initial: composition-test v0.1.0 — 14 assertions

Phase-A.1 test-lib for lib-core.composition. Covers define_template,
create, list_by_template, list_by_tag, destroy, list_templates.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

manifest.lib

@@ -0,0 +1,9 @@
+{
+    "id": "lib-core.composition-test",
+    "role": "test",
+    "version": "0.1.0",
+    "api_min": "0.1",
+    "deps": [
+        {"id": "lib-core.composition", "version": "0.1.0"}
+    ]
+}