fix: 修复 endpoints 模块导入路径

- progress.py: get_db, get_current_user 从 app.core.deps 导入
- speech.py: 同上
- recommendation.py: 同上

backend/app/api/v1/endpoints/speech.py

@@ -5,8 +5,7 @@ from typing import Optional
 from fastapi import APIRouter, Depends, File, UploadFile, Form, HTTPException
 from pydantic import BaseModel
 
-from app.core.database import get_db
-from app.api.deps import get_current_user
+from app.core.deps import get_db, get_current_user
 from app.models.user import User
 from app.services.speech_recognition import (
     get_speech_recognition_service,