kdesc --coverage <target>: one target's view (from dev 931ea5490a5d)

For the designer building a target: the klammers that cover it, those
that do so with an empty definition (a decision that the klammer has no
meaning there), and the undecided ones (no definition). One klammer per
line, alphabetical; "all" adds the explanations; an unknown word names
the missing target.

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

README.md

@@ -53,7 +53,7 @@ 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 `c59774b8252d`.
+This snapshot was assembled from development commit `931ea5490a5d`.
 
 ## License