Add strict YES validation to confirm prompt

[babarot]

WHAT

This PR adds a new strict YES validation feature to the confirm prompt component. It enforces exact "YES" (uppercase) input and provides real-time visual feedback with colored validation indicators.

• Strict validation that only accepts uppercase "YES"
• Character-by-character input validation (Y->E->S sequence only)
• Real-time visual feedback with colored indicators
  • Green checkmark (✓) for valid input
  • Red cross (✗) for invalid/incomplete input
• Cancel operation using Ctrl+C or Esc
• Backspace always allowed for corrections

WHY

The motivation for this change comes from two key observations:

1. Prevention of Accidental Execution
   • Traditional Y/N prompts are too easy to confirm by muscle memory
   • Critical operations need more deliberate confirmation
   • Single-character confirmation can lead to accidental execution of dangerous operations
   • Requiring "YES" in uppercase makes users more conscious of their actions
2. Inspired by GitHub's Repository Deletion
   • GitHub requires users to type the full repository name to confirm deletion
   • This pattern has proven effective in preventing accidental deletions
   • Similar approach for critical operations in CLI tools can provide the same safety benefits

This implementation brings that same level of safety to CLI applications, making users take a moment to consider their actions before proceeding with potentially destructive operations.