Implemented NWS weather stories support

internal/sinks/postgres/map_test.go

@@ -193,6 +193,76 @@ func TestMapPostgresEventForecastDiscussionStructPayload(t *testing.T) {
 	assertAllWritesIncludeAllColumns(t, writes)
 }
 
+func TestMapPostgresEventWeatherStoryStructPayload(t *testing.T) {
+	run := model.WeatherStoryRun{
+		OfficeID: "LSX",
+		AsOf:     time.Date(2026, 5, 30, 9, 0, 34, 0, time.UTC),
+		Stories: []model.WeatherStory{
+			{
+				OfficeID:    "LSX",
+				StartTime:   time.Date(2026, 5, 30, 8, 46, 0, 0, time.UTC),
+				EndTime:     time.Date(2026, 5, 31, 11, 0, 0, 0, time.UTC),
+				UpdatedAt:   time.Date(2026, 5, 30, 9, 0, 34, 0, time.UTC),
+				Title:       "Several Chances for Rain Through Monday",
+				Description: "Scattered showers and thunderstorms.",
+				AltText:     "This slide shows the forecast.",
+				Priority:    true,
+				Order:       1,
+				DownloadURL: "https://api.weather.gov/offices/LSX/weatherstories/download/story-1",
+			},
+		},
+	}
+
+	writes, err := mapPostgresEvent(context.Background(), testEvent(standards.SchemaWeatherStoryV1, "weather_story", run))
+	if err != nil {
+		t.Fatalf("mapPostgresEvent() error = %v", err)
+	}
+	if len(writes) != 2 {
+		t.Fatalf("mapPostgresEvent() writes len = %d, want 2", len(writes))
+	}
+	if writes[0].Table != tableWeatherStoryRuns {
+		t.Fatalf("writes[0].Table = %q, want %q", writes[0].Table, tableWeatherStoryRuns)
+	}
+	if got := writes[0].Values["story_count"]; got != 1 {
+		t.Fatalf("weather_story_runs story_count = %#v, want 1", got)
+	}
+	if writes[1].Table != tableWeatherStories {
+		t.Fatalf("writes[1].Table = %q, want %q", writes[1].Table, tableWeatherStories)
+	}
+	if got := writes[1].Values["download_url"]; got != "https://api.weather.gov/offices/LSX/weatherstories/download/story-1" {
+		t.Fatalf("weather_stories download_url = %#v", got)
+	}
+	if got := writes[1].Values["story_order"]; got != 1 {
+		t.Fatalf("weather_stories story_order = %#v, want 1", got)
+	}
+
+	assertAllWritesIncludeAllColumns(t, writes)
+}
+
+func TestMapPostgresEventWeatherStoryRejectsMissingAsOf(t *testing.T) {
+	_, err := mapPostgresEvent(context.Background(), testEvent(standards.SchemaWeatherStoryV1, "weather_story", model.WeatherStoryRun{}))
+	if err == nil {
+		t.Fatalf("mapPostgresEvent() error = nil, want missing asOf error")
+	}
+	if !strings.Contains(err.Error(), "asOf is required") {
+		t.Fatalf("error = %q, want asOf context", err)
+	}
+}
+
+func TestMapPostgresEventWeatherStoryRejectsMissingStoryTimes(t *testing.T) {
+	run := model.WeatherStoryRun{
+		AsOf:    time.Date(2026, 5, 30, 9, 0, 34, 0, time.UTC),
+		Stories: []model.WeatherStory{{Title: "missing times"}},
+	}
+	_, err := mapPostgresEvent(context.Background(), testEvent(standards.SchemaWeatherStoryV1, "weather_story", run))
+	if err == nil {
+		t.Fatalf("mapPostgresEvent() error = nil, want missing story times error")
+	}
+	if !strings.Contains(err.Error(), "stories[0] startTime/endTime/updatedAt are required") {
+		t.Fatalf("error = %q, want story time context", err)
+	}
+}
+
 func TestMapPostgresEventMapPayload(t *testing.T) {
 	run := model.WeatherForecastRun{
 		IssuedAt: time.Date(2026, 3, 16, 18, 0, 0, 0, time.UTC),