v0.2.0

Changelog

• 2409173 Add CLI new/append, alt+1..9 jump, tab overflow; help key -> ^/
• b9d8868 Add curl install script for Linux/macOS
• a58e48a Add live split preview (^b)
• 4cc945f Add restore-last-tab, checkbox toggle, --list, word count
• 9990ae5 Add undo/redo; split main.go into cohesive files
• c1d98ff Avoid Glamour OSC background query; add PAD_THEME
• d3f404b Debounce markdown rendering; move tab on ctrl+arrows
• b1ec07c Polish: status auto-clear, empty-state hint, TUI tests
• 6091590 Release v0.2.0