diff --git a/b2/ef4fe032af6b7a0fbf6e9ae19ff54c0941a031 b/b2/ef4fe032af6b7a0fbf6e9ae19ff54c0941a031
new file mode 100644
index 00000000..b472a54b
--- /dev/null
+++ b/b2/ef4fe032af6b7a0fbf6e9ae19ff54c0941a031
@@ -0,0 +1,19 @@
+Dockerfile
+  s_5e83b7ac3f0fa4::t_7d9e7dd0446011 13,16
+---
+{
+  "schema_version": "authorship/3.0.0",
+  "git_ai_version": "1.7.0",
+  "base_commit_sha": "b2ef4fe032af6b7a0fbf6e9ae19ff54c0941a031",
+  "prompts": {},
+  "sessions": {
+    "s_5e83b7ac3f0fa4": {
+      "agent_id": {
+        "tool": "codex",
+        "id": "01a03e91-07ec-7cd0-b057-6702ac3133b9",
+        "model": "gpt-5.6-sol"
+      },
+      "human_author": "Nick Sweeting <git@sweeting.me>"
+    }
+  }
+}
\ No newline at end of file