Vyasa Extension Refactor Audit and Execution Plan

Required TestsURL copied

Cross-Seam TestsURL copied

  • test_markdown_renderer_does_not_import_render_extensions
  • test_search_does_not_import_bookmarks
  • test_tree_rendering_does_not_import_bookmarks
  • test_layout_does_not_import_annotations_or_slides
  • test_core_does_not_import_builtin_feature_extensions_except_registry

These can use source scanning with path.read_text() and forbidden import strings.