Pure-virtual declarations (`virtual int read(int key) = 0;`) parse as field_declaration, not function_definition, so they minted no method node — calls through an abstract base and cpp-override synthesis had nothing to attach to. Mirror Java interface methods: mint the node (TS + kernel), mark isAbstract, and cover with extraction/e2e/parity fixtures. Co-authored-by: Colby McHenry <colbymchenry@users.noreply.github.com>