Update ConfigKit and prepare Narratio v2.1.2

docs/config.md

@@ -240,8 +240,10 @@ inputs:
   and a missing or empty explicit selection is an error.
 - Each immediate regular file whose name is a valid environment-variable name
   supplies one value. ConfigKit removes trailing CR/LF, permits a symlink as the
-  selected directory, rejects symlink entries, and limits input to 1 MiB per
-  file, 8 MiB total, and 1024 entries.
+  selected directory, rejects non-hidden symlink entries, and limits input to
+  1 MiB per file, 8 MiB total, and 1024 entries. Dot-prefixed entries (including
+  files, directories, and symlinks) are ignored and omitted from bootstrap
+  reports, but still count toward the directory entry limit.
 - An existing process environment value takes precedence over a credential file.
 - On POSIX, operators must provision the directory with no group/other access
   (normally `0700`) and files with no group/other access (normally `0600`);