diff --git a/echo-memory.plugin b/echo-memory.plugin
index 0f9bf93..baa5797 100644
Binary files a/echo-memory.plugin and b/echo-memory.plugin differ
diff --git a/echo-memory.plugin.src/.claude-plugin/plugin.json b/echo-memory.plugin.src/.claude-plugin/plugin.json
index 69ad35c..640ca8c 100644
--- a/echo-memory.plugin.src/.claude-plugin/plugin.json
+++ b/echo-memory.plugin.src/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "echo-memory",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Persistent memory via the ECHO Obsidian vault over the Local REST API. Reads and writes notes across Claude/CoWork sessions using direct REST calls \u2014 no MCP server required. Jason's personal memory vault.",
   "author": {
     "name": "Jason"
diff --git a/echo-memory.plugin.src/skills/echo-memory/SKILL.md b/echo-memory.plugin.src/skills/echo-memory/SKILL.md
index fc9ea9a..ec04ed0 100644
--- a/echo-memory.plugin.src/skills/echo-memory/SKILL.md
+++ b/echo-memory.plugin.src/skills/echo-memory/SKILL.md
@@ -270,7 +270,7 @@ After substantive activity, write a one-line entry to today's daily note's `## A
 
 1. Try to GET `journal/daily/YYYY-MM-DD.md`.
 2. If 404 — PUT a fresh daily note from the template, then PATCH.
-3. If 200 but `## Agent Log` is missing — POST `\n\n## Agent Log\n` to the file to add the heading, then PATCH.
+3. If 200 but `## Agent Log` is missing — POST `\n\n## Agent Log\n` to the file to add the heading, then PATCH. **Detect the heading by grepping the raw markdown for an anchored `^## Agent Log` line — do NOT grep the document-map JSON, whose headings are full `::`-delimited paths (e.g. `"2026-06-07::Agent Log"`); a bare `"Agent Log"` match fails there and a duplicate heading gets appended.**
 4. PATCH-append the entry under the target `<YYYY-MM-DD>::Agent Log` (the H1 of a daily note is the date, so that's the full target path).
 
 ```bash
@@ -286,9 +286,11 @@ if [ "$HTTP" = "404" ]; then
     | curl -s -X PUT -H "$AUTH" -H "Content-Type: text/markdown" --data-binary @- "$DAILY"
 fi
 
-# 3: ensure the `## Agent Log` heading exists
-MAP=$(curl -s -H "$AUTH" -H "Accept: application/vnd.olrapi.document-map+json" "$DAILY")
-if ! printf '%s' "$MAP" | grep -q '"Agent Log"'; then
+# 3: ensure the `## Agent Log` heading exists.
+# Grep the RAW markdown for an anchored heading line. Do NOT grep the document-map
+# JSON: its headings are full "::"-delimited paths (e.g. "2026-06-07::Agent Log"), so a
+# bare '"Agent Log"' match never matches and a DUPLICATE heading gets appended each time.
+if ! curl -s -H "$AUTH" "$DAILY" | grep -q '^## Agent Log'; then
   printf '\n\n## Agent Log\n' | curl -s -X POST -H "$AUTH" -H "Content-Type: text/markdown" --data-binary @- "$DAILY"
 fi