chore: 更新项目配置和依赖，优化前后端代码

backend/main.py

@@ -1,4 +1,4 @@
-import asyncio
+import asyncio
 import base64
 import json
 import logging
@@ -238,7 +238,7 @@ async def ocr_image(request: OCRRequest, api_key: str = Security(get_api_key)):
         )
         image_bytes = base64.b64decode(request.image)
         logger.info("[%s] /v1/ocr decoded image_bytes=%d", request_id, len(image_bytes))
-        result = await call_vlm_ocr(image_bytes, request.language)
+        result = await call_vlm_ocr(image_bytes, request.language)  
         logger.info(
             "[%s] /v1/ocr success text_chars=%d text_preview='%s'",
             request_id,
@@ -253,7 +253,7 @@ async def ocr_image(request: OCRRequest, api_key: str = Security(get_api_key)):
 
 @app.post("/v1/convert")
 async def convert_to_markdown(request: ConvertRequest, api_key: str = Security(get_api_key)):
-    """将文件转换为Markdown格式"""
+    """鐏忓棙鏋冩禒鎯版祮閹诡澀璐烳arkdown閺嶇厧绱?""
     request_id = str(uuid.uuid4())[:8]
     
     try:
@@ -264,20 +264,20 @@ async def convert_to_markdown(request: ConvertRequest, api_key: str = Security(g
             len(request.file or ""),
         )
         
-        # 解码Base64文件内容
+        # 鐟欙絿鐖淏ase64閺傚洣娆㈤崘鍛啇
         file_bytes = base64.b64decode(request.file)
         logger.info("[%s] /v1/convert decoded file_bytes=%d", request_id, len(file_bytes))
         
-        # 获取文件扩展名
+        # 閼惧嘲褰囬弬鍥︽閹碘晛鐫嶉崥?
         ext = os.path.splitext(request.filename)[1].lower()
         
-        # 创建临时文件
+        # 閸掓稑缂撴稉瀛樻閺傚洣娆?
         with tempfile.NamedTemporaryFile(delete=False, suffix=ext) as tmp:
             tmp.write(file_bytes)
             tmp_path = tmp.name
         
         try:
-            # 使用MarkItDown转换为Markdown
+            # 娴ｈ法鏁arkItDown鏉烆剚宕叉稉绡梐rkdown
             md = markitdown.MarkItDown()
             result = md.convert(tmp_path)
             markdown_text = result.text_content
@@ -294,7 +294,7 @@ async def convert_to_markdown(request: ConvertRequest, api_key: str = Security(g
                 "filename": request.filename
             }
         finally:
-            # 清理临时文件
+            # 濞撳懐鎮婃稉瀛樻閺傚洣娆?
             if os.path.exists(tmp_path):
                 os.unlink(tmp_path)
                 
@@ -307,3 +307,9 @@ if __name__ == "__main__":
     import uvicorn
 
     uvicorn.run(app, host="0.0.0.0", port=8001)
+
+
+# TTS and STT routes
+from tts_asr import register_tts_asr_routes
+register_tts_asr_routes(app)
+