diff --git a/.memory/worklog.json b/.memory/worklog.json
index bf0aac4..42db785 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -1,19 +1,5 @@
 {
   "entries": [
-    {
-      "files_changed": 1,
-      "hash": "e54f2e4",
-      "message": "auto-save 2026-05-07 17:03 (~1)",
-      "ts": "2026-05-07T17:05:12+08:00",
-      "type": "commit"
-    },
-    {
-      "files_changed": 1,
-      "hash": "e383abf",
-      "message": "auto-save 2026-05-07 17:10 (~1)",
-      "ts": "2026-05-07T17:10:43+08:00",
-      "type": "commit"
-    },
     {
       "files_changed": 1,
       "hash": "3680fbd",
@@ -3465,6 +3451,19 @@
       "type": "session-heartbeat",
       "message": "Codex 会话活跃 · 最近命令：codex · 分支 master · 2 项未提交变更 · 最近提交：auto-save 2026-05-09 18:25 (~1)",
       "files_changed": 2
+    },
+    {
+      "ts": "2026-05-09T18:31:12+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-09 18:31 (~2)",
+      "hash": "7d90784",
+      "files_changed": 2
+    },
+    {
+      "ts": "2026-05-09T10:35:53Z",
+      "type": "session-heartbeat",
+      "message": "Codex 会话活跃 · 最近命令：codex · 分支 master · 3 项未提交变更 · 最近提交：auto-save 2026-05-09 18:31 (~2)",
+      "files_changed": 3
     }
   ]
 }
diff --git a/src/app.js b/src/app.js
index 77678a1..cc26238 100644
--- a/src/app.js
+++ b/src/app.js
@@ -9,6 +9,7 @@ const LS_THEME = "hermes-ui-theme-v1";
 const LS_AGENTS = "hermes-ui-agents-v1";
 const LS_CUSTOM_SKILLS = "hermes-ui-custom-skills-v1";
 const LS_FLOWS = "hermes-ui-flows-v1";
+const LS_TAB = "hermes-ui-active-tab-v1";
 
 const state = {
   apiBase: "/api/v1",
@@ -61,6 +62,7 @@ document.addEventListener("DOMContentLoaded", () => {
   renderSidebar();
   renderChat();
   renderAgents();
+  restoreActiveTab();
   pingBackend();
   fetchIP();
   setInterval(pingBackend, 30000);
@@ -329,10 +331,18 @@ function bindTabs() {
     btn.addEventListener("click", () => switchTab(btn.dataset.tab));
   });
 }
+function restoreActiveTab() {
+  const saved = localStorage.getItem(LS_TAB);
+  if (!saved) return;
+  if (!document.querySelector(`.side-item[data-tab="${CSS.escape(saved)}"]`)) return;
+  if (!document.getElementById("tab-" + saved)) return;
+  switchTab(saved, { persist: false });
+}
 let _dashboardDirty = true;
 function markDashboardDirty() { _dashboardDirty = true; }
 
-function switchTab(name) {
+function switchTab(name, options = {}) {
+  if (options.persist !== false) localStorage.setItem(LS_TAB, name);
   document.querySelectorAll(".side-item").forEach(t => t.classList.toggle("active", t.dataset.tab === name));
   document.querySelectorAll(".tab-panel").forEach(p => p.classList.toggle("active", p.id === "tab-" + name));
   if (name === "chat") setTimeout(() => document.getElementById("chatInput")?.focus(), 50);
diff --git a/src/sw.js b/src/sw.js
index ce061bb..8c4c715 100644
--- a/src/sw.js
+++ b/src/sw.js
@@ -1,6 +1,6 @@
 // 爱马仕 Hermes · 轻量 Service Worker
 // 静态壳走 network-first（拿不到再回退缓存），API 直通
-const CACHE = "hermes-ui-v11";
+const CACHE = "hermes-ui-v12";
 const ASSETS = [
   "./",
   "./index.html",