internal/rosa: create metadata alongside artifact

This enables deferring evaluation of azalea-based packages and fixes the longstanding quirk of version being disjoint from other metadata.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/rosa_test.go

@@ -78,9 +78,8 @@ func TestCureAll(t *testing.T) {
 	t.Parallel()
 
 	for _, p := range rosa.Native().Collect() {
-		a, _ := rosa.Native().Std().MustLoad(p)
-		meta := rosa.Native().MustGet(p)
-		t.Run(meta.Name, func(t *testing.T) {
+		_, a := rosa.Native().Std().MustLoad(p)
+		t.Run(p.String(), func(t *testing.T) {
 			t.Parallel()
 
 			if pathname, _, err := cache.Cure(a); err != nil {