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.

sks/document/document_html.cpp

@@ -109,12 +109,15 @@ std::string Document_class::font_definitions()
         // var() with such a value computes to inherit, silently losing
         // the font.
         ss << ":root {\n";
+        // The family the store RESOLVED, which is what the localized css
+        // declares -- the name as written may be the store's directory
+        // name ("crimson-pro"), which matches no @font-face.
         if (!m_serif_typeface.empty())
-            ss << "    --serif: \"" << m_serif_typeface << "\", serif;\n";
+            ss << "    --serif: \"" << m_resolved_serif.family_name << "\", serif;\n";
         if (!m_sans_typeface.empty())
-            ss << "    --sans-serif: \"" << m_sans_typeface << "\", sans-serif;\n";
+            ss << "    --sans-serif: \"" << m_resolved_sans.family_name << "\", sans-serif;\n";
         if (!m_mono_typeface.empty())
-            ss << "    --monospace: \"" << m_mono_typeface << "\", monospace;\n";
+            ss << "    --monospace: \"" << m_resolved_mono.family_name << "\", monospace;\n";
         ss << "}\n";
     }
     // Font-size normalization across families is no longer emitted from
@@ -761,7 +764,7 @@ std::string Document_class::html()
         install_resolved_font(rf, output_directory);
     }
     for (auto& [basename, text] : m_file_components) {
-        text = strip_typeface_markers(text);
+        text = resolve_typeface_families(text);
     }
     auto headings = insert_section_numbers();
     insert_section_numbers("___NUM2___", false);