The ansi target, txt table styles, kdesc reference from ref/, typeface and table-width fixes (from dev fcec5e2e77ac)

Since the previous release: Machine::read_string() (the fs::path/std::string
overload pair split); kdesc -c and -u rendered from the ref/ reflection
klammerset; a fit column's tex width measured in TeX over every entry;
@typeface resolving to the family its css declares (a store directory name
now works in html) and hieroglyphs in @unicode_examples set in their
typeface; the ansi target -- plain text with the type styles a terminal can
show, identical to txt once the escape sequences are stripped -- with the
txt @table carrying :header_style, :style and :hline; @block anchoring,
@table spacing and the Image_quality state variable; and the rewritten
doc/klammertext_for_llm.md.

mac/eval.cpp

@@ -336,7 +336,7 @@ katom_list Eval::eval(katom_iter begin, katom_iter end)
     Machine M = m_machine;
     M.m_warn_unparsed = false; // Result text is machine-generated (see machine.h)
     size_t before = M.m_katoms.size();
-    M.read(eval_result);
+    M.read_string(eval_result);
     // If the @eval produced more Klammertext -- the read-back result still
     // holds klammers to reduce (a "generator", e.g. a Python klammer returning
     // a @table call with data) -- then its text is writer content: escape it