diff --git a/sessions/0028/SESSION-0028.0-TRANSCRIPT-2026-06-11T21-25--INPROGRESS.md b/sessions/0028/SESSION-0028.0-TRANSCRIPT-2026-06-11T21-25--INPROGRESS.md
new file mode 100644
index 0000000..294c907
--- /dev/null
+++ b/sessions/0028/SESSION-0028.0-TRANSCRIPT-2026-06-11T21-25--INPROGRESS.md
@@ -0,0 +1,27 @@
+# Session 0028.0 — Transcript
+
+> App: vscode-cowriting-plugin
+> Start: 2026-06-11T21-25 (PST)
+> Type: capture
+> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
+>
+> This file reserves session ID 0028 for vscode-cowriting-plugin. The driver replaces this
+> body with the full transcript and renames the file to its final
+> SESSION-0028.0-TRANSCRIPT-2026-06-11T21-25--<end>.md form at session end.
+
+## Launch prompt
+
+```
+Capture session: file an issue for the markdown cowriting product vision —
+clean zero-annotation editor (left) + interactive annotated markdown preview
+(right) as the single review surface; annotations on/off toggle; per-author
+track-changes (green=human, blue=LLM, strikethrough=deleted) with ✓/✗
+accept-reject on LLM changes only, driven from inside the preview. Markdown-only.
+
+```
+
+## 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/sessions/sessions.json b/sessions/sessions.json
index 9645ab5..45b451b 100644
--- a/sessions/sessions.json
+++ b/sessions/sessions.json
@@ -79,5 +79,8 @@
   },
   "0027": {
     "title": ""
+  },
+  "0028": {
+    "title": ""
   }
 }