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>

mac/env/optimize.env

@@ -0,0 +1,16 @@
+
+ifdef OPTIMIZE
+# Performance build: make OPTIMIZE=1
+# `override` so a command-line `make OPTIMIZE=1` is remapped to -O3 too;
+# without it, a command-line assignment wins over this `:=` and the literal
+# `1` leaks into CXXFLAGS (g++ then treats `1` as an input file).
+override OPTIMIZE := -O3
+SANITIZE :=
+else ifdef NOPYTHON
+OPTIMIZE := -O0 -g -DNOPYTHON
+SANITIZE :=
+else
+# Debug build (default): includes AddressSanitizer
+OPTIMIZE := -O0 -g
+SANITIZE := -fsanitize=address -fno-omit-frame-pointer
+endif