Add shard_00049.manifest.json

manifests/shard_00049.manifest.json

@@ -0,0 +1,18 @@
+{
+  "shard_id": 49,
+  "rows": 199764,
+  "size_mb": 214.5,
+  "compression": "zstd",
+  "source_breakdown": {
+    "finewiki": 0.3946,
+    "cosmopedia_v2": 0.0979,
+    "arithmetic": 0.1378,
+    "fineweb_edu": 0.1961,
+    "tiny_textbooks": 0.0138,
+    "mini_en": 0.01,
+    "python_edu": 0.1182,
+    "tiny_strange": 0.0314
+  },
+  "created_at": "2026-07-13T19:58:26.904121Z",
+  "run_name": "bison-data-v2"
+}