v1.35.3

Fixed

• Abstract classes were not chunked at all (abstract_class_declaration was missing
  from the chunker's declaration map), so abstract class declarations were absent from
  AST-read skeletons and genome RAG chunking. Now mapped to the class kind — abstract
  classes get the same member-signature treatment (and a regression test covers the harder
  shapes: abstract methods, getters/setters, generic/async methods, static + readonly
  fields, private # methods).