- Fixed critical bug where notes with empty category had malformed IDs (leading slash)
- Added URL encoding for Czech and Unicode characters in WebDAV paths
- Fixed filename sanitization to preserve Unicode characters (only remove filesystem-unsafe chars)
- Updated note preview to show first non-empty line after title instead of repeating title
- Adjusted default column widths for better proportions (increased window width to 1300px)
- Protection mechanism now works correctly with proper note ID matching
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