Upload AtomPack dataset shards

.gitattributes

@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+matpes/r2scan/data.atp filter=lfs diff=lfs merge=lfs -text

matpes/r2scan/manifest.json

@@ -0,0 +1,17 @@
+{
+  "created_at_utc": "2026-02-12T11:19:48.075361+00:00",
+  "dataset": "matpes",
+  "variant": "r2scan",
+  "spec": "matpes:r2scan",
+  "n_samples": 387897,
+  "max_samples_per_file": 10000000,
+  "n_files": 1,
+  "num_workers": 10,
+  "batch_size": 4096,
+  "compression": "zstd",
+  "compression_level": 3,
+  "output_files": [
+    "data.atp"
+  ],
+  "elapsed_seconds": 102.45248341560364
+}