Create Demo GIF for README

[hulksunil]

Description
Create a short demo GIF showcasing core features (mouse movement, clicks, scrolling, etc.) and embed it in README.md.

Acceptance Criteria

• GIF clearly demonstrates main interactions in ≤ 10–15 seconds
• Optimized file size for quick loading
• Embedded in README.md with alt text and brief caption
• Source project files (script/assets) saved for future updates

Notes

• Record at high FPS, then downscale/optimize (e.g., via ffmpeg/gifski)