Add poster image support to Matrix download listings

- Fetch and display poster images for tracked items in Matrix
- Show monitored/unmonitored icons in listings
- Limit displayed items to 12, with count and overflow message
- Add tests for image fetching and formatting
- Enable Grafana datasources
- Fix Sonarr/Radarr URL config bug

packages/arrtrix/pkg/matrixcmd/download_test.go

@@ -0,0 +1,44 @@
+package matrixcmd
+
+import (
+	"testing"
+
+	"sneeuwvlok/packages/arrtrix/pkg/arrclient"
+)
+
+func TestFormatDownloadListFallbackCardUsesMonitoredIcon(t *testing.T) {
+	item := arrclient.ManagedItem{
+		ID:        1,
+		Title:     "Severance",
+		Year:      2022,
+		Monitored: true,
+	}
+
+	fallback := formatDownloadListFallbackCard(item)
+	if fallback != "👁 Severance (2022)" {
+		t.Fatalf("unexpected monitored fallback %q", fallback)
+	}
+}
+
+func TestFormatDownloadListFallbackCardUsesUnmonitoredIcon(t *testing.T) {
+	item := arrclient.ManagedItem{
+		ID:        7,
+		Title:     "Andor",
+		Year:      2022,
+		Monitored: false,
+	}
+
+	fallback := formatDownloadListFallbackCard(item)
+	if fallback != "🚫 Andor (2022)" {
+		t.Fatalf("unexpected unmonitored fallback %q", fallback)
+	}
+}
+
+func TestMonitoredIcon(t *testing.T) {
+	if monitoredIcon(true) != "👁" {
+		t.Fatalf("expected monitored icon, got %q", monitoredIcon(true))
+	}
+	if monitoredIcon(false) != "🚫" {
+		t.Fatalf("expected unmonitored icon, got %q", monitoredIcon(false))
+	}
+}