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/font_store.cpp

@@ -89,6 +89,15 @@ static void classify_from_css(Resolved_font& font, std::string css_path)
 {
     // Parse the @font-face blocks in the CSS to determine variant → filename mapping
     std::string css = string_from_file(css_path);
+    // The family name is what the css DECLARES, not what the caller wrote:
+    // a typeface may be asked for by its directory name
+    // ("noto-sans-egyptian-hieroglyphs"), and a font-family value in
+    // generated html must match the @font-face or the browser substitutes
+    // silently (until 2026-09-12 the request was echoed back).
+    static const std::regex family_rgx(R"(font-family:\s*'([^']+)')");
+    std::smatch match;
+    if (std::regex_search(css, match, family_rgx))
+        font.family_name = match[1];
     std::regex face_rgx(
         R"(@font-face\s*\{[^}]*font-style:\s*(\w+);[^}]*font-weight:\s*(\w+);[^}]*url\('([^']+\.ttf)'\)[^}]*\})",
         std::regex::multiline);