Add Morse Code Translator tool

[anshulkhare7]

Summary

This PR adds a new interactive Morse Code Translator tool that allows users to encode text to Morse code and decode Morse code back to text, with audio playback capabilities.

Key Changes

• New tool: tools/morse-code.html - A complete, self-contained Morse code translator application
• Bidirectional translation:
  • Text to Morse code conversion with real-time rendering
  • Morse code to text decoding with support for standard notation (dots, dashes, spaces, and forward slashes for word separation)
• Audio playback: Web Audio API integration to play Morse code as audio tones (600 Hz sine wave) with proper timing (dots, dashes, and gaps)
• Visual feedback:
  • Character-by-character highlighting during audio playback
  • Real-time output rendering as user types
  • Toast notifications for user actions
• Reference chart: Collapsible reference guide showing Morse code mappings for A-Z and 0-9
• Responsive design: Mobile-friendly layout with dark theme and accessible UI
• User controls:
  • Tab-based mode switching between encoding and decoding
  • Play/Stop audio buttons
  • Copy output to clipboard functionality

Implementation Details

• Comprehensive Morse code character mapping (A-Z, 0-9)
• Proper timing implementation: dots (0.1s), dashes (0.3s), symbol gaps (0.1s), letter gaps (0.3s), word gaps (0.7s)
• Visual highlighting synchronized with audio playback using requestAnimationFrame
• Audio context management with proper initialization and cleanup
• Semantic HTML structure with embedded CSS and JavaScript for easy deployment

https://claude.ai/code/session_01LpqLzE3ZbsHLg5ppdp5KUq