From 439eb175924a622c6fe08381a6c6b5f2ad56f0aa Mon Sep 17 00:00:00 2001
From: tingfei <1228959039@qq.com>
Date: Thu, 9 Apr 2026 15:34:35 +0800
Subject: [PATCH] fix(speech): use correct file extension for default output
 filename

When --format is specified without --out, the default output filename
always used .mp3 regardless of the requested format. For example,
--format wav would produce speech_xxx.mp3 containing WAV audio data,
causing tools that rely on file extensions to misidentify the format.

Fix: derive the extension from --format flag (defaulting to mp3).

Note: music/generate.ts already handles this correctly.
---
 src/commands/speech/synthesize.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/commands/speech/synthesize.ts b/src/commands/speech/synthesize.ts
index 5ad788e..3a80cde 100644
--- a/src/commands/speech/synthesize.ts
+++ b/src/commands/speech/synthesize.ts
@@ -56,7 +56,8 @@ export default defineCommand({
     const model = (flags.model as string) || 'speech-2.8-hd';
     const voice = (flags.voice as string) || 'English_expressive_narrator';
     const ts = new Date().toISOString().slice(0, 19).replace(/[T:]/g, '-');
-    const outPath = (flags.out as string | undefined) ?? `speech_${ts}.mp3`;
+    const ext = (flags.format as string) || 'mp3';
+    const outPath = (flags.out as string | undefined) ?? `speech_${ts}.${ext}`;
     const outFormat = 'hex';
     const format = detectOutputFormat(config.output);