Added

• Full filesystem scan via jwalk with parallel traversal (getattrlistbulk path on macOS)
• DuckDB embedded storage — persistent snapshots in ~/Library/Application Support/disky/
• Interactive TUI (ratatui) — ncdu-style directory tree, size bars, keybindings
• CLI subcommands: scan, tui, top, dirs, ext, find, stats, list
• memchr-based extension extraction (zero alloc)
• Batch Appender API for DuckDB (50k entries/batch)
• HTML cleanup report export (e key in TUI or auto-generated)
• Snapshot management — auto-named YYYY-MM-DD_HH-MM.db
• macOS Finder integration (o key opens selected path)
• Clipboard copy (c key copies path)