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>

tst/Makefile

@@ -0,0 +1,12 @@
+# Klammertext distribution test suite (subset).
+#
+# Runs the two shell regression suites:
+#   cond_test.sh    — @cond argument delimitation
+#   deftype_test.sh — the four klammer definition modes + redefinition table
+#
+# Requires KLAMMERTEXT_HOME set and `ktext` on PATH (build it with `make -C com`).
+
+.PHONY: test
+test:
+	./cond_test.sh
+	./deftype_test.sh