refactor: 将 check_hf_token 函数移到更合理的位置

将 check_hf_token 函数从文件末尾移到全局变量声明之后，使其位置更符合代码逻辑结构

app.py

@@ -16,6 +16,7 @@ import hashlib
 import logging
 from PIL.ExifTags import TAGS
 from gradio_client import Client, handle_file
+import requests
 
 # 设置日志
 logging.basicConfig(level=logging.INFO)
@@ -27,6 +28,22 @@ MAP_PATH = "char_map.json"
 hf_token = os.getenv("read_token")
 
 
+def check_hf_token(token):
+    headers = {"Authorization": f"Bearer {token}"}
+    # 访问 HF 的身份验证接口
+    response = requests.get("https://huggingface.co/api/whoami-v2", headers=headers)
+
+    if response.status_code == 200:
+        user_info = response.json()
+        logger.info(f"✅ Token 有效！")
+        logger.info(f"👤 用户名: {user_info.get('name')}")
+        logger.info(f"🔑 权限类型: {user_info.get('auth', {}).get('type', 'N/A')}")
+    else:
+        logger.error(f"❌ Token 无效或已过期。")
+        logger.error(f"🚫 错误代码: {response.status_code}")
+        logger.error(f"📄 返回信息: {response.text}")
+
+
 # --- 全局初始化模型（启动时加载一次） ---
 class Recognizer:
     def __init__(self, model_path: str = MODEL_PATH, map_path: str = MAP_PATH):
@@ -228,22 +245,6 @@ except Exception as e:
     recognizer = None
 
 
-def check_hf_token(token):
-    headers = {"Authorization": f"Bearer {token}"}
-    # 访问 HF 的身份验证接口
-    response = requests.get("https://huggingface.co/api/whoami-v2", headers=headers)
-
-    if response.status_code == 200:
-        user_info = response.json()
-        logger.info(f"✅ Token 有效！")
-        logger.info(f"👤 用户名: {user_info.get('name')}")
-        logger.info(f"🔑 权限类型: {user_info.get('auth', {}).get('type', 'N/A')}")
-    else:
-        logger.error(f"❌ Token 无效或已过期。")
-        logger.error(f"🚫 错误代码: {response.status_code}")
-        logger.error(f"📄 返回信息: {response.text}")
-
-
 # --- API 路由 ---
 @app.post("/upload", response_model=List[Dict[str, str]])
 async def upload_image(request: Request, file: UploadFile = File(...)):