Smoother sidebar, smarter lists

New

• List item reordering — move list items up and down with keyboard shortcuts
• Animated sidebar — folder expand/collapse, file reordering, and Favorites changes all animate smoothly instead of snapping into place
• Relative timestamps in the sidebar show "Today", "Yesterday", and short dates without the year

Improved

• Completed tasks now appear dimmed instead of struck through, easier to scan past
• Favorites header gets a star glyph and a cleaner look without the divider
• Markdown tables now size columns to fit their content and wrap gracefully instead of clipping or overflowing
• Navigating into a folder scrolls the sidebar to keep the location header visible

Fixed

• Indenting or outdenting a list item into a different list type (e.g. numbered under a bullet parent) now adapts the marker automatically instead of only changing whitespace
• Non-folder items in the sidebar align correctly with folder icons
• Wrapped lines in source lists stay properly aligned
• Quick Open no longer highlights a row until you actually move the cursor
• Selected sidebar rows use a softer background for better contrast