refactor: remove voice, recording, and music/media features (gateway + backend)

- Gateway: delete voice-recording/, voice-pcm-ws/, voice/video/media handlers,
  vendor/discord-voice-fork/, voice DB repos, 2 voice migrations
- Gateway: cut voice wiring from bootstrap/shutdown/commandHandler/handler-registry,
  eventBroadcaster/eventTypes, redis-channels, moderation-types, message-capture,
  config keys, and deps (@discordjs/voice, opus, libsodium, prism-media, davey)
- Backend: delete voice/, recordings/, media/ modules + @discordjs/voice dep
- Backend: cut voice/media/recordings oRPC routers, WS gateway-PCM auth + voice
  handlers, Redis bridge voice aggregation, redis-channels voice/media constants,
  config keys, moderation-types voice items, e2e voice/recordings suites
- Keep voice DB tables (destructive migration avoided); chatbot voiceRecordings
  tool + dashboard count remain as read-only historical data access

services/backend/src/shared/config/index.ts

@@ -33,29 +33,6 @@ export const configSchema = z
       .transform((v) => v.split(",").filter(Boolean))
       .describe("Thread IDs to exclude from capture"),
 
-    // ── Legacy voice ─────────────────────────────────────────────────────
-    VOICE_GUILD_ID: z.string().min(1).optional(),
-    VOICE_CHANNEL_ID: z.string().min(1).optional(),
-
-    // ── Recording ────────────────────────────────────────────────────────
-    RECORDINGS_DIR: z.string().default("./recordings"),
-    RECORDING_SEGMENT_MS: z.coerce.number().positive().default(5000),
-
-    // ── Decoder ──────────────────────────────────────────────────────────
-    DECODER_ROTATE_MS: z.coerce.number().positive().default(5000),
-    DECODER_COOLDOWN_MS: z.coerce.number().positive().default(30000),
-
-    // ── Audio ────────────────────────────────────────────────────────────
-    AUDIO_STREAM_SILENCE_DURATION_MS: z.coerce
-      .number()
-      .positive()
-      .default(3000),
-    PACKET_FILTER_MIN_SIZE: z.coerce.number().positive().default(8),
-    OPUS_FRAME_SIZE: z.coerce.number().positive().default(960),
-    AUDIO_SAMPLE_RATE: z.coerce.number().positive().default(48000),
-    AUDIO_CHANNELS: z.coerce.number().positive().default(2),
-    AVATAR_SIZE: z.coerce.number().positive().default(64),
-
     // ── Server ───────────────────────────────────────────────────────────
     WEBSERVER_PORT: z.coerce.number().positive().default(3001),
     NODE_ENV: z
@@ -92,17 +69,8 @@ export const configSchema = z
 
     // ── Redis ────────────────────────────────────────────────────────────
     REDIS_URL: z.string().default("redis://localhost:6379"),
-    // ── Voice PCM WebSocket (direct gateway→backend, bypasses Redis) ────
-    VOICE_PCM_WS_ENABLED: z
-      .string()
-      .optional()
-      .transform((v) => v === "true")
-      .default(true),
-    BACKEND_WS_URL: z.string().default("ws://backend:3000/ws"),
-    BACKEND_WS_TOKEN: z.string().optional().default(""),
 
     // ── Connection ───────────────────────────────────────────────────────
-    VOICE_CONNECTION_TIMEOUT_MS: z.coerce.number().positive().default(15000),
     RECONNECT_TIMEOUT_MS: z.coerce.number().positive().default(5000),
 
     // ── Attachments ─────────────────────────────────────────────────────
@@ -203,13 +171,6 @@ export const configSchema = z
     PISCINA_MAX_THREADS: z.coerce.number().int().positive().optional(),
     PISCINA_MEDIA_MAX_THREADS: z.coerce.number().int().positive().optional(),
 
-    // ── Voice Transcription ────────────────────────────────────────────────
-    AI_VOICE_TRANSCRIPTION_ENABLED: z
-      .string()
-      .optional()
-      .transform((v) => v === "true")
-      .default(false),
-
     // ── OpenAI Moderation ───────────────────────────────────────────────
     OPENAI_MODERATION_API_KEY: z.string().optional(),
     OPENAI_MODERATION_BASE_URL: z
@@ -252,7 +213,6 @@ export const configSchema = z
     // ── Retention ───────────────────────────────────────────────────────
     RETENTION_MESSAGES_DAYS: z.coerce.number().int().min(0).default(0),
     RETENTION_ATTACHMENTS_DAYS: z.coerce.number().int().min(0).default(0),
-    RETENTION_VOICE_DAYS: z.coerce.number().int().min(0).default(0),
     RETENTION_CLEANUP_INTERVAL_MS: z.coerce
       .number()
       .positive()
@@ -291,7 +251,6 @@ export const configSchema = z
 
 export type AppConfig = z.infer<typeof configSchema> & {
   EFFECTIVE_TEXT_GUILD_ID?: string;
-  EFFECTIVE_VOICE_GUILD_ID?: string;
   EFFECTIVE_MONITOR_GUILD_IDS: string[];
 };
 
@@ -301,7 +260,6 @@ export function loadConfig(env: NodeJS.ProcessEnv = process.env): AppConfig {
     return {
       ...parsed,
       EFFECTIVE_TEXT_GUILD_ID: parsed.TEXT_GUILD_ID ?? parsed.MONITOR_GUILD_ID,
-      EFFECTIVE_VOICE_GUILD_ID: parsed.VOICE_GUILD_ID,
       EFFECTIVE_MONITOR_GUILD_IDS:
         parsed.MONITOR_GUILD_IDS.length > 0
           ? parsed.MONITOR_GUILD_IDS

services/backend/src/shared/moderation-types.ts

@@ -24,9 +24,6 @@ export interface BroadcasterClient {
   messageAnalyzed: (data: unknown) => void;
   attachmentCreated: (data: unknown) => void;
   attachmentUploaded: (data: unknown) => void;
-  voiceRecordingStarted: (data: unknown) => void;
-  voiceRecordingStopped: (data: unknown) => void;
-  voiceRecordingUploaded: (data: unknown) => void;
   analysisQueueStatus: (data: unknown) => void;
 }
 
@@ -102,17 +99,6 @@ export interface AttachmentRecord {
   uploaded_at: number | null;
 }
 
-export interface VoiceSegmentRecord {
-  id: string;
-  user_id: string;
-  session_id: string;
-  guild_id: string;
-  channel_id: string;
-  filename: string;
-  duration_ms: number;
-  created_at: number;
-}
-
 export interface DashboardMessage {
   id: string;
   channel_id: string;
@@ -121,7 +107,7 @@ export interface DashboardMessage {
   avatar_url: string | null;
   content: string;
   created_at: number;
-  type: "text" | "image" | "voice";
+  type: "text" | "image";
 }
 
 export interface MessageQuery {
@@ -154,23 +140,6 @@ export interface AnalysisResult {
   evidence?: string[];
 }
 
-export interface VoiceRecordingUploadData {
-  id: string;
-  user_id: string;
-  username: string;
-  avatar_url: string | null;
-  guild_id: string | null;
-  channel_id: string | null;
-  channel_name: string | null;
-  filename: string;
-  size_bytes: number;
-  download_url: string;
-  upload_status: string;
-  created_at: number;
-  uploaded_at: number;
-  transcription?: string | null;
-}
-
 export interface AnalysisQueueStatus {
   queuedConversations: number;
   activeRequests: number;
@@ -221,7 +190,6 @@ export interface RetentionPolicy {
   channel_id: string | null;
   retention_days: number;
   apply_to_media: boolean;
-  apply_to_voice: boolean;
   enabled: boolean;
   created_at: number;
   updated_at: number;

services/backend/src/shared/redis-channels.ts

@@ -15,11 +15,6 @@ export const DISCORD_MESSAGE_DELETED = "discord:message:deleted";
 export const DISCORD_MESSAGE_ANALYZED = "discord:message:analyzed";
 export const DISCORD_ATTACHMENT_CREATED = "discord:attachment:created";
 export const DISCORD_ATTACHMENT_UPLOADED = "discord:attachment:uploaded";
-export const DISCORD_VOICE_STARTED = "discord:voice:started";
-export const DISCORD_VOICE_STOPPED = "discord:voice:stopped";
-export const DISCORD_VOICE_UPLOADED = "discord:voice:uploaded";
-export const DISCORD_VOICE_ACTIVE_USER = "discord:voice:active_user";
-export const DISCORD_VOICE_PCM = "discord:voice:pcm";
 export const DISCORD_ANALYSIS_QUEUE_STATUS = "discord:analysis:queue_status";
 export const DISCORD_REACTION_ADDED = "discord:reaction:added";
 export const DISCORD_REACTION_REMOVED = "discord:reaction:removed";
@@ -37,35 +32,15 @@ export const DISCORD_MODERATION_ACTION = "discord:moderation:action";
 // ---------------------------------------------------------------------------
 
 export const BACKEND_COMMAND = "backend:command";
-export const BACKEND_VOICE_TRANSMIT = "backend:voice:transmit";
 export const BACKEND_COMMAND_REPLY_PREFIX = "backend:command:reply:";
 
-// ---------------------------------------------------------------------------
-// Status keys (set by discord-gateway, read by backend via Redis GET)
-// ---------------------------------------------------------------------------
-
-export const VOICE_STATUS_KEY = "voice:status";
-export const MEDIA_STATUS_KEY = "media:status";
-
 // ---------------------------------------------------------------------------
 // Command types (used as the `type` field in CommandMessage envelopes)
 // ---------------------------------------------------------------------------
 
-export const COMMAND_VOICE_CONNECT = "voice:connect";
-export const COMMAND_VOICE_DISCONNECT = "voice:disconnect";
-export const COMMAND_VOICE_DISCONNECT_GUILD = "voice:disconnect:guild";
-export const COMMAND_VOICE_CHANNELS = "voice:channels";
-export const COMMAND_VOICE_TRANSMIT_START = "voice:transmit:start";
-export const COMMAND_VOICE_TRANSMIT_STOP = "voice:transmit:stop";
 export const COMMAND_GUILDS_LIST = "guilds:list";
 export const COMMAND_GUILDS_TEXT_CHANNELS = "guilds:text-channels";
-export const COMMAND_MEDIA_QUEUE = "media:queue";
-export const COMMAND_MEDIA_SKIP = "media:skip";
-export const COMMAND_MEDIA_STOP = "media:stop";
-export const COMMAND_MEDIA_VOLUME = "media:volume";
-export const COMMAND_MEDIA_LOOP = "media:loop";
 export const COMMAND_MODERATION_ACTION = "moderation:action";
-export const DISCORD_VOICE_ANALYZED = "discord:voice:analyzed";
 
 // ---------------------------------------------------------------------------
 // Event envelope — used by discord-gateway when publishing to Redis
@@ -111,13 +86,7 @@ export const DISCORD_CHANNEL_TO_WS_EVENT: Record<string, string> = {
   [DISCORD_MESSAGE_ANALYZED]: "message_analyzed",
   [DISCORD_ATTACHMENT_CREATED]: "attachment_created",
   [DISCORD_ATTACHMENT_UPLOADED]: "attachment_uploaded",
-  [DISCORD_VOICE_STARTED]: "voice_recording_started",
-  [DISCORD_VOICE_STOPPED]: "voice_recording_stopped",
-  [DISCORD_VOICE_UPLOADED]: "voice_recording_uploaded",
   [DISCORD_ANALYSIS_QUEUE_STATUS]: "analysis_queue_status",
-  [DISCORD_VOICE_ACTIVE_USER]: "voice_active_user",
-  [DISCORD_VOICE_PCM]: "voice_pcm_data",
-  [DISCORD_VOICE_ANALYZED]: "voice_analyzed",
   [DISCORD_REACTION_ADDED]: "reaction_added",
   [DISCORD_REACTION_REMOVED]: "reaction_removed",
   [DISCORD_THREAD_CREATED]: "thread_created",