diff --git a/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/gold_report.json b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/gold_report.json
new file mode 100644
index 00000000..8ff8e76e
--- /dev/null
+++ b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/gold_report.json
@@ -0,0 +1,108 @@
+{
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+      "n_matched": 79
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+    "f1": 0.7912584777694047,
+    "mean_mask_iou": 0.8743077743877599,
+    "n_matched": 525
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+  "dataset": {
+    "gold_images": 288,
+    "pred_images": 288,
+    "missing_predictions": 0,
+    "iou_threshold": 0.5,
+    "ignored_objects": 242
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+  "environment": {
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+    "ultralytics": "8.4.160",
+    "torch": "2.14.0+cu130"
+  },
+  "gate": {
+    "baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json",
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+    "mask_iou_delta": -0.0071,
+    "mask_score": 0.6841,
+    "mask_score_baseline": 0.6912,
+    "matched_only_iou_delta": -0.0024,
+    "class_f1_delta": {
+      "loop_all": 0.0103,
+      "pin": -0.0124
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+    "pass_point_rule": false,
+    "rule": "paired bootstrap",
+    "bootstrap": {
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+        "lo": -0.0228,
+        "hi": 0.0075,
+        "win": 0.172
+      }
+    },
+    "pass": false
+  }
+}
diff --git a/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/metadata.json b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/metadata.json
new file mode 100644
index 00000000..9f680a26
--- /dev/null
+++ b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/metadata.json
@@ -0,0 +1,71 @@
+{
+  "model_id": "yolo26s-seg-v6-s-noflip-mask1-2026-10-31",
+  "family": "yolo26s",
+  "task": "segmentation",
+  "training_date": "2026-10-31",
+  "run": "2026-10-31_v6-s-noflip-mask1",
+  "dataset": "dataset/2026-10-30_v6",
+  "base_weights": "models/base/yolo26s-seg.pt",
+  "hyperparams": {
+    "epochs": 400,
+    "patience": 50,
+    "imgsz": 640,
+    "batch": 16,
+    "device": "0",
+    "overlap_mask": false,
+    "scale": 0.7,
+    "translate": 0.15,
+    "mosaic": 0.5,
+    "close_mosaic": 10,
+    "fliplr": 0,
+    "flipud": 0.3,
+    "shear": 5.0,
+    "perspective": 0.0,
+    "mask_ratio": 1
+  },
+  "export_formats": [
+    "pt"
+  ],
+  "metrics": {
+    "tp": 525,
+    "fp": 131,
+    "fn": 146,
+    "precision": 0.8003048780487805,
+    "recall": 0.7824143070044709,
+    "f1": 0.7912584777694047,
+    "mean_mask_iou": 0.8743077743877599,
+    "n_matched": 525
+  },
+  "gate": {
+    "baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json",
+    "f1_delta": -0.0018,
+    "mask_iou_delta": -0.0071,
+    "mask_score": 0.6841,
+    "mask_score_baseline": 0.6912,
+    "matched_only_iou_delta": -0.0024,
+    "class_f1_delta": {
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+      "pin": -0.0124
+    },
+    "pass_point_rule": false,
+    "rule": "paired bootstrap",
+    "bootstrap": {
+      "frames": 288,
+      "mounts": 260,
+      "draws": 2000,
+      "f1": {
+        "delta": -0.0018,
+        "lo": -0.0234,
+        "hi": 0.0205,
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+      "mask_score": {
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+        "lo": -0.0228,
+        "hi": 0.0075,
+        "win": 0.172
+      }
+    },
+    "pass": false
+  }
+}
diff --git a/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/weights.pt b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/weights.pt
new file mode 100644
index 00000000..20b5c5d9
--- /dev/null
+++ b/models/registry/yolo26s-seg-v6-s-noflip-mask1-2026-10-31/weights.pt
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c5092b1d0034f88dd4dd57e7ca87b29dc505c3a9fc5e3e3d8557e91bbc910adc
+size 23378525
diff --git a/runs/2026-10-31_v6-s-noflip-mask1/latency.json b/runs/2026-10-31_v6-s-noflip-mask1/latency.json
new file mode 100644
index 00000000..116e38f2
--- /dev/null
+++ b/runs/2026-10-31_v6-s-noflip-mask1/latency.json
@@ -0,0 +1 @@
+{"weights": "runs/2026-10-31_v6-s-noflip-mask1/ultralytics/train/weights/best.pt", "frames": 150, "imgsz": 640, "infer_scale": 0.5, "half": true, "ms_median": 4.88, "ms_p90": 5.02, "ms_max": 8.18, "fps_median": 205.1, "device": "0", "backend": "pytorch", "gpu": "NVIDIA GB10", "ultralytics": "8.4.160", "torch": "2.14.0+cu130"}
diff --git a/runs/2026-10-31_v6-s-noflip-mask1/metrics.json b/runs/2026-10-31_v6-s-noflip-mask1/metrics.json
new file mode 100644
index 00000000..60b518e6
--- /dev/null
+++ b/runs/2026-10-31_v6-s-noflip-mask1/metrics.json
@@ -0,0 +1,57 @@
+{
+  "overall": {
+    "tp": 525,
+    "fp": 131,
+    "fn": 146,
+    "precision": 0.8003048780487805,
+    "recall": 0.7824143070044709,
+    "f1": 0.7912584777694047,
+    "mean_mask_iou": 0.8743077743877599,
+    "n_matched": 525
+  },
+  "gate": {
+    "baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json",
+    "f1_delta": -0.0018,
+    "mask_iou_delta": -0.0071,
+    "mask_score": 0.6841,
+    "mask_score_baseline": 0.6912,
+    "matched_only_iou_delta": -0.0024,
+    "class_f1_delta": {
+      "loop_all": 0.0103,
+      "pin": -0.0124
+    },
+    "pass_point_rule": false,
+    "rule": "paired bootstrap",
+    "bootstrap": {
+      "frames": 288,
+      "mounts": 260,
+      "draws": 2000,
+      "f1": {
+        "delta": -0.0018,
+        "lo": -0.0234,
+        "hi": 0.0205,
+        "win": 0.422
+      },
+      "mask_score": {
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+        "lo": -0.0228,
+        "hi": 0.0075,
+        "win": 0.172
+      }
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+    "pass": false
+  },
+  "training": {
+    "epochs_run": 157,
+    "precision(B)": 0.74827,
+    "recall(B)": 0.73232,
+    "mAP50(B)": 0.7509,
+    "mAP50-95(B)": 0.59359,
+    "precision(M)": 0.72586,
+    "recall(M)": 0.73897,
+    "mAP50(M)": 0.74424,
+    "mAP50-95(M)": 0.57663
+  },
+  "version": "yolo26s-seg-v6-s-noflip-mask1-2026-10-31",
+  "measured_at": "2026-10-31T12:29:06"
+}
diff --git a/runs/2026-10-31_v6-s-noflip-mask1/run.json b/runs/2026-10-31_v6-s-noflip-mask1/run.json
index 01651096..d9cd79d5 100644
--- a/runs/2026-10-31_v6-s-noflip-mask1/run.json
+++ b/runs/2026-10-31_v6-s-noflip-mask1/run.json
@@ -2,18 +2,60 @@
   "id": "2026-10-31_v6-s-noflip-mask1",
   "dataset": "dataset/2026-10-30_v6",
   "base_weights": "models/base/yolo26s-seg.pt",
-  "status": "exported",
+  "status": "gate_failed",
   "created": "2026-10-31T02:12:23",
   "created_by": "jungfrau@mx-spark-01",
-  "hyperparams": {},
-  "version": null,
-  "metrics": {},
+  "hyperparams": {
+    "epochs": 400,
+    "patience": 50,
+    "imgsz": 640,
+    "batch": 16,
+    "device": "0",
+    "overlap_mask": false,
+    "scale": 0.7,
+    "translate": 0.15,
+    "mosaic": 0.5,
+    "close_mosaic": 10,
+    "fliplr": 0,
+    "flipud": 0.3,
+    "shear": 5.0,
+    "perspective": 0.0,
+    "mask_ratio": 1
+  },
+  "version": "yolo26s-seg-v6-s-noflip-mask1-2026-10-31",
+  "metrics": {
+    "f1": 0.7912584777694047,
+    "mean_mask_iou": 0.8743077743877599,
+    "gate_pass": false,
+    "baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json",
+    "measured_at": "2026-10-31T12:29:06"
+  },
   "history": [
     {
       "status": "exported",
       "at": "2026-10-31T02:12:23",
       "by": "jungfrau@mx-spark-01",
       "note": "promoted recipe (fliplr 0, mask_ratio 1) with yolo26s on dataset v6: gate only until its beamline speed is known, Spark"
+    },
+    {
+      "status": "training",
+      "at": "2026-10-31T02:12:23",
+      "by": "jungfrau@mx-spark-01",
+      "note": "train_run.py"
+    },
+    {
+      "status": "measured",
+      "at": "2026-10-31T12:29:06",
+      "by": "jungfrau@mx-spark-01",
+      "note": ""
+    },
+    {
+      "status": "gate_failed",
+      "at": "2026-10-31T12:29:06",
+      "by": "jungfrau@mx-spark-01",
+      "note": "{\"baseline\": \"/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json\", \"f1_delta\": -0.0018, \"mask_iou_delta\": -0.0071, \"mask_score\": 0.6841, \"mask_score_baseline\": 0.6912, \"matched_only_iou_delta\": -0.0024, \"class_f1_delta\": {\"loop_all\": 0.0103, \"pin\": -0.0124}, \"pass_point_rule\": false, \"rule\": \"paired bootstrap\", \"bootstrap\": {\"frames\": 288, \"mounts\": 260, \"draws\": 2000, \"f1\": {\"delta\": -0.0018, \"lo\": -0.0234, \"hi\": 0.0205, \"win\": 0.422}, \"mask_score\": {\"delta\": -0.0071, \"lo\": -0.0228, \"hi\": 0.0075, \"win\": 0.172}}, \"pass\": false}"
     }
-  ]
+  ],
+  "host": "mx-spark-01",
+  "started": "2026-10-31T02:12:23"
 }
diff --git a/runs/README.md b/runs/README.md
index 2285699f..11b87403 100644
--- a/runs/README.md
+++ b/runs/README.md
@@ -28,6 +28,7 @@ Generated by `python tools/ledger.py render`; do not edit by hand.
 | 2026-10-25_v5-warm | gate_failed | dataset/2026-10-22_v5 | models/registry/yolo26n-seg-v4-noflip-mask1-2026-10-02/weights.pt | weights-seg-v5-warm-2026-10-26 | 0.757 | 0.861 | no | 2026-10-26T01:43 |
 | 2026-10-26_v5h-noflip-mask1 | gate_failed | dataset/2026-10-26_v5h | models/base/yolo26n-seg.pt | yolo26n-seg-v5h-noflip-mask1-2026-10-26 | 0.716 | 0.866 | no | 2026-10-26T09:16 |
 | 2026-10-30_v6-noflip-mask1 | gate_failed | dataset/2026-10-30_v6 | models/base/yolo26n-seg.pt | yolo26n-seg-v6-noflip-mask1-2026-10-31 | 0.775 | 0.873 | no | 2026-10-31T02:12 |
+| 2026-10-31_v6-s-noflip-mask1 | gate_failed | dataset/2026-10-30_v6 | models/base/yolo26s-seg.pt | yolo26s-seg-v6-s-noflip-mask1-2026-10-31 | 0.791 | 0.874 | no | 2026-10-31T12:29 |
 
 States: exported → queued → training → measured → gate_passed → gate_failed → promoted → deployed (or aborted).
 
@@ -229,3 +230,10 @@ States: exported → queued → training → measured → gate_passed → gate_f
 - 2026-10-30T16:52:13 · training · jungfrau@mx-spark-01 — train_run.py
 - 2026-10-31T02:12:12 · measured · jungfrau@mx-spark-01
 - 2026-10-31T02:12:12 · gate_failed · jungfrau@mx-spark-01 — {"baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json", "f1_delta": -0.0179, "mask_iou_delta": -0.0252, "mask_score": 0.666, "mask_score_baseline": 0.6912, "matched_only_iou_delta": -0.0039, "class_f1_delta": {"loop_all": -0.0003, "pin": -0.0321}, "pass_point_rule": false, "rule": "paired bootstrap", "bootstrap": {"frames": 288, "mounts": 260, "draws": 2000, "f1": {"delta": -0.0179, "lo": -0.0412, "hi": 0.0051, "win": 0.066}, "mask_score": {"delta": -0.0252, "lo": -0.043, "hi": -0.0077, "win": 0.002}}, "pass": false}
+
+## 2026-10-31_v6-s-noflip-mask1
+
+- 2026-10-31T02:12:23 · exported · jungfrau@mx-spark-01 — promoted recipe (fliplr 0, mask_ratio 1) with yolo26s on dataset v6: gate only until its beamline speed is known, Spark
+- 2026-10-31T02:12:23 · training · jungfrau@mx-spark-01 — train_run.py
+- 2026-10-31T12:29:06 · measured · jungfrau@mx-spark-01
+- 2026-10-31T12:29:06 · gate_failed · jungfrau@mx-spark-01 — {"baseline": "/home/jungfrau/AareLC_train/models/registry/yolo26s-seg-v5-s-noflip-mask1-2026-10-25/gold_report.json", "f1_delta": -0.0018, "mask_iou_delta": -0.0071, "mask_score": 0.6841, "mask_score_baseline": 0.6912, "matched_only_iou_delta": -0.0024, "class_f1_delta": {"loop_all": 0.0103, "pin": -0.0124}, "pass_point_rule": false, "rule": "paired bootstrap", "bootstrap": {"frames": 288, "mounts": 260, "draws": 2000, "f1": {"delta": -0.0018, "lo": -0.0234, "hi": 0.0205, "win": 0.422}, "mask_score": {"delta": -0.0071, "lo": -0.0228, "hi": 0.0075, "win": 0.172}}, "pass": false}