Add reaction-based status feedback for prefix SFX commands

- Implement reaction progression: 🔊 (playing) → ✅ (finished)
- Remove permissions-heavy removeAll() call that was causing errors
- Add error reaction (❌) for failed sound playback
- Fallback to text reply if reactions fail (permission handling)
- Maintain clean chat experience with minimal visual feedback

Status Flow:
- !sfx command starts: 🔊 reaction added
- Sound finishes playing: ✅ reaction added (both visible)
- Error occurs: ❌ reaction added

Now all SFX interfaces provide consistent status feedback:
- Prefix: Reaction-based progression
- Slash commands: Ephemeral message updates

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/services/sfxManager.js

@@ -223,6 +223,9 @@ class SFXManager {
     }
 
     try {
+      // React with speaker icon to show playing status
+      await message.react('🔊');
+
       // Join the voice channel
       await voiceService.join(message.member.voice.channel);
 
@@ -232,6 +235,9 @@ class SFXManager {
         volume: guildConfig.sfxVolume || 0.5,
       });
 
+      // Add completion reaction (keep both speaker and checkmark)
+      await message.react('✅');
+
       // Leave the voice channel after playing
       setTimeout(() => {
         voiceService.leave(message.guild.id);
@@ -241,9 +247,16 @@ class SFXManager {
 
     } catch (error) {
       console.error(`❌ Error playing SFX '${sfxName}':`, error);
+      
+      // Add error reaction
+      try {
+        await message.react('❌');
+      } catch (reactionError) {
+        // If reactions fail, fall back to reply
         await message.reply("❌ Couldn't play that sound effect. Make sure I have permission to join your voice channel!");
       }
     }
+  }
 }
 
 module.exports = new SFXManager();