From 7cfdd402ca72fddd18315169440e4f847f7c9212 Mon Sep 17 00:00:00 2001
From: Deroino <117969239+Deroino@users.noreply.github.com>
Date: Mon, 24 Nov 2025 08:45:50 +0800
Subject: [PATCH] =?UTF-8?q?fix(ui):=20=E4=BF=AE=E5=A4=8D=E7=A9=BA=E5=8C=85?=
 =?UTF-8?q?=E4=BD=93=E8=AF=B7=E6=B1=82=E6=90=BA=E5=B8=A6=E9=94=99=E8=AF=AF?=
 =?UTF-8?q?=E7=9A=84=20Content-Type=20=E5=A4=B4=E5=AF=BC=E8=87=B4=E7=9A=84?=
 =?UTF-8?q?=E6=8E=A5=E5=8F=A3=E6=8A=A5=E9=94=99?=
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之前 apiFetch 无脑调用 createHeaders()，导致 DELETE 等无包体请求也被强制加上了 Content-Type: application/json。
Fastify 服务端在收到此头时会尝试解析 Body，面对空 Body 直接抛出 FST_ERR_CTP_EMPTY_JSON_BODY 错误。

修改后：仅在 options.body 存在时才添加 JSON Content-Type 头。
---
 ui/src/lib/api.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ui/src/lib/api.ts b/ui/src/lib/api.ts
index b98e7874..d221ec91 100644
--- a/ui/src/lib/api.ts
+++ b/ui/src/lib/api.ts
@@ -75,10 +75,13 @@ class ApiClient {
   private async apiFetch<T>(endpoint: string, options: RequestInit = {}): Promise<T> {
     const url = `${this.baseUrl}${endpoint}`;
     
+    // Only set Content-Type if there is a body
+    const contentType = options.body ? 'application/json' : '';
+    
     const config: RequestInit = {
       ...options,
       headers: {
-        ...this.createHeaders(),
+        ...this.createHeaders(contentType),
         ...options.headers,
       },
     };