Add Today planning module scaffold

internal/briefing/modules_test.go

@@ -112,6 +112,43 @@ func TestModuleRegistryRejectsIncompatibleReports(t *testing.T) {
 	}
 }
 
+func TestModuleRegistryValidatesTodayPlanningSupport(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	if err := registry.ValidateComposition(report.Today, []module.ConfigItem{{ID: module.TodayPlanning}}); err != nil {
+		t.Fatalf("ValidateComposition(today) error = %v", err)
+	}
+	for _, id := range []report.ID{report.Tomorrow, report.DailyToday} {
+		t.Run(string(id), func(t *testing.T) {
+			err := registry.ValidateComposition(id, []module.ConfigItem{{ID: module.TodayPlanning}})
+			if err == nil || !strings.Contains(err.Error(), `module "today_planning" is not compatible with report`) {
+				t.Fatalf("ValidateComposition(%s) error = %v, want incompatible report", id, err)
+			}
+		})
+	}
+}
+
+func TestModuleRegistrySupportsTodayEligibleModules(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	err := registry.ValidateComposition(report.Today, []module.ConfigItem{
+		{ID: module.Metadata},
+		{ID: module.CurrentConditions},
+		{ID: module.NarrativeForecast},
+		{ID: module.HourlyForecast},
+		{ID: module.DerivedDailySummary},
+		{ID: module.DerivedDaypartSummaries},
+		{ID: module.PrecipTiming},
+		{ID: module.AlertDigest},
+		{ID: module.SPCConvectiveOutlooks},
+		{ID: module.AreaForecastDiscussion},
+		{ID: module.SPCConvectiveDiscussion},
+		{ID: module.WeatherStory},
+		{ID: module.OutdoorWindows},
+	})
+	if err != nil {
+		t.Fatalf("ValidateComposition(today eligible modules) error = %v", err)
+	}
+}
+
 func TestModuleRegistryRejectsHourlyIncompatibleModules(t *testing.T) {
 	registry := MustDefaultModuleRegistry()
 	for _, id := range []module.ID{
@@ -119,6 +156,7 @@ func TestModuleRegistryRejectsHourlyIncompatibleModules(t *testing.T) {
 		module.DerivedDailySummary,
 		module.DerivedDaypartSummaries,
 		module.OutdoorWindows,
+		module.TodayPlanning,
 		module.TomorrowPlanning,
 	} {
 		t.Run(string(id), func(t *testing.T) {