diff --git a/sandbox.json b/sandbox.json
new file mode 100644
index 000000000..8163f6f92
--- /dev/null
+++ b/sandbox.json
@@ -0,0 +1,4 @@
+{
+  "provider": "local",
+  "working_directory": "/var/folders/nm/bd2dwzy52t1ckn3tklsfmy1c0000gn/T/.tmp85esw5/fabro-data/runs/20260328-dry-run-01KMTNQAKX9A3JBZYCWWT87277/worktree"
+}
\ No newline at end of file
diff --git a/start.json b/start.json
new file mode 100644
index 000000000..10dd6ff1f
--- /dev/null
+++ b/start.json
@@ -0,0 +1,6 @@
+{
+  "run_id": "01KMTNQAKX9A3JBZYCWWT87277",
+  "start_time": "2026-03-28T16:51:34.046974Z",
+  "run_branch": "fabro/run/01KMTNQAKX9A3JBZYCWWT87277",
+  "base_sha": "8fa85b2be1777cbe972c0781ad462f3f73b2546e"
+}
\ No newline at end of file