fix: WantList's prop is list, not state, which Svelte reads as the $state store; the length test's 4-minute case fits within 3% (M502 #5522)

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

internal/importer/verify_test.go

@@ -166,7 +166,9 @@ func TestLengthFits(t *testing.T) {
 		file, track int
 		ok          bool
 	}{
-		{240000, 244000, true}, {240000, 246000, false}, {600000, 615000, true}, {600000, 620000, false},
+		// Short tracks get the 5s floor; longer ones 3% of the track.
+		{120000, 125000, true}, {120000, 126000, false},
+		{240000, 246000, true}, {240000, 248000, false}, {600000, 615000, true}, {600000, 620000, false},
 		{0, 240000, false}, {240000, 0, true},
 	} {
 		if got := lengthFits(c.file, c.track); got != c.ok {