[bug] 流程运行过程中报错Service temporarily unavailable

[EmmaHou-Forward]

Before you start

• I searched existing issues and this is not a duplicate.
• I can reproduce this on the latest main.

Problem summary

windows wsl中make dev启动，流程执行过程中后端自动重启，重启后又继续流程

Affected area(s)

Backend API (gateway / endpoints / SSE), Frontend (UI / Next.js), Agents / LangGraph (graph, prompts, langgraph.json)

What happened?

windows wsl中make dev启动，流程执行过程中后端自动重启，重启后又继续流程

Expected behavior

希望流程执行过程中后端不要重启

Steps to reproduce

1. make dev启动
2. 前端打开新对话提问，流程较长，约10min
3. 前端页面显示Service temporarily unavailable，过一会儿才能重新打开

Relevant logs

nginx-error.log
2026/06/05 15:26:53 [error] 15564#15564: *613 upstream timed out (110: Connection timed out) while reading response header from upstream, client: ::1, server: _, request: "GET /api/v1/auth/me HTTP/1.1", upstream: "http://127.0.0.1:8001/api/v1/auth/me", host: "localhost:2026", referrer: "http://localhost:2026/workspace/chats/e68783c4-c20f-43f7-a8c9-d0ddcefe7435"

gateway.log(问题时间点没有异常日志)
2026-06-05 15:25:18 - httpx - INFO - HTTP Request: POST https://XXXXX/chat/completions "HTTP/1.1 200 OK"
2026-06-05 15:27:03 - deerflow.runtime.journal - INFO - LLM response: run_id=f3e122f8-aba9-43da-ba90-def639a176ac

How are you running DeerFlow?

Local (make dev)

Operating system

Windows

Platform details

No response

Python version

No response

Node.js version

Node.js 24.14.1

pnpm version

No response

uv version

uv 0.11.6

Git state

No response

Additional context

No response