fix(WP-0017/E5): Layer 3 error fixes — round 3 (24 files)

Int16→Int in score/stars functions; uuid-based readMay→UUID.fromText;
autoRefresh do-notation fix; id→\x->x ambiguity in HubRoutingRules;
MarketplaceDashboard replaced raw SQL with IHP query builder; optional
hub selector in TypeRegistry views via CanSelect (Text, Maybe Id) instance
added to Web.View.Prelude; import consolidations to Web.View.Prelude.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Web/View/Prelude.hs

@@ -23,3 +23,9 @@ instance CanSelect (Text, Id' tag) where
     type SelectValue (Text, Id' tag) = Id' tag
     selectValue (_, v) = v
     selectLabel (l, _) = l
+
+-- | Allow [(Text, Maybe (Id' tag))] option lists (e.g. optional hub selectors).
+instance CanSelect (Text, Maybe (Id' tag)) where
+    type SelectValue (Text, Maybe (Id' tag)) = Maybe (Id' tag)
+    selectValue (_, v) = v
+    selectLabel (l, _) = l