Problem

Terminal copy/paste is broken on Windows:

1. Copy doesn't work — selecting text in a terminal session and copying does nothing
2. Paste duplicates text — pasting into the terminal sometimes inserts the clipboard content twice

Expected Behavior

• Copy from terminal selection should work (Ctrl+C or right-click copy)
• Paste should insert clipboard content exactly once

Context

Reported alongside #75 (Windows installer). Likely related to how xterm.js handles clipboard events on Windows — VS Code's xterm.js integration has similar edge cases worth researching.

Environment

• Platform: Windows
• Terminal: xterm.js + node-pty