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>

lib/.gitignore

@@ -0,0 +1,3 @@
+*
+!.gitignore
+!README.md

lib/README.md

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+# lib
+
+This directory holds the compiled Klammermachine shared library
+(`libklammertext.so`) after you build Klammertext with `make -C com`.
+It is empty in the repository.