claim session 0057 (placeholder) + sessions.json entry

0057/SESSION-0057.0-TRANSCRIPT-2026-06-01T05-40--INPROGRESS.md

@@ -0,0 +1,15 @@
+# Session 0057.0 — Transcript
+
+> Date: 2026-06-01
+> Start: 2026-06-01T05-40 (PST implied)
+> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
+>
+> This file reserves session ID 0057. The driver replaces this body
+> with the full transcript before publishing, and renames the file to
+> its final SESSION-0057.0-TRANSCRIPT-2026-06-01T05-40--<end>.md form.
+
+---
+
+## Launch prompt
+
+_(launch prompt not captured at claim time)_

sessions.json

@@ -154,5 +154,8 @@
   },
   "0056": {
     "title": ""
+  },
+  "0057": {
+    "title": ""
   }
 }