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/block/block.py

@@ -70,12 +70,20 @@ class Block(klammer_base.Klammer_base):
         # NOT latex_util.block(): a textblock is absolutely positioned and
         # does not participate in the normal flow, so breaking the paragraph
         # around it would move the surrounding text.
+        #
+        # The trailing \par\kern0pt gives the block's vbox zero depth.
+        # textpos anchors :point against the box HEIGHT alone, so content
+        # whose last line has depth -- an @image, whose [c] minipage sits
+        # half below the baseline -- was anchored a quarter of its height
+        # too low (2in for a page-high picture) until 2026-09-08.
         to_x, to_y = [float(e) for e in self.to.split()]
         pt_x, pt_y  = [float(e) for e in self.point.split()]
         result = f"""
 \\begin{{textblock}}{{{self.width}}}[{pt_x},{pt_y}]({to_x},{to_y})
+\\setlength{{\\textwidth}}{{\\linewidth}}
 \\vspace*{{-1\\parskip}}
 {self.content.strip()}
+\\par\\kern0pt
 \\end{{textblock}}
 """
         return result