fix(bib/sync): wrap Zotero notes in zotero-note envelope

Without the <div class="zotero-note znv1"> wrapper, Zotero treats the
note body as plain text on next launch and HTML-escapes every tag,
turning rendered output into a wall of source. The envelope is
Zotero's own sigil for "I already produced this HTML, leave it alone."

Idempotent — wraps only if not already prefixed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/bib/sync.py

@@ -539,7 +539,13 @@ def _sync_notes(
         title = row["title"] or ""
         if title in existing_titles:
             continue
-        db.add_note(zot_parent_id, row["content"], title=title)
+        # Zotero recognizes notes already in its envelope and leaves the
+        # HTML alone; without it, on next launch Zotero treats the body
+        # as plain text and HTML-escapes every tag.
+        body = row["content"] or ""
+        if not body.startswith('<div class="zotero-note'):
+            body = f'<div class="zotero-note znv1">{body}</div>'
+        db.add_note(zot_parent_id, body, title=title)
         existing_titles.add(title)
         count += 1
     return count

tests/bib/test_sync.py

@@ -454,7 +454,12 @@ class TestSyncNotes:
         con = sqlite3.connect(zot_db)
         rows = con.execute("SELECT title, note FROM itemNotes").fetchall()
         con.close()
-        assert rows == [("Comment text", "<h1>Body</h1><p>text</p>")]
+        assert rows == [
+            (
+                "Comment text",
+                '<div class="zotero-note znv1"><h1>Body</h1><p>text</p></div>',
+            )
+        ]
 
     def test_resync_is_idempotent(self, tmp_path):
         """Second sync must not duplicate the note (dedup by parent + title)."""