Remove stale ad-hoc JSON analysis files

party_svd_scores.json was missing NSC and axis_analysis_data.json was
unused by the app. Both were one-off analysis artifacts.

thoughts/ledgers/audit_events.json

@@ -638,5 +638,36 @@
     "target_id": null,
     "metadata": {},
     "created_at": "2026-03-24T19:28:45.097703Z"
+  },
+  {
+    "id": "8efe6c13-e152-48f9-be1b-b5ca3542b316",
+    "actor_id": null,
+    "action": "embedding_failed",
+    "target_type": "motion",
+    "target_id": "99",
+    "metadata": {
+      "error": "RuntimeError(\"Simulated embedding failure for index 0: 'failing motion'\")"
+    },
+    "created_at": "2026-03-29T21:09:02.760202Z"
+  },
+  {
+    "id": "221e4c30-9d29-457e-82ee-77865aa8f916",
+    "actor_id": null,
+    "action": "test_action",
+    "target_type": "unit",
+    "target_id": "u1",
+    "metadata": {
+      "k": 1
+    },
+    "created_at": "2026-03-29T21:09:05.540431Z"
+  },
+  {
+    "id": "f8ebd6fc-c92b-4d57-9ef4-a2f3e8d54943",
+    "actor_id": null,
+    "action": "another_action",
+    "target_type": "motion",
+    "target_id": null,
+    "metadata": {},
+    "created_at": "2026-03-29T21:09:05.589179Z"
   }
 ]