Filter dialog: only offer options that yield results

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

internal/ui/releases.go

@@ -73,10 +73,10 @@ func (a *App) openReleases(title string, fetch func(context.Context) ([]arr.Rele
 			v.sortMode = (v.sortMode + 1) % numSortModes
 			v.render()
 		case ev.Key() == tcell.KeyRune && ev.Rune() == 'F':
-			v.app.openAttrFilter(v.attr, releaseLanguages(v.all), func(f attrFilter) {
+			v.app.openAttrFilter(v.attr, v.filterPool, func(f attrFilter) {
 				v.attr = f
 				v.render()
-			})
+			}, nil)
 		case ev.Key() == tcell.KeyRune && ev.Rune() == 'f':
 			v.hideRejected = !v.hideRejected
 			v.render()
@@ -349,18 +349,15 @@ func formatReleaseAge(minutes float64) string {
 	return fmt.Sprintf("%dd", int(minutes/(24*60)))
 }
 
-// releaseLanguages lists the languages the releases announce, sorted.
-func releaseLanguages(all []arr.Release) []string {
-	seen := map[string]bool{}
-	var out []string
-	for _, r := range all {
-		for _, l := range r.Attrs().Languages {
-			if !seen[l] {
-				seen[l] = true
-				out = append(out, l)
-			}
+// filterPool lists the properties of the releases that pass the rejected
+// filter, for the filter dialog.
+func (v *releasesView) filterPool() filterPool {
+	var p filterPool
+	for _, r := range v.all {
+		if v.hideRejected && isRejected(r) {
+			continue
 		}
+		p.files = append(p.files, []arr.FileAttrs{r.Attrs()})
 	}
-	slices.Sort(out)
-	return out
+	return p
 }