feat: 新增 /run 接口，在 go-judge 沙箱中编译运行 C/C++

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

schemas.py

@@ -1,5 +1,5 @@
 from pydantic import BaseModel
-from typing import List, Dict, Any
+from typing import List, Dict, Any, Literal
 
 
 class PresetCodeCreate(BaseModel):
@@ -30,6 +30,7 @@ class AIAnalysisRequest(BaseModel):
 
 class DebugRequest(BaseModel):
     """调试请求模式，用于调试 Python 代码"""
+
     code: str
     inputs: List[str]
 
@@ -45,3 +46,18 @@ class FormatResponse(BaseModel):
     """格式化代码的响应模式"""
 
     code: str
+
+
+class RunRequest(BaseModel):
+    """运行 C/C++ 代码的请求模式"""
+
+    code: str
+    language: Literal["c", "cpp"]
+    stdin: str = ""
+
+
+class RunResponse(BaseModel):
+    """运行结果，status 沿用 Judge0 的状态码：3 成功、6 编译错误、11 运行错误"""
+
+    status: int
+    output: str