fix(sites): 观众健康检查误报未登录,健康失败原因细分(HC-1)

观众 2026 版首页没有 <a href=logout>:退出按钮在 userbar 的 data-uploader-actions JSON
里由脚本渲染,旧登录标志 a[href*="logout"] 永远不命中,健康检查报"未登录"而用户数据正常。

- audiences 定义 loginSuccess 改为 #info_block / usercp.php / logout 任一(0.2.1)
- 健康检查判定细分:登录页 / 权限页 / 疑似人机验证 / 找不到登录标志(带选择器),
  原始判定写入 last_health.detail,站点概览技术信息展示
- 首页只是找不到登录标志时,以 24 小时内用户数据解析成功为已登录证据(同 MP)
- 新 SiteError 类 challenge(cf-mitigated: challenge),不算凭据错误;健康状态 challenge
- testkit mock 增加 setHeaderLayout;加观众首页脱敏结构样本的差分测试

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/server/src/modules/sources-identity/service/account.ts

@@ -5,6 +5,7 @@ import {
   type MteamDefinition,
   mteamApiBase,
   refreshSiteUserData,
+  type SiteHealthDetail,
   SiteLoginError,
   type SiteLoginFailure,
   type SiteUserInfo,
@@ -789,8 +790,12 @@ const HEALTH_OF: Record<string, SiteHealth> = {
   unreachable: "degraded",
   site_maintenance: "degraded",
   parse_error: "degraded",
+  challenge: "degraded",
 };
 
+/** 用户数据多久内解析成功可以当作"已登录"的证据(与 MP 一致:user_info 解析成功即判登录) */
+const USER_DATA_EVIDENCE_MS = 24 * 3_600_000;
+
 /** 首页连通 + 登录态(≤ 20 s,走站点限流);写 site.last_health* 与 health_status(已关闭的站点保持 disabled) */
 export async function checkSiteHealth(
   rt: SourcesRuntime,
@@ -802,6 +807,7 @@ export async function checkSiteHealth(
   let status = "unreachable";
   let latencyMs: number | null = null;
   let message: string | null = null;
+  let detail: SiteHealthDetail | null = null;
   const def = getSiteDefinition(site.key);
   if (!def) {
     message = "站点没有适配器定义，无法检测";
@@ -813,6 +819,30 @@ export async function checkSiteHealth(
     status = h.status;
     latencyMs = h.latencyMs;
     message = h.message ?? null;
+    detail = h.detail ?? null;
+    // 首页不是登录页、只是没找到登录标志:以用户数据解析成功为准(避免与"测试登录"两处判定打架)
+    if (!ok && detail?.reason === "marker_missing") {
+      const acc = await rt.ctx.db
+        .selectFrom("site_account")
+        .select(["id", "user_data_at"])
+        .where("site_id", "=", site.id)
+        .where("enabled", "=", true)
+        .where("status", "=", "active")
+        .where("user_data_at", ">=", new Date(now.getTime() - USER_DATA_EVIDENCE_MS))
+        .orderBy("user_data_at", "desc")
+        .executeTakeFirst();
+      if (acc?.user_data_at) {
+        ok = true;
+        status = "ok";
+        message = null;
+        detail = {
+          ...detail,
+          reason: "user_data",
+          homepage: "marker_missing",
+          userDataAt: acc.user_data_at.toISOString(),
+        };
+      }
+    }
   }
   const loggedIn = ok ? true : status.startsWith("auth_") ? false : null;
   const healthStatus: SiteHealth = !site.enabled
@@ -820,7 +850,7 @@ export async function checkSiteHealth(
     : def
       ? (HEALTH_OF[status] ?? "degraded")
       : site.health_status;
-  const last = { ok, status, latencyMs, message };
+  const last = { ok, status, latencyMs, message, detail };
   await rt.ctx.db.transaction().execute(async (trx) => {
     await trx
       .updateTable("site")