feat : simon-says : "Add difficulities"

[NanditaPatil-dotcom]

close issue #110

Summary

Added strict mode and difficulty levels to the Simon Says game as requested in the task.

Changes Made

1. UI Changes:

• Added "Strict Mode" checkbox toggle in the options section
• Added difficulty selector dropdown with Easy, Medium (default), and Hard options

2. Logic Changes:

• Strict Mode: When enabled, any incorrect input immediately ends the game instead of replaying the sequence
• Difficulty Levels:
  • Easy: Slower playback (500ms), longer gaps (400ms), visual cues enabled
  • Medium: Default speed (350ms), medium gaps (300ms), visual cues enabled
  • Hard: Fast playback (200ms), short gaps (200ms), visual cues disabled (sound only)

3. Code Updates:

• Extended state object with strictMode and difficulty properties
• Added DOM references for new UI elements
• Created DIFFICULTY_CONFIG object for difficulty settings
• Modified playbackSequence() to use difficulty-based timing and visual settings
• Updated handlePlayerInput() to implement strict mode game-over logic
• Added event listeners for the new toggles
• Updated TODO comments to reflect completed implementation

Checklist

• Linked issue (if any)
• Ran locally without console errors
• Focused scope (kept PR small)
• Updated docs or TODO comments if needed

Screenshots

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[venisha-kalola]

add #(issue Number) in PR request

[NanditaPatil-dotcom]

add #(issue Number) in PR request

i have mentioned
close issue #110