Add Shuffle Board Power-Up Feature (PR Reference #64)

[JwelSrivastava]

🧩 Description

This issue tracks the implementation of the Shuffle Board Power-Up feature that allows players to reshuffle all unmatched cards once per game, adding a strategic twist to gameplay.
It corresponds to Pull Request #64: Added Shuffle Board Power-Up for Unmatched Cards
.

🔑 Feature Summary

Added Shuffle button beside game controls.

Available once per game.

Affects only unmatched cards.

Added spin animation during shuffle.

Deducts points/stars as a penalty for using it.

Disabled in Easy mode for balance.

🧪 Tested On

✅ Desktop and mobile

✅ Medium & Hard difficulties

✅ Verified matched cards remain unaffected

🕹️ Hacktoberfest 2025

This issue is linked to a Hacktoberfest 2025 contribution and tracks the PR mentioned above.

[Gowtham2801031902]

Assign this issue to me