fix(ts-config,proxybridge,voicebox): align voicebox config types and add missing proxy bridge command definitions

ts/config.ts

@@ -8,6 +8,7 @@
 
 import fs from 'node:fs';
 import path from 'node:path';
+import type { IVoiceboxConfig } from './voicebox.js';
 
 // ---------------------------------------------------------------------------
 // Shared types (previously in ts/sip/types.ts, now inlined)
@@ -160,24 +161,13 @@ export interface IContact {
 // Voicebox configuration
 // ---------------------------------------------------------------------------
 
-export interface IVoiceboxConfig {
-  /** Unique ID — typically matches device ID or extension. */
-  id: string;
-  /** Whether this voicebox is active. */
-  enabled: boolean;
-  /** Custom TTS greeting text. */
-  greetingText?: string;
-  /** TTS voice ID (default 'af_bella'). */
-  greetingVoice?: string;
-  /** Path to uploaded WAV greeting (overrides TTS). */
-  greetingWavPath?: string;
-  /** Seconds to wait before routing to voicemail (default 25). */
-  noAnswerTimeoutSec?: number;
-  /** Maximum recording duration in seconds (default 120). */
-  maxRecordingSec?: number;
-  /** Maximum stored messages per box (default 50). */
-  maxMessages?: number;
-}
+// Canonical definition lives in voicebox.ts (imported at the top of this
+// file) — re-exported here so consumers can import everything from a
+// single config module without pulling in the voicebox implementation.
+// This used to be a duplicated interface and caused
+// "number | undefined is not assignable to number" type errors when
+// passing config.voiceboxes into VoiceboxManager.init().
+export type { IVoiceboxConfig };
 
 // ---------------------------------------------------------------------------
 // IVR configuration