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/document/document.k

@@ -62,21 +62,10 @@
 : Top-level document structure 
 @@
 
-@@document.html,tex :: @eval :cpp *KLAMMERTEXT_HOME*/sks/document/document document @ @@
-
-# The following definition of @document.txt is not adequate (it ignores :files,
-# for example), but it enables tests of other txt klammers for now.  When one of
-# the arguments is empty, the justifcation postprocess should remove multiple
-# lines, but __VSPACE__ inserts a space character, which prevents the lines
-# removal from the justification function.  You can also see the extra space
-# before the *subtitle* value.
+@@document.html,tex ::
+  @eval :cpp *KLAMMERTEXT_HOME*/sks/document/document document @
+@@
 
 @@document.txt ::
-@eval "*title*".upper() @ @nl@
-*subtitle*
-
-*author* @nl@
-*date*
-
-*text*
+  @eval document_txt.Document(K) @
 @@