kdesc --typeface from the reflection klammerset; a missing font directory is a row, not an error

Assembled from klammertext-dev daad6273483a. The font-store listing is
rendered from ref/ (one table per search directory, in search order,
with the styles each typeface holds); the search path is described,
not validated, so a KLAMMERTEXT_FONTS directory that does not exist --
the default ~/.klammertext/fonts on a fresh install -- is a row saying
so and the command exits 0. A typeface an earlier directory also holds
is marked shadowed, with the winning directory, in a column present only
when needed. The store's layout convention has one reader,
fonts_in_directory(). Six kdesc suite cases pin the listing.

README.md

@@ -51,7 +51,7 @@ are regenerated on each release — patches cannot be merged directly.
 Report problems (or send patches) to the author; accepted changes are
 applied to the development tree and appear in a following snapshot.
 
-This snapshot was assembled from development commit `e99530408517`.
+This snapshot was assembled from development commit `daad6273483a`.
 
 ## License