Added new endpoints under /forecast/narrative

internal/adapters/outbound/postgres/forecast_queries.go

@@ -1,4 +1,4 @@
-// forecast_queries.go contains SQL text for hourly forecast reads.
+// forecast_queries.go contains SQL text for forecast reads.
 // Layer: adapters/outbound/postgres forecast feature.
 package postgres
 
@@ -17,6 +17,22 @@ SELECT
 FROM forecasts
 WHERE product = 'hourly'
 ORDER BY issued_at DESC, event_emitted_at DESC
+LIMIT 1`
+
+	queryLatestNarrativeForecast = `
+SELECT
+  event_id,
+  location_id,
+  location_name,
+  issued_at,
+  updated_at,
+  product,
+  latitude,
+  longitude,
+  elevation_meters
+FROM forecasts
+WHERE product = 'narrative'
+ORDER BY issued_at DESC, event_emitted_at DESC
 LIMIT 1`
 
 	queryForecastPeriods = `