diff --git a/sandbox.json b/sandbox.json
new file mode 100644
index 000000000..03cd79b10
--- /dev/null
+++ b/sandbox.json
@@ -0,0 +1,4 @@
+{
+  "provider": "local",
+  "working_directory": "/var/folders/nm/bd2dwzy52t1ckn3tklsfmy1c0000gn/T/.tmpVH8idZ/fabro-data/runs/20260328-dry-run-01KMTNHJ4D3TP79J7HT5DBKQ0X/worktree"
+}
\ No newline at end of file
diff --git a/start.json b/start.json
new file mode 100644
index 000000000..a9792eceb
--- /dev/null
+++ b/start.json
@@ -0,0 +1,6 @@
+{
+  "run_id": "01KMTNHJ4D3TP79J7HT5DBKQ0X",
+  "start_time": "2026-03-28T16:48:25.177564Z",
+  "run_branch": "fabro/run/01KMTNHJ4D3TP79J7HT5DBKQ0X",
+  "base_sha": "8fa85b2be1777cbe972c0781ad462f3f73b2546e"
+}
\ No newline at end of file