fix: handle missing ffmpeg on windows and add devices alias

src/audio/local-voice-session.ts

@@ -5,11 +5,11 @@ import os from "node:os";
 import path from "node:path";
 import type { Readable, Writable } from "node:stream";
 
-import ffmpegStatic from "ffmpeg-static";
 import { RealTimeVAD } from "avr-vad";
 
 import type { AssistantRuntimeConfig } from "../config.js";
 import { Logger } from "../logger.js";
+import { requireFfmpegPath } from "./ffmpeg-path.js";
 import { takeFrame, int16ArrayToFloat32, float32ToPcm16Buffer } from "./pcm.js";
 import { ConversationMemory, type UserUtterance } from "../services/conversation.js";
 import { ElevenLabsSttService } from "../services/elevenlabs-stt.js";
@@ -460,11 +460,7 @@ export class LocalVoiceSession {
   }
 
   private getFfmpegPath(): string {
-    const ffmpegPath = ffmpegStatic as unknown as string | null;
-    if (!ffmpegPath) {
-      throw new Error("ffmpeg-static 경로를 찾지 못했습니다.");
-    }
-    return ffmpegPath;
+    return requireFfmpegPath();
   }
 
   private describeSink(): string {