diff --git a/flotilla-core/0001/SESSION-0001.0-TRANSCRIPT-2026-06-06T22-53--INPROGRESS.md b/flotilla-core/0001/SESSION-0001.0-TRANSCRIPT-2026-06-06T22-53--INPROGRESS.md
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+# Session 0001.0 — Transcript
+
+> App: flotilla-core
+> Start: 2026-06-06T22-53 (PST)
+> Type: coding
+> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
+>
+> This file reserves session ID 0001 for flotilla-core. The driver replaces this
+> body with the full transcript and renames the file to its final
+> SESSION-0001.0-TRANSCRIPT-2026-06-06T22-53--<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/flotilla-core/sessions.json b/flotilla-core/sessions.json
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+++ b/flotilla-core/sessions.json
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+{
+  "0001": {
+    "title": ""
+  }
+}