Initial commit: Klammertext source distribution

Curated source subset assembled by klammertext-dev's doc/make_dist.sh: the Klammermachine (mac), the Standard Klammer Set (sks), the commands (com), editor plugins and install guides (doc), a test subset (tst), and lib/bin placeholders. Builds with 'make -C com'.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

sks/sks.k

@@ -0,0 +1,15 @@
+# Standard Klammer Set
+@read kutil/kutil.k @
+@read target/target.k @
+@read font/font.k @
+@read section/section.k @
+@read image/image.k @
+@read code/code.k @
+@read list/list.k @
+@read link/link.k @
+@read table/table.k @
+@read date/date.k @
+@read block/block.k @
+@read color/color.k @
+@read document/document.k @
+@read book/book.k @