Clean release snapshot

tests/fixtures/plugin_capabilities/valid_requester_observer.json

@@ -0,0 +1,17 @@
+{
+  "id": "nam_tone",
+  "name": "NAM Tone",
+  "standards": ["capability-pipelines.v1", "plugin-runtime-idempotent.v1"],
+  "capabilities": {
+    "stems": {
+      "roles": ["requester", "observer"],
+      "commands": ["mute", "restore", "inspect"],
+      "events": ["claim:created", "claim:released", "stems.manual-unmute"],
+      "mode": "active",
+      "compatibility": "legacy-window-shim",
+      "ownership": "requester-only",
+      "safety": "safe",
+      "version": 1
+    }
+  }
+}