Update server/routers/cicd.py

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: getworken

server/routers/cicd.py

@@ -201,6 +201,9 @@ async def list_workflows(project_name: str):
     if not project_dir:
         raise HTTPException(status_code=404, detail="Project not found")
 
+    if not project_dir.exists():
+        raise HTTPException(status_code=404, detail="Project directory not found")
+
     workflows_dir = project_dir / ".github" / "workflows"
     if not workflows_dir.exists():
         return WorkflowListResponse(workflows=[], count=0)