Nomad changes

fixtures/plugin_api/ocr_backends_unregister.json

@@ -0,0 +1,20 @@
+{
+  "id": "ocr_backends_unregister",
+  "category": "ocr_backend_management",
+  "description": "Unregister nonexistent OCR backend gracefully",
+  "tags": [
+    "ocr",
+    "plugin_management",
+    "unregister",
+    "trait-bridge"
+  ],
+  "call": "unregister_ocr_backend",
+  "input": {
+    "name": "nonexistent-backend-xyz"
+  },
+  "assertions": [
+    {
+      "type": "not_error"
+    }
+  ]
+}