diff --git a/runs/2026-09-28_alc-v1-mask1/run.json b/runs/2026-09-28_alc-v1-mask1/run.json
new file mode 100644
index 0000000..bc10336
--- /dev/null
+++ b/runs/2026-09-28_alc-v1-mask1/run.json
@@ -0,0 +1,19 @@
+{
+  "id": "2026-09-28_alc-v1-mask1",
+  "dataset": "dataset/2026-09-28_alc-v1",
+  "base_weights": "/home/jungfrau/AareLC/models/yolo26n-seg.pt",
+  "status": "exported",
+  "created": "2026-09-28T21:30:31",
+  "created_by": "jungfrau@mx-spark-01",
+  "hyperparams": {},
+  "version": null,
+  "metrics": {},
+  "history": [
+    {
+      "status": "exported",
+      "at": "2026-09-28T21:30:31",
+      "by": "jungfrau@mx-spark-01",
+      "note": "full-resolution masks (mask_ratio=1); same dataset and gold as 2026-09-28_alc-v1"
+    }
+  ]
+}