Add the calendar view (M10)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/sonarr/sonarr_test.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"time"
 )
 
 const lookupJSON = `[
@@ -179,3 +180,21 @@ func TestDeleteSeries(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func TestCalendar(t *testing.T) {
+	c := newTestClient(t, func(w http.ResponseWriter, r *http.Request) {
+		q := r.URL.Query()
+		if r.URL.Path != "/api/v3/calendar" || q.Get("includeSeries") != "true" || q.Get("unmonitored") != "false" || q.Get("start") != "2026-10-20" {
+			t.Errorf("unexpected request %s", r.URL)
+		}
+		w.Write([]byte(`[{"id":9,"seriesId":2,"seasonNumber":2,"episodeNumber":5,"title":"Welcome","airDate":"2026-10-21","airDateUtc":"2026-10-22T01:00:00Z","overview":"Pilot.","monitored":true,"series":{"id":2,"title":"Andor","images":[{"coverType":"poster","url":"/p.jpg"}]}}]`))
+	})
+	start := time.Date(2026, 10, 20, 0, 0, 0, 0, time.UTC)
+	eps, err := c.Calendar(context.Background(), start, start.AddDate(0, 0, 13), false)
+	if err != nil || len(eps) != 1 {
+		t.Fatalf("eps=%v err=%v", eps, err)
+	}
+	if e := eps[0]; e.Series == nil || e.Series.Title != "Andor" || e.AirDateUTC != "2026-10-22T01:00:00Z" || e.Overview != "Pilot." || len(e.Series.Images) != 1 {
+		t.Errorf("episode not decoded: %+v", e)
+	}
+}