fix: 修复装饰器 Request 参数与端点 body 参数名冲突

- 使用 inspect.signature 保留原函数签名并在前面追加 http_request: Request
  参数，使 FastAPI 能同时注入 Request 对象和原有的 body 参数
- 将装饰器内部的 request 引用全部改为 http_request，避免与端点函数的
  request: SessionCreateRequest 等 body 参数冲突

main.py

@@ -3,6 +3,7 @@
 Hermes Service with global session management and Nginx security support
 """
 
+import inspect
 import os
 import sys
 import asyncio
@@ -164,12 +165,21 @@ def get_real_ip(request: Request) -> str:
 def validate_ip_and_apikey():
     """Decorator to validate IP and API key for protected endpoints"""
     def decorator(func):
+        # Preserve original function signature + prepend http_request: Request
+        # so FastAPI can inject both the Request and the original parameters.
+        original_sig = inspect.signature(func)
+        http_request_param = inspect.Parameter(
+            'http_request', inspect.Parameter.POSITIONAL_OR_KEYWORD, annotation=Request
+        )
+        new_params = [http_request_param] + list(original_sig.parameters.values())
+        new_sig = original_sig.replace(parameters=new_params)
+
         @wraps(func)
-        async def wrapper(request: Request, *args, **kwargs):
+        async def wrapper(http_request: Request, *args, **kwargs):
             # IP validation
             if config['security']['enable_ip_check']:
-                client_ip = get_real_ip(request)
-                print(f"DEBUG: Client IP: {client_ip}")  # Debug log
+                client_ip = get_real_ip(http_request)
+                print(f"DEBUG: Client IP: {client_ip}")
                 allowed = False
                 for allowed_ip in config['security']['allowed_ips']:
                     try:
@@ -177,7 +187,6 @@ def validate_ip_and_apikey():
                             allowed = True
                             break
                     except ValueError:
-                        # Invalid IP or network, skip
                         continue
 
                 if not allowed:
@@ -188,14 +197,12 @@ def validate_ip_and_apikey():
                 provided_key = None
 
                 if config['security']['auth_method'] == 'bearer':
-                    # Check Authorization header for Bearer token
-                    auth_header = request.headers.get("authorization")
+                    auth_header = http_request.headers.get("authorization")
                     if auth_header and auth_header.lower().startswith("bearer "):
-                        provided_key = auth_header[7:].strip()  # Remove "Bearer " prefix
+                        provided_key = auth_header[7:].strip()
                 else:
-                    # Check custom header (default: X-API-Key)
                     api_key_header = config['security']['api_key_header']
-                    provided_key = request.headers.get(api_key_header)
+                    provided_key = http_request.headers.get(api_key_header)
 
                 if not provided_key:
                     raise HTTPException(status_code=401, detail="API key required")
@@ -203,9 +210,7 @@ def validate_ip_and_apikey():
                 valid_key = False
                 for key_config in config['security']['api_keys']:
                     if key_config['key'] == provided_key:
-                        # Check expiration if set
                         if 'expires_at' in key_config and key_config['expires_at']:
-                            # TODO: Implement expiration check
                             pass
                         valid_key = True
                         break
@@ -214,6 +219,8 @@ def validate_ip_and_apikey():
                     raise HTTPException(status_code=401, detail="Invalid API key")
 
             return await func(*args, **kwargs)
+
+        wrapper.__signature__ = new_sig
         return wrapper
     return decorator