This update adds configurable sound effects to the Mines GUI to make rounds feel more responsive and satisfying.

What's new:

• Added sound cues when opening or reopening a board
• Added reward sounds for safe tile reveals
• Added negative feedback sounds for mine hits
• Added payout sounds for cashouts
• Added a bigger celebration sound for full-board clears
• Added a slight pitch ramp on safe-pick streaks so repeated wins feel more rewarding
• Added configurable sound settings in gui.yml, including layered sounds, volume, pitch, and delay-ticks
• Updated the README to document the new sound system, /minestop leaderboard details, and automatic YAML key merging behavior

Config:

• GUI sounds can be enabled or disabled with sounds.enabled
• Each event supports one or more sound layers: board-open safe-pick mine-hit cashout board-cleared

Admins can retune the sound theme directly in plugins/NotMines/gui.yml without rebuilding the plugin.