Summary
- merged
- clarified signature: prefer authentic cterm used in Simplifier, avoid potential re-certification in user-code;
- clarified names (see also 9c00a46d69d0, c5cd7a58cf2d); NB: Simplifier.set_trace_ops overrides Pure setup for Simplifier_Trace panel, but that is hardly every used in practice;
- provide scala-3.4.1, but do not activate it: scala-3.3.x is LTS version;
- clarified "bulky" sessions (again, see also 06153e2e0cdb), but note that "very_slow" is normally used together with "slow";
- moved over material from AFP; most importantly on algebraic numbers and algebraically closed fields
- update NEWS;
- moved web_app module from AFP (e.g., for building web services for the distributed build);
- added special syntax for FSet.Ball and FSet.Bex
- tuned proof
- tuned proofs of Equiv_Relations.equiv