Fix EQ/reverb double-application and increase impulse reverb intensity

[cdrani]

Summary

• Fix race condition causing EQ and reverb effects to be applied twice during audio chain initialization
• Increase impulse reverb wet/dry mix intensity for more audible effects
• Remove dead code and debug logs

Changes

Audio Effects Double-Application Fix

• Remove REQUEST_EFFECT_REAPPLY postMessage dispatch that caused duplicate effect application
• Fix disconnect() in AudioManager to cleanup effect chain before clearing references
• Call setEffect() in processMediaPlayInit() to apply effects on first play
• Remove dead REQUEST_EFFECT_REAPPLY listeners from effects, playback, volume, and ms-params stores

Impulse Reverb Intensity

• Increase wet signal levels for more noticeable effects:
  • kick_ir: 5% → 50%
  • muffler_ir: 10% → 60%
  • diffusor_ir: 10% → 60%
  • telephone_ir: 35% → 70%

Cleanup

• Remove debug console.log statements from reverb and ms-processor
• Upgrade wxt to 0.19.29

Test plan

• Toggle EQ presets and verify effects are applied once (no volume changes from double-application)
• Enable reverb and verify it's applied correctly without distortion
• Test impulse reverb presets (kick, muffler, diffusor, telephone) and verify they are audible
• Verify effects are applied on first play
• Verify effects persist across song changes