feat(09-04): compile ordered Winter list schemas

- Typed columns, actions, default sort, search term, and page sizes
- Omitted sortable defaults to true and empty collections marshal as arrays
- Unknown keys, bad defaults, and path escape fail before routes are served

cabana/http.go

@@ -136,16 +136,11 @@ func constrainController(g pact.Router) {
 
 func (s *service) listSchema(w http.ResponseWriter, r *http.Request) {
 	s.protect(w, r, func(cc *CompiledController) {
-		cols := cc.List.Columns
-		if cols == nil {
-			cols = []ListColumn{}
+		schema := cc.List
+		if schema == nil {
+			schema = &ListSchema{}
 		}
-		WriteData(w, http.StatusOK, &ListSchema{
-			Title:          cc.List.Title,
-			RecordsPerPage: cc.List.RecordsPerPage,
-			ShowSearch:     cc.List.ShowSearch,
-			Columns:        cols,
-		}, map[string]any{})
+		WriteData(w, http.StatusOK, schema, map[string]any{})
 	})
 }