Enhance ElevenLabs API error logging for better debugging

- Add detailed logging for ElevenLabs API status, response, URL, and headers
- Preserve original HTTPException details in error propagation
- Add full traceback logging for better error diagnosis
- This will help identify the exact ElevenLabs API issue

app.py

@@ -86,6 +86,10 @@ class ElevenLabsClient:
                 async with session.post(url, headers=headers, json=data) as response:
                     if response.status != 200:
                         error_text = await response.text()
+                        logger.error(f"ElevenLabs API Error - Status: {response.status}")
+                        logger.error(f"ElevenLabs API Error - Response: {error_text}")
+                        logger.error(f"ElevenLabs API Error - URL: {url}")
+                        logger.error(f"ElevenLabs API Error - Headers: {headers}")
                         raise HTTPException(
                             status_code=400, 
                             detail=f"ElevenLabs API error: {response.status} - {error_text}"
@@ -492,3 +496,4 @@ if __name__ == "__main__":
     import uvicorn
     uvicorn.run(app, host="0.0.0.0", port=7860)
 
+