v0.1.3

feat: v0.1.3 - UI overhaul + Windows fix

- Remove top 2 rows, add clickable status bar
- Mode dropdown menu ([ASCII]/[HEX]/[UTF8]) with 256-color toggle
- 256-color gradient mode label (blue→purple)
- Click @address to goto byte, click pack to goto page
- Click Ctrl+H:help to open help
- Mouse drag selection support
- Ctrl+C copy with mode-aware output (ASCII/HEX/UTF8)
- Windows: filter KeyEventKind::Repeat + 40ms throttle for key double-click fix
- Pack info in hex format in status bar