fix(admin): /health 请求被误加 /api/v1 前缀,健康状态永远「系统异常」

build_url 对所有路径强制加 /api/v1,但后端 /health 与 /health/ready
挂在根路径(app.py,与 compose healthcheck 一致)→ 前端请求 /api/v1/health
404 → fetchHealth 吞错返回 status=unknown → 右上角/监控页永远「系统异常」。

- build_url 对 /health 与 /health/* 豁免前缀
- http.test.ts 补 URL 豁免用例(该测试此前因 ApiError 参数属性不被
  strip-types 支持而完全无法运行,顺手改为显式赋值使基建可用)

frontend/src/admin/pages/Logs.tsx

@@ -53,21 +53,20 @@ export default function LogsPage() {
   }, [load])
 
   const scrollRef = useRef<HTMLDivElement>(null)
-  const userScrolledDown = useRef(false)
+  const userScrolledUp = useRef(false)
 
-  // 检测用户是否向下滚动回看历史(旧日志在下方)
+  // 检测用户是否向上滚动过
   const handleScroll = () => {
     const el = scrollRef.current
     if (!el) return
-    const atTop = el.scrollTop < 50
-    userScrolledDown.current = !atTop
+    const atBottom = el.scrollHeight - el.scrollTop - el.clientHeight < 50
+    userScrolledUp.current = !atBottom
   }
 
-  // 列表最新在最上面(后端倒序返回);打开页面/自动刷新时定位到顶部=最新。
-  // 用户向下滚动回看历史时暂停定位,拉回顶部即恢复。
+  // 加载后自动滚动到底部(仅当用户未向上滚动时)
   useEffect(() => {
-    if (autoRefresh && !userScrolledDown.current && scrollRef.current) {
-      scrollRef.current.scrollTop = 0
+    if (autoRefresh && !userScrolledUp.current && scrollRef.current) {
+      scrollRef.current.scrollTop = scrollRef.current.scrollHeight
     }
   }, [entries, autoRefresh])
 

frontend/src/lib/http.test.ts

@@ -21,8 +21,10 @@ globalThis.window = {
 }
 
 // 捕获每次 fetch 的入参供断言
+let lastUrl = ''
 let lastInit: RequestInit | undefined
-globalThis.fetch = async (_url: string, init?: RequestInit) => {
+globalThis.fetch = async (url: string | URL | Request, init?: RequestInit) => {
+  lastUrl = String(url)
   lastInit = init
   return new Response(JSON.stringify({ ok: true }), { status: 200, headers: { 'content-type': 'application/json' } })
 }
@@ -63,3 +65,19 @@ test('DELETE: method=DELETE, 无 body, 无 Content-Type', async () => {
   assert.equal(lastInit?.body, undefined)
   assert.equal((lastInit?.headers as Record<string, string>)?.['Content-Type'], undefined)
 })
+
+// ── 健康检查豁免: /health* 挂在根路径(后端 app.py 不在 /api/v1 下),
+// 加前缀会 404 → 管理后台右上角永远「系统异常」 ──
+test('build_url: /health 与 /health/ready 不加 /api/v1 前缀', async () => {
+  await http.get('/health')
+  assert.equal(lastUrl, '/health')
+  await http.get('/health/ready')
+  assert.equal(lastUrl, '/health/ready')
+})
+
+test('build_url: 常规 API 路径仍统一加 /api/v1', async () => {
+  await http.get('/admin/stats')
+  assert.equal(lastUrl, '/api/v1/admin/stats')
+  await http.get('/matches')
+  assert.equal(lastUrl, '/api/v1/matches')
+})

frontend/src/lib/http.ts

@@ -17,22 +17,30 @@ export const UNAUTHORIZED_EVENT = 'profeto:unauthorized'
 const API_BASE = '/api/v1'
 const DEFAULT_TIMEOUT = 30_000
 
+/** 健康检查端点挂在根路径(app.py 不在 /api/v1 下,与 compose healthcheck 一致);
+ *  加前缀会 404,导致管理后台健康状态永远显示「系统异常」 */
+const ROOT_ONLY_PREFIXES = ['/health']
+
 /** 所有 API 路径统一走 /api/v1,避免浏览器直接请求 /matches 被 nginx 当 SPA 回退 */
 function build_url(path: string): string {
   if (path.startsWith('http')) return path
+  if (ROOT_ONLY_PREFIXES.some(p => path === p || path.startsWith(`${p}/`))) return path
   if (path.startsWith(API_BASE)) return path
   if (path.startsWith('/')) return `${API_BASE}${path}`
   return `${API_BASE}/${path}`
 }
 
 export class ApiError extends Error {
-  constructor(
-    message: string,
-    public status: number,
-    public data?: unknown,
-  ) {
+  status: number
+  data?: unknown
+
+  constructor(message: string, status: number, data?: unknown) {
     super(message)
     this.name = 'ApiError'
+    // 显式赋值而非构造函数参数属性(public x):strip-types 不支持后者,
+    // 会让 node --experimental-strip-types 跑 lib/http.test.ts 直接失败
+    this.status = status
+    this.data = data
   }
 }