diff --git a/sandbox.json b/sandbox.json
new file mode 100644
index 000000000..f46d1a0d6
--- /dev/null
+++ b/sandbox.json
@@ -0,0 +1,4 @@
+{
+  "provider": "local",
+  "working_directory": "/var/folders/nm/bd2dwzy52t1ckn3tklsfmy1c0000gn/T/.tmpTXwAze/fabro-data/runs/20260328-dry-run-01KMV5KFRQ4CCEZ5VV76VG4BP2/worktree"
+}
\ No newline at end of file
diff --git a/start.json b/start.json
new file mode 100644
index 000000000..eedad1199
--- /dev/null
+++ b/start.json
@@ -0,0 +1,6 @@
+{
+  "run_id": "01KMV5KFRQ4CCEZ5VV76VG4BP2",
+  "start_time": "2026-03-28T21:29:05.620342Z",
+  "run_branch": "fabro/run/01KMV5KFRQ4CCEZ5VV76VG4BP2",
+  "base_sha": "5fc10debb07376c1e3a3078e45a71a63a7ac0b0f"
+}
\ No newline at end of file