Sound design pass: ring pass, boost, countdown, finish

Description

The game is currently silent. Adding targeted sounds at key moments dramatically increases player feedback and immersion. This is a polish pass covering the four highest-impact audio moments.

Acceptance Criteria

• Ring pass: plays a distinct "ding" sound (ENTITY_EXPERIENCE_ORB_PICKUP or similar) at the ring center position, heard within 16 blocks
• Boost activation: plays a whoosh sound (ENTITY_FIREWORK_ROCKET_LAUNCH) at the player
• Countdown (3-2-1-GO): plays a note block click for 3/2/1 and a distinct go sound for GO
• Finish line crossing: plays UI_TOAST_CHALLENGE_COMPLETE or ENTITY_PLAYER_LEVELUP at the player
• Each sound has appropriate volume (0.8) and pitch tuning
• All sounds are played via Minestom sound packet, not Bukkit

Technical Details

• Sound triggers in: CollisionSystem (ring pass), BoostSystem (boost), PreparationPhase countdown, GamePhase finish detection
• Use Minestom SoundEvent enum or custom sound key

Dependencies

• None (sounds are additive — no existing feature breaks)

Estimate

S

Start by reading the sound-trigger locations named in CollisionSystem, BoostSystem, PreparationPhase, and GamePhase, then inspect how Minestom SoundEvent or custom sound keys are sent. Add the four specified sounds with volume 0.8 and tuned pitch, and verify each trigger uses a Minestom sound packet and matches the acceptance criteria.