Add shard_00065.manifest.json

bison-data-v1/shard_00065.manifest.json

@@ -0,0 +1,13 @@
+{
+  "shard_id": 65,
+  "rows": 137159,
+  "size_mb": 77.39,
+  "compression": "zstd",
+  "source_breakdown": {
+    "python_edu": 0.255,
+    "tiny_math": 0.3,
+    "arithmetic": 0.445
+  },
+  "created_at": "2026-06-24T16:06:36.068929Z",
+  "run_name": "bison-data-v1"
+}