feat(sandbox): add Node.js code execution support to sandbox

sandbox/app/controllers/health_controller.py

@@ -9,4 +9,4 @@ router = APIRouter()
 @router.get("/health", response_model=HealthResponse)
 async def health_check():
     """Health check endpoint"""
-    return HealthResponse(status="healthy", version="2.0.0")
+    return HealthResponse(status="healthy", version="0.1.0")

sandbox/app/controllers/sandbox_controller.py

@@ -2,13 +2,15 @@
 from fastapi import APIRouter, Depends
 
 from app.middleware.auth import verify_api_key
-from app.middleware.concurrency import check_max_requests, acquire_worker
+from app.middleware.concurrency import concurrency_guard
+
 from app.models import (
     RunCodeRequest,
     ApiResponse,
     UpdateDependencyRequest,
     error_response
 )
+from app.services.nodejs_service import run_nodejs_code
 from app.services.python_service import (
     run_python_code,
     list_python_dependencies,
@@ -25,16 +27,14 @@ router = APIRouter(
 @router.post(
     "/run",
     response_model=ApiResponse,
-    dependencies=[Depends(check_max_requests),
-                  Depends(acquire_worker)]
+    dependencies=[Depends(concurrency_guard)]
 )
 async def run_code(request: RunCodeRequest):
     """Execute code in sandbox"""
     if request.language == "python3":
         return await run_python_code(request.code, request.preload, request.options)
     elif request.language == "nodejs":
-        # TODO
-        return error_response(-400, "TODO")
+        return await run_nodejs_code(request.code, request.preload, request.options)
     else:
         return error_response(-400, "unsupported language")
 
@@ -55,5 +55,3 @@ async def update_dependencies(request: UpdateDependencyRequest):
         return await update_python_dependencies()
     else:
         return error_response(-400, "unsupported language")
-
-