diff --git a/engineering/0013/SESSION-0013.0-TRANSCRIPT-2026-06-10T13-40--INPROGRESS.md b/engineering/0013/SESSION-0013.0-TRANSCRIPT-2026-06-10T13-40--INPROGRESS.md
new file mode 100644
index 0000000..4d1bf1b
--- /dev/null
+++ b/engineering/0013/SESSION-0013.0-TRANSCRIPT-2026-06-10T13-40--INPROGRESS.md
@@ -0,0 +1,21 @@
+# Session 0013.0 — Transcript
+
+> App: engineering
+> Start: 2026-06-10T13-40 (PST)
+> Type: capture
+> Claude-Session: 470ebb13-df6e-4b41-90b7-3ffda216e8ec
+> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
+>
+> This file reserves session ID 0013 for engineering. The driver replaces this
+> body with the full transcript and renames the file to its final
+> SESSION-0013.0-TRANSCRIPT-2026-06-10T13-40--<end>.md form at session end.
+
+## Launch prompt
+
+_(launch prompt not captured at claim time)_
+
+## Deferred decisions
+
+_Autonomous-mode low-confidence calls the driver made and would have
+liked operator input on. Appended as the session runs; surfaced at
+finalize. Empty if none._
diff --git a/engineering/sessions.json b/engineering/sessions.json
index 575794d..6cd8c03 100644
--- a/engineering/sessions.json
+++ b/engineering/sessions.json
@@ -34,5 +34,8 @@
   },
   "0012": {
     "title": ""
+  },
+  "0013": {
+    "title": ""
   }
 }