fix(dashboard): prevent superseded dashboard loads from mutating state (#301)

Adds two loadSeq guards in _loadDashboardDataInner: after the first await coreP and before the self-heal writeOpenclawConfig path. Prevents stale loads from polluting cache, popping toasts, or writing config after a newer load has been queued.

src/pages/dashboard.js

@@ -219,7 +219,7 @@ function normalizeDefaultModelConfig(config) {
 }
 
 async function loadDashboardData(page, fullRefresh = false) {
-  // 并发保护：如果上一次加载仍在进行，跳过本次（fullRefresh 除外）
+  // 将多次触发串行化到同一链上；_dashboardLoadSeq 在排队时就会递增，供 inner 丢弃过期结果
   const loadSeq = ++_dashboardLoadSeq
   _dashboardLoadChain = _dashboardLoadChain.catch(() => {}).then(() => _loadDashboardDataInner(page, fullRefresh, loadSeq))
   return _dashboardLoadChain
@@ -246,6 +246,8 @@ async function _loadDashboardDataInner(page, fullRefresh, loadSeq) {
 
   // 第一波：服务状态 + 配置 + 版本 → 立即渲染统计卡片
   const [servicesRes, configRes, panelConfigRes] = await coreP
+  // 排队期间可能已发起更新的加载：勿用淘汰中的结果改缓存、弹 toast 或写配置（避免与较新加载竞态）
+  if (loadSeq !== _dashboardLoadSeq || !page.isConnected) return
   const services = servicesRes.status === 'fulfilled' ? servicesRes.value : []
   let version = _dashboardVersionCache || {}
   let config = configRes.status === 'fulfilled' ? configRes.value : null
@@ -273,6 +275,7 @@ async function _loadDashboardDataInner(page, fullRefresh, loadSeq) {
     if (needsPatch) {
       try {
         const freshConfig = await api.readOpenclawConfig()
+        if (loadSeq !== _dashboardLoadSeq || !page.isConnected) return
         let patched = false
         if (!freshConfig.gateway) freshConfig.gateway = {}
         if (!freshConfig.gateway.mode) { freshConfig.gateway.mode = 'local'; patched = true }