Add a /conditions/current endpoint

internal/adapters/outbound/postgres/repository_test.go

@@ -110,3 +110,54 @@ func TestAttachAlertReferencesPreservesOrder(t *testing.T) {
 		t.Fatalf("unexpected second alert references: %+v", out[1].References)
 	}
 }
+
+func TestMapCurrentConditionsRowNoSamplesReturnsNil(t *testing.T) {
+	got := mapCurrentConditionsRow(currentConditionsRow{
+		SampleCount: 0,
+	})
+	if got != nil {
+		t.Fatalf("expected nil for empty sample window, got %+v", got)
+	}
+}
+
+func TestMapCurrentConditionsRowMapsFields(t *testing.T) {
+	isDay := true
+	got := mapCurrentConditionsRow(currentConditionsRow{
+		SampleCount:             12,
+		TemperatureC:            sql.NullFloat64{Float64: 15.5, Valid: true},
+		ApparentTemperatureC:    sql.NullFloat64{Float64: 14.2, Valid: true},
+		DewpointC:               sql.NullFloat64{Float64: 10.1, Valid: true},
+		RelativeHumidityPercent: sql.NullFloat64{Float64: 72, Valid: true},
+		WindSpeedKmh:            sql.NullFloat64{Float64: 24.8, Valid: true},
+		WindDirectionDegrees:    sql.NullFloat64{Float64: 182.5, Valid: true},
+		ConditionCode:           sql.NullInt64{Int64: 65, Valid: true},
+		IsDay:                   sql.NullBool{Bool: isDay, Valid: true},
+	})
+	if got == nil {
+		t.Fatalf("expected mapped current conditions")
+	}
+	if got.TemperatureC == nil || *got.TemperatureC != 15.5 {
+		t.Fatalf("expected temperature pointer 15.5, got %v", got.TemperatureC)
+	}
+	if got.ApparentTemperatureC == nil || *got.ApparentTemperatureC != 14.2 {
+		t.Fatalf("expected apparent temp pointer 14.2, got %v", got.ApparentTemperatureC)
+	}
+	if got.DewpointC == nil || *got.DewpointC != 10.1 {
+		t.Fatalf("expected dewpoint pointer 10.1, got %v", got.DewpointC)
+	}
+	if got.RelativeHumidityPercent == nil || *got.RelativeHumidityPercent != 72 {
+		t.Fatalf("expected rh pointer 72, got %v", got.RelativeHumidityPercent)
+	}
+	if got.WindSpeedKmh == nil || *got.WindSpeedKmh != 24.8 {
+		t.Fatalf("expected wind speed pointer 24.8, got %v", got.WindSpeedKmh)
+	}
+	if got.WindDirectionDegrees == nil || *got.WindDirectionDegrees != 182.5 {
+		t.Fatalf("expected wind direction pointer 182.5, got %v", got.WindDirectionDegrees)
+	}
+	if got.ConditionCode != 65 {
+		t.Fatalf("expected condition code 65, got %d", got.ConditionCode)
+	}
+	if got.IsDay == nil || !*got.IsDay {
+		t.Fatalf("expected isDay pointer true, got %v", got.IsDay)
+	}
+}