v1.2.1 - Append Mode (Preserve Your Annotations)

🔥 Important: Append Mode

Sync now appends new messages instead of deleting and recreating notes!

What This Means

• ✅ Your highlights are preserved
• ✅ Your annotations are preserved
• ✅ Your backlinks are preserved
• ✅ Your comments are preserved

How It Works

When a conversation continues:

1. Sync counts existing messages in your note
2. Only NEW messages are appended
3. Existing content is never deleted

Full Changelog

• 🔥 Append mode: New messages appended, existing content preserved
• 📝 Documentation: Added "How Sync Works" section to README
• 🐛 Fix: Stable filenames using file creation time (birthtime)

Full Changelog: 1.2.0...1.2.1