txt section numbering, @typeface :middle/:lift and html scale, NewGardinerOmni, html :leading (from dev 9fa469dd74ed)

Section headings under txt are numbered inside a @document only; @typeface
gains :middle and :lift and its :scale now means the same in html and
pdf; NewGardinerOmni ships (OFL 1.1, Mark-Jan Nederhof) and @egyptian /
@chinese replace @cjk; @table :leading and :colsep reach html; kdesc
--typeface help names the flag; @document.txt is a Python class.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

sks/table/table.py

@@ -575,6 +575,24 @@ class Table(klammer_base.Klammer_base):
         # would wrap it as a stray <p> inside the table.
         return E("colgroup").body(cols.strip(), newline=False).str(), layout, table_width
 
+    def html_style(self):
+        # :leading and :colsep under html (2026-09-18; both were tex-only).
+        # \arraystretch multiplies the row strut, which is \baselineskip,
+        # 1.2 times the font size -- so :leading L is a 1.2 L em row, and
+        # the html equivalent is that line-height on the table, inherited
+        # by every cell.  The cells' vertical padding went with it
+        # (table.css): an html-only extra with no tex counterpart, which
+        # kept a :leading 1 table 0.3rem looser per row than its pdf.
+        # :colsep is a custom property the td rule reads for its horizontal
+        # padding (padding does not inherit); the flush-edge classes still
+        # zero the outer ones.  Measured 2026-09-18: rows of :leading 1 and
+        # :leading 2 in the ratio 1:2 in both targets.
+        line_height = f"{1.2 * float(self.leading):.4g}"
+        # Hidden: the result is re-read and the html target's transforms
+        # would turn the property's "--" into an en dash (font.py's trap).
+        return klammer_base.hide_typographic(
+            f"line-height: {line_height}; --colsep: {self.colsep}")
+
     def html(self):
         result = ""
         for row_i, row in enumerate(self.cells):
@@ -592,7 +610,7 @@ class Table(klammer_base.Klammer_base):
             # algorithm), matching the tex \ratio division.  The max-width
             # cap goes on the caption wrapper when there is one (the table's
             # own percentage would be circular in a shrink-to-fit wrapper).
-            result = E("table").body(result)
+            result = E("table").body(result).attr("style", self.html_style())
             if self.number or self.caption:
                 result = html_util.add_caption(
                     result, "Table", self.number, self.caption,
@@ -605,7 +623,7 @@ class Table(klammer_base.Klammer_base):
                 result = html_util.hpos_container(result, self.hpos, self.offset).str()
             return result
         colgroup, layout, table_width = self.html_colgroup()
-        result = E("table").body(colgroup + result)
+        result = E("table").body(colgroup + result).attr("style", self.html_style())
         if self.number or self.caption:
             # The caption wrapper carries the width (a percentage on the
             # shrink-to-fit wrapper itself would be circular) and the table