fix: initialize voice encryption libs before first connection

- await sodium.ready + nacl preload (same as original jukebox)
- Add generateDependencyReport() for debugging
- Add type declarations for libsodium-wrappers and tweetnacl

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/plugins/soundboard/index.ts

@@ -9,8 +9,11 @@ import {
   joinVoiceChannel, createAudioPlayer, createAudioResource,
   AudioPlayerStatus, NoSubscriberBehavior, getVoiceConnection,
   VoiceConnectionStatus, StreamType, entersState,
+  generateDependencyReport,
   type VoiceConnection, type AudioResource,
 } from '@discordjs/voice';
+import sodium from 'libsodium-wrappers';
+import nacl from 'tweetnacl';
 import { ChannelType, Events, type VoiceState, type Message } from 'discord.js';
 import type { Plugin, PluginContext } from '../../core/plugin.js';
 import { sseBroadcast } from '../../core/sse.js';
@@ -481,6 +484,12 @@ const soundboardPlugin: Plugin = {
     fs.mkdirSync(SOUNDS_DIR, { recursive: true });
     fs.mkdirSync(NORM_CACHE_DIR, { recursive: true });
     persistedState = readPersistedState();
+
+    // Voice encryption libs must be initialized before first voice connection
+    await sodium.ready;
+    void nacl.randomBytes(1);
+    console.log(generateDependencyReport());
+
     console.log(`[Soundboard] ${listAllSounds().length} sounds, ${persistedState.totalPlays ?? 0} total plays`);
   },