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/discord-gateway/src/modules/message-capture/index.ts

@@ -9,7 +9,6 @@ export type {
   AIStatus,
   AttachmentRecord,
   MessageRecord,
-  VoiceSegmentRecord,
 } from "../message-capture/types.js";
 export type { TextCaptureTarget } from "./messageCapture.js";
 export {

services/discord-gateway/src/modules/message-capture/types.ts

@@ -1,11 +1,8 @@
-import type fs from "node:fs";
-import type prism from "prism-media";
 import type {
   AnalysisQueueStatus,
   AttachmentRecord,
   MessageRecord,
   UserMetadata,
-  VoiceRecordingUploadData,
 } from "../../shared/index.js";
 
 // Re-export all shared types for backward compatibility
@@ -29,41 +26,8 @@ export type {
   ReviewStatus,
   RoleMetadata,
   UserMetadata,
-  VoiceRecordingUploadData,
-  VoiceSegmentRecord,
 } from "../../shared/index.js";
 
-// Types that are LOCAL ONLY (not in shared) — keep here
-export interface SegmentState {
-  index: number;
-  startTime: number;
-  endTime: number | null;
-  filename: string;
-  jsonFilename: string;
-  oggStream: prism.opus.OggLogicalBitstream;
-  out: fs.WriteStream;
-}
-
-export interface SegmentMetadata extends UserMetadata {
-  recordingSessionId: string;
-  sessionId: string;
-  sessionStartTime: number;
-  segmentIndex: number;
-  segmentMs: number;
-  startTime: number;
-  endTime: number;
-  durationMs: number;
-  filename: string;
-}
-
-export interface PcmBroadcaster {
-  broadcastPcmToWeb?: (chunk: Buffer, userId: string) => void;
-  updateActiveUser?: (
-    userId: string,
-    data: { username: string; avatar: string; speaking: boolean },
-  ) => void;
-}
-
 // Local-only types (not shared across services)
 export type ModerationWsEvent =
   | { type: "ui_state"; state: unknown }
@@ -73,6 +37,4 @@ export type ModerationWsEvent =
   | { type: "message_deleted"; data: { id: string; deleted_at: number } }
   | { type: "message_analyzed"; data: MessageRecord }
   | { type: "attachment_created"; data: AttachmentRecord }
-  | { type: "analysis_queue_status"; data: AnalysisQueueStatus }
-  | { type: "media_state"; state: unknown }
-  | { type: "voice_recording_uploaded"; data: VoiceRecordingUploadData };
+  | { type: "analysis_queue_status"; data: AnalysisQueueStatus };