proper Java/Scala compiler classpath for standalone application (see also make_isabelle_app() in Pure/Admin/build_release.scala);

clarified message;

provide naproche-20220808 (inactive);

more robust data representation: notably for Store.read_session_timing with database_server;

tuned message;

afford default cache policy, despite 6a29709906c6;

tuned signature;

clarified signature: more uniform treatment of cache for Export.read_session vs. Export.read_theory;

tuned;

tuned signature;