diff --git a/README.md b/README.md
index 90aedbd..6126183 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Fastest way to try PageAgent with our free Demo LLM:
 
 ```html
 <script
-    src="https://cdn.jsdelivr.net/npm/page-agent@1.11.0/dist/iife/page-agent.demo.js"
+    src="https://cdn.jsdelivr.net/npm/page-agent@1.12.0/dist/iife/page-agent.demo.js"
     crossorigin="anonymous"
 ></script>
 ```
@@ -65,8 +65,8 @@ Fastest way to try PageAgent with our free Demo LLM:
 
 | Mirrors | URL                                                                                 |
 | ------- | ----------------------------------------------------------------------------------- |
-| Global  | https://cdn.jsdelivr.net/npm/page-agent@1.11.0/dist/iife/page-agent.demo.js         |
-| China   | https://registry.npmmirror.com/page-agent/1.11.0/files/dist/iife/page-agent.demo.js |
+| Global  | https://cdn.jsdelivr.net/npm/page-agent@1.12.0/dist/iife/page-agent.demo.js         |
+| China   | https://registry.npmmirror.com/page-agent/1.12.0/files/dist/iife/page-agent.demo.js |
 
 Add `?autoInit=false` to load the script without creating the demo agent automatically. You can then instantiate it with `new window.PageAgent(...)`.
 
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 3ff5ff5..8c8adca 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.12.0] - 2026-07-09
+
+- **Stateless extension tab sync** - TabsController pulls tab state on demand instead of long-lived ports, so the MV3 service worker stays stateless and survives idle kills without stalling the side panel.
+- **Tab status in agent context** - Tab summaries now include each tab's loading status for the LLM.
+
 ## [1.11.0] - 2026-07-03
 
 ### Features
diff --git a/docs/README-zh.md b/docs/README-zh.md
index 7be4335..f85e59c 100644
--- a/docs/README-zh.md
+++ b/docs/README-zh.md
@@ -55,7 +55,7 @@
 
 ```html
 <script
-    src="https://cdn.jsdelivr.net/npm/page-agent@1.11.0/dist/iife/page-agent.demo.js"
+    src="https://cdn.jsdelivr.net/npm/page-agent@1.12.0/dist/iife/page-agent.demo.js"
     crossorigin="anonymous"
 ></script>
 ```
@@ -64,8 +64,8 @@
 
 | Mirrors | URL                                                                                 |
 | ------- | ----------------------------------------------------------------------------------- |
-| Global  | https://cdn.jsdelivr.net/npm/page-agent@1.11.0/dist/iife/page-agent.demo.js         |
-| China   | https://registry.npmmirror.com/page-agent/1.11.0/files/dist/iife/page-agent.demo.js |
+| Global  | https://cdn.jsdelivr.net/npm/page-agent@1.12.0/dist/iife/page-agent.demo.js         |
+| China   | https://registry.npmmirror.com/page-agent/1.12.0/files/dist/iife/page-agent.demo.js |
 
 在 URL 后添加 `?autoInit=false` 可只加载脚本，不自动创建 Demo Agent；之后可通过 `new window.PageAgent(...)` 手动初始化。
 
diff --git a/package-lock.json b/package-lock.json
index 0fe1d37..a9732d8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "root",
-    "version": "1.11.0",
+    "version": "1.12.0",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "root",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "workspaces": [
                 "packages/page-controller",
@@ -11414,11 +11414,11 @@
         },
         "packages/core": {
             "name": "@page-agent/core",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "dependencies": {
-                "@page-agent/llms": "1.11.0",
-                "@page-agent/page-controller": "1.11.0",
+                "@page-agent/llms": "1.12.0",
+                "@page-agent/page-controller": "1.12.0",
                 "chalk": "^5.6.2"
             },
             "devDependencies": {
@@ -11430,13 +11430,13 @@
         },
         "packages/extension": {
             "name": "@page-agent/ext",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "hasInstallScript": true,
             "dependencies": {
-                "@page-agent/core": "1.11.0",
-                "@page-agent/llms": "1.11.0",
-                "@page-agent/page-controller": "1.11.0",
-                "@page-agent/ui": "1.11.0",
+                "@page-agent/core": "1.12.0",
+                "@page-agent/llms": "1.12.0",
+                "@page-agent/page-controller": "1.12.0",
+                "@page-agent/ui": "1.12.0",
                 "ai-motion": "^0.4.8",
                 "chalk": "^5.6.2"
             },
@@ -11474,7 +11474,7 @@
         },
         "packages/llms": {
             "name": "@page-agent/llms",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "dependencies": {
                 "chalk": "^5.6.2"
@@ -11488,7 +11488,7 @@
         },
         "packages/mcp": {
             "name": "@page-agent/mcp",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "dependencies": {
                 "@modelcontextprotocol/sdk": "^1.29.0",
@@ -11503,13 +11503,13 @@
             }
         },
         "packages/page-agent": {
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "dependencies": {
-                "@page-agent/core": "1.11.0",
-                "@page-agent/llms": "1.11.0",
-                "@page-agent/page-controller": "1.11.0",
-                "@page-agent/ui": "1.11.0",
+                "@page-agent/core": "1.12.0",
+                "@page-agent/llms": "1.12.0",
+                "@page-agent/page-controller": "1.12.0",
+                "@page-agent/ui": "1.12.0",
                 "chalk": "^5.6.2"
             },
             "devDependencies": {
@@ -11521,7 +11521,7 @@
         },
         "packages/page-controller": {
             "name": "@page-agent/page-controller",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT",
             "dependencies": {
                 "ai-motion": "^0.4.8"
@@ -11529,12 +11529,12 @@
         },
         "packages/ui": {
             "name": "@page-agent/ui",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "license": "MIT"
         },
         "packages/website": {
             "name": "@page-agent/website",
-            "version": "1.11.0",
+            "version": "1.12.0",
             "devDependencies": {
                 "@radix-ui/react-icons": "^1.3.2",
                 "@radix-ui/react-separator": "^1.1.11",
diff --git a/package.json b/package.json
index f82333e..3c1b661 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "root",
     "private": true,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "workspaces": [
         "packages/page-controller",
diff --git a/packages/core/package.json b/packages/core/package.json
index 6c62988..e510e05 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@page-agent/core",
     "private": false,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "main": "./src/PageAgentCore.ts",
     "types": "./src/PageAgentCore.ts",
@@ -55,8 +55,8 @@
     },
     "dependencies": {
         "chalk": "^5.6.2",
-        "@page-agent/llms": "1.11.0",
-        "@page-agent/page-controller": "1.11.0"
+        "@page-agent/llms": "1.12.0",
+        "@page-agent/page-controller": "1.12.0"
     },
     "peerDependencies": {
         "zod": "^3.25.0 || ^4.0.0"
diff --git a/packages/extension/package.json b/packages/extension/package.json
index b89561f..7463b10 100644
--- a/packages/extension/package.json
+++ b/packages/extension/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@page-agent/ext",
     "private": true,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "scripts": {
         "dev": "wxt",
@@ -38,10 +38,10 @@
         "wxt": "^0.20.27"
     },
     "dependencies": {
-        "@page-agent/core": "1.11.0",
-        "@page-agent/llms": "1.11.0",
-        "@page-agent/page-controller": "1.11.0",
-        "@page-agent/ui": "1.11.0",
+        "@page-agent/core": "1.12.0",
+        "@page-agent/llms": "1.12.0",
+        "@page-agent/page-controller": "1.12.0",
+        "@page-agent/ui": "1.12.0",
         "ai-motion": "^0.4.8",
         "chalk": "^5.6.2"
     },
diff --git a/packages/llms/package.json b/packages/llms/package.json
index d042255..76c1a78 100644
--- a/packages/llms/package.json
+++ b/packages/llms/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@page-agent/llms",
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "main": "./src/index.ts",
     "types": "./src/index.ts",
diff --git a/packages/mcp/package.json b/packages/mcp/package.json
index cde17c9..5bcb807 100644
--- a/packages/mcp/package.json
+++ b/packages/mcp/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@page-agent/mcp",
     "private": false,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "bin": {
         "page-agent-mcp": "src/index.js"
diff --git a/packages/page-agent/package.json b/packages/page-agent/package.json
index eb06df2..b2a1d94 100644
--- a/packages/page-agent/package.json
+++ b/packages/page-agent/package.json
@@ -1,7 +1,7 @@
 {
     "name": "page-agent",
     "private": false,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "main": "./src/PageAgent.ts",
     "types": "./src/PageAgent.ts",
@@ -54,10 +54,10 @@
         "postpublish": "node ../../scripts/post-publish.js"
     },
     "dependencies": {
-        "@page-agent/core": "1.11.0",
-        "@page-agent/llms": "1.11.0",
-        "@page-agent/page-controller": "1.11.0",
-        "@page-agent/ui": "1.11.0",
+        "@page-agent/core": "1.12.0",
+        "@page-agent/llms": "1.12.0",
+        "@page-agent/page-controller": "1.12.0",
+        "@page-agent/ui": "1.12.0",
         "chalk": "^5.6.2"
     },
     "peerDependencies": {
diff --git a/packages/page-controller/package.json b/packages/page-controller/package.json
index 938b3d3..660af9a 100644
--- a/packages/page-controller/package.json
+++ b/packages/page-controller/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@page-agent/page-controller",
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "main": "./src/PageController.ts",
     "types": "./src/PageController.ts",
diff --git a/packages/ui/package.json b/packages/ui/package.json
index fff80a6..556a599 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@page-agent/ui",
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "main": "./src/index.ts",
     "types": "./src/index.ts",
diff --git a/packages/website/package.json b/packages/website/package.json
index 49c5506..01517b8 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@page-agent/website",
     "private": true,
-    "version": "1.11.0",
+    "version": "1.12.0",
     "type": "module",
     "scripts": {
         "dev": "vite --host 0.0.0.0",
diff --git a/packages/website/src/constants.ts b/packages/website/src/constants.ts
index 672bd62..f7fd6ac 100644
--- a/packages/website/src/constants.ts
+++ b/packages/website/src/constants.ts
@@ -1,8 +1,8 @@
 // Demo build (auto-init with demo LLM, for quick testing)
 export const CDN_DEMO_URL =
-	'https://cdn.jsdelivr.net/npm/page-agent@1.11.0/dist/iife/page-agent.demo.js'
+	'https://cdn.jsdelivr.net/npm/page-agent@1.12.0/dist/iife/page-agent.demo.js'
 export const CDN_DEMO_CN_URL =
-	'https://registry.npmmirror.com/page-agent/1.11.0/files/dist/iife/page-agent.demo.js'
+	'https://registry.npmmirror.com/page-agent/1.12.0/files/dist/iife/page-agent.demo.js'
 
 // Demo LLM for website testing (homepage quick trial uses flash)
 export const DEMO_MODEL = 'qwen3.5-flash'