Fixed

• YAML frontmatter serializer now escapes newlines, tabs, backslashes, and quotes in strings. Previously multi-line strings corrupted the YAML file structure on roundtrip.
• YAML frontmatter parser now unescapes \n, \t, \", and \\ in double-quoted strings.

Changed

• Default feature visibility now shows a curated set (Summary, List, Board, Portfolio, Milestones, People, Notes, Brains) instead of all features. Existing projects with explicit feature config are not affected. Enable more features via Settings > Feature Visibility.