Fix various problems (artifact order, api empty slice, assignee check, fuzzy prompt, mirror proxy, adopt git) (#33569)

* Make artifact list output a stable order
* Fix #33506
* Fix #33521
* Fix #33288
* Fix #33196
* Fix #33561

modules/util/slice.go

@@ -71,3 +71,10 @@ func KeysOfMap[K comparable, V any](m map[K]V) []K {
 	}
 	return keys
 }
+
+func SliceNilAsEmpty[T any](a []T) []T {
+	if a == nil {
+		return []T{}
+	}
+	return a
+}