, message string, required bool) error {
 	source.Missing = true
 	if required {