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>

doc/edit/sublime/Default.sublime-keymap

@@ -0,0 +1,20 @@
+// Klammertext key bindings.
+//
+// Binds "jump to matching klammer delimiter" (the companion Klammertext.py
+// command) to Ctrl+M — Sublime's own "go to matching bracket" key, repurposed
+// for klammers, since the built-in cannot match context-dependent @ pairs.
+//
+// The "selector" context confines the binding to Klammertext files, so Ctrl+M
+// keeps its normal meaning everywhere else.
+//
+// macOS users may prefer "super+m"; change the "keys" value below.  This file
+// (no platform suffix) is loaded on all platforms.
+[
+	{
+		"keys": ["ctrl+m"],
+		"command": "klammertext_jump_to_match",
+		"context": [
+			{ "key": "selector", "operator": "equal", "operand": "text.klammertext" }
+		]
+	}
+]