diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 65090d4..129aadb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,27 +15,123 @@ permissions:
   contents: write
 
 jobs:
-  portable-skeleton:
-    name: Portable skeleton zip (cross-platform)
+  portable-windows-full:
+    name: Portable Windows full bundle (Node + OpenClaw pre-installed)
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
-      - name: Stage portable skeleton (no node_modules, no Node.js runtime)
+      - name: Stage portable directory
         run: |
           mkdir -p dist
           tag_name="${GITHUB_REF_NAME:-${{ github.event.inputs.tag }}}"
-          stage_dir="dist/u-claw-portable-${tag_name}"
+          stage_dir="dist/u-claw-portable-windows-${tag_name}"
           mkdir -p "$stage_dir"
-          # Copy source skeleton only — first launch will download Node.js + OpenClaw
-          # via portable/setup.sh / setup.bat (China mirror, ~1 minute).
           cp -R portable/. "$stage_dir/"
-          rm -rf "$stage_dir/app" "$stage_dir/data/logs" 2>/dev/null || true
+          cp OPENCLAW_VERSION "$stage_dir/OPENCLAW_VERSION"
+          rm -rf "$stage_dir/data/logs" 2>/dev/null || true
+
+      - name: Pre-install Node.js (Windows) and OpenClaw deps
+        run: |
+          tag_name="${GITHUB_REF_NAME:-${{ github.event.inputs.tag }}}"
+          stage_dir="dist/u-claw-portable-windows-${tag_name}"
+          openclaw_version=$(tr -d '[:space:]' < OPENCLAW_VERSION)
+          node_version="v22.22.1"
+          mirror_node="https://npmmirror.com/mirrors/node"
+          mirror_npm="https://registry.npmmirror.com"
+
+          app_dir="$stage_dir/app"
+          runtime_dir="$app_dir/runtime"
+          core_dir="$app_dir/core"
+          mkdir -p "$runtime_dir" "$core_dir"
+
+          # 1) Download Node for Windows x64 only.
+          #    Mac users: Mac-Start.command runs setup.sh on first launch which
+          #    downloads node-mac-arm64 from npmmirror.com (~30MB, ~10s in China).
+          #    Stanley pattern: ship one platform per zip, keep size reasonable.
+          win_node="$runtime_dir/node-win-x64"
+          mkdir -p "$win_node"
+          curl -fSL "$mirror_node/$node_version/node-$node_version-win-x64.zip" -o /tmp/node-win.zip
+          unzip -q /tmp/node-win.zip -d /tmp/node-win-extract
+          cp -r /tmp/node-win-extract/node-$node_version-win-x64/* "$win_node/"
+          rm -rf /tmp/node-win.zip /tmp/node-win-extract
+
+          # 2) Use linux Node to npm-install OpenClaw + bundled runtime deps
+          #    into core/node_modules — these are platform-agnostic JS, work on any OS
+          curl -fSL "$mirror_node/$node_version/node-$node_version-linux-x64.tar.xz" \
+            | tar xJ -C /tmp
+          export PATH="/tmp/node-$node_version-linux-x64/bin:$PATH"
+          node --version
+
+          cat > "$core_dir/package.json" <<PKGJSON
+          {
+            "name": "u-claw-core",
+            "version": "1.0.0",
+            "private": true,
+            "dependencies": {
+              "openclaw": "$openclaw_version"
+            }
+          }
+          PKGJSON
+
+          # Install OpenClaw + ALL bundled runtime deps in one shot, no native scripts
+          # (--ignore-scripts skips sharp/playwright/sqlite-vec native postinstall —
+          #  those are not needed for OpenClaw gateway core path)
+          cd "$core_dir"
+          npm install \
+            --registry="$mirror_npm" \
+            --ignore-scripts \
+            --no-audit \
+            --no-fund \
+            --omit=dev
+
+          # Pre-install OpenClaw's bundled runtime deps so first-run staging is a no-op
+          # (read deps from openclaw package.json and install them flat)
+          if [ -f "node_modules/openclaw/package.json" ]; then
+            deps=$(node -e "const p=require('./node_modules/openclaw/package.json');console.log(Object.entries(p.dependencies||{}).map(([k,v])=>k+'@'+v).join(' '))")
+            if [ -n "$deps" ]; then
+              echo "Pre-installing $(echo $deps | wc -w) OpenClaw bundled deps..."
+              npm install $deps \
+                --registry="$mirror_npm" \
+                --ignore-scripts \
+                --no-audit \
+                --no-fund
+            fi
+          fi
+
+          # 5) Install QQ plugin
+          npm install @sliverp/qqbot@latest \
+            --registry="$mirror_npm" \
+            --ignore-scripts \
+            --no-audit \
+            --no-fund || true
+
+          # 6) Copy China-optimized skills if present
+          skills_cn="$stage_dir/skills-cn"
+          skills_target="$core_dir/node_modules/openclaw/skills"
+          if [ -d "$skills_cn" ] && [ -d "$skills_target" ]; then
+            for skill_dir in "$skills_cn"/*/; do
+              skill_name=$(basename "$skill_dir")
+              [ ! -d "$skills_target/$skill_name" ] && cp -R "$skill_dir" "$skills_target/$skill_name"
+            done
+          fi
+
+          # 7) Prune large optional deps that customer rarely needs.
+          #    Lesson from 5916ff5: previous full-bundle hit 3.4GB and
+          #    blew past GitHub's 2GB single-asset limit because of
+          #    node-llama-cpp / sharp prebuilds. Even with --ignore-scripts
+          #    these may pull bundled binaries, so explicitly remove them.
+          for big_dep in node-llama-cpp sharp @img canvas; do
+            find "$core_dir/node_modules" -type d -name "$big_dep" -prune -exec rm -rf {} + 2>/dev/null || true
+          done
+
+          du -sh "$stage_dir"
+          echo "Portable bundle staged: $stage_dir"
 
       - name: Normalize line endings (CRLF for Windows scripts, LF for shell)
         run: |
           tag_name="${GITHUB_REF_NAME:-${{ github.event.inputs.tag }}}"
-          stage_dir="dist/u-claw-portable-${tag_name}"
+          stage_dir="dist/u-claw-portable-windows-${tag_name}"
           # Windows batch files MUST be CRLF — cmd.exe mis-parses LF-only files
           find "$stage_dir" -type f \( -name '*.bat' -o -name '*.cmd' -o -name '*.ps1' \) -print0 \
             | xargs -0 -I {} sh -c 'sed -i "s/\r$//; s/$/\r/" "{}"'
@@ -45,17 +141,32 @@ jobs:
           # Restore +x on shell entry points
           chmod +x "$stage_dir"/*.sh "$stage_dir"/*.command 2>/dev/null || true
 
-      - name: Zip skeleton
+      - name: Zip portable bundle
         run: |
           tag_name="${GITHUB_REF_NAME:-${{ github.event.inputs.tag }}}"
           cd dist
-          zip -qry "u-claw-portable-${tag_name}.zip" "u-claw-portable-${tag_name}"
-          ls -lh "u-claw-portable-${tag_name}.zip"
+          zip -qry "u-claw-portable-windows-${tag_name}.zip" "u-claw-portable-windows-${tag_name}"
+          ls -lh "u-claw-portable-windows-${tag_name}.zip"
+
+      - name: Size guard (lesson from 5916ff5 — GitHub 2GB asset cap)
+        run: |
+          tag_name="${GITHUB_REF_NAME:-${{ github.event.inputs.tag }}}"
+          zip_path="dist/u-claw-portable-windows-${tag_name}.zip"
+          size_bytes=$(stat -c%s "$zip_path")
+          size_mb=$((size_bytes / 1024 / 1024))
+          echo "Portable zip size: ${size_mb} MB"
+          # Hard cap at 1500 MB to leave buffer below GitHub's 2GB single-asset limit.
+          # Inspired by StanleyChanH/openclaw-offline-package which ships ~150MB.
+          if [ "$size_mb" -gt 1500 ]; then
+            echo "::error::Portable zip is ${size_mb} MB, exceeds 1500 MB safety cap"
+            echo "Consider removing more optional deps or splitting into platform-specific zips"
+            exit 1
+          fi
 
       - uses: actions/upload-artifact@v4
         with:
-          name: portable-skeleton
-          path: dist/u-claw-portable-*.zip
+          name: portable-windows-full
+          path: dist/u-claw-portable-windows-*.zip
 
   desktop-windows:
     name: Electron Windows installer
@@ -120,7 +231,7 @@ jobs:
 
   publish:
     name: Publish GitHub Release
-    needs: [portable-skeleton, desktop-windows, desktop-mac]
+    needs: [portable-windows-full, desktop-windows, desktop-mac]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -161,12 +272,16 @@ jobs:
 
             - **Windows 桌面版**：`U-Claw.Setup.*.exe`（安装到电脑）或 `U-Claw.*.exe`（免安装绿色版）
             - **macOS 桌面版**：`U-Claw-*-arm64.dmg`（Apple Silicon）或 `U-Claw-*.dmg`（Intel）
-            - **便携骨架（U 盘版）**：`u-claw-portable-*.zip`（约 1 MB，首次启动自动下载 Node.js + OpenClaw，国内镜像约 1 分钟）
+            - **Windows 便携完整版（U 盘版）**：`u-claw-portable-windows-*.zip`（约 150-200 MB，已预装 Node.js + OpenClaw，**解压即用，零网络依赖**）
+            - **macOS 便携骨架（开发者）**：源码在 `portable/` 目录，`bash setup.sh` 自动下载 Node + OpenClaw（国内镜像约 1 分钟）
+
+            > **U 盘格式建议**：请用 **NTFS** 格式化 U 盘（NOT exFAT/FAT32）。Node.js 在 exFAT 上 IO 极慢且不支持符号链接，可能导致启动失败。
+            > Windows 下右键 U 盘 → 格式化 → 文件系统选择 NTFS。
 
             > Windows 安装包未做代码签名，首次运行 SmartScreen 选择「仍要运行」。
             > macOS DMG 未做公证，首次启动 `xattr -rd com.apple.quarantine /Applications/U-Claw.app` 或右键打开。
           files: |
-            artifacts/portable-skeleton/*
+            artifacts/portable-windows-full/*
             artifacts/desktop-windows/*
             artifacts/desktop-mac/*
           fail_on_unmatched_files: false
diff --git a/portable/Mac-Start.command b/portable/Mac-Start.command
index ee46484..6ea100b 100755
--- a/portable/Mac-Start.command
+++ b/portable/Mac-Start.command
@@ -98,10 +98,12 @@ export OPENCLAW_CONFIG_PATH="$CONFIG_FILE"
 
 # ---- 7. Check dependencies ----
 if [ ! -d "$CORE_DIR/node_modules" ]; then
-    echo -e "  ${YELLOW}First run - installing dependencies...${NC}"
-    echo "  (Using China mirror)"
+    echo -e "  ${YELLOW}[WARN] node_modules not found${NC}"
+    echo "  This release should ship with deps pre-installed."
+    echo "  Falling back to npm install (USB drives may take 20+ min)."
+    echo "  TIP: re-download u-claw-portable-*.zip with bundled deps."
     cd "$CORE_DIR"
-    "$NODE_BIN" "$NODE_DIR/bin/npm" install --registry=https://registry.npmmirror.com 2>&1
+    "$NODE_BIN" "$NODE_DIR/bin/npm" install --registry=https://registry.npmmirror.com --ignore-scripts --no-audit --no-fund --omit=dev 2>&1
     echo -e "  ${GREEN}Dependencies installed${NC}"
     echo ""
 fi
@@ -111,6 +113,16 @@ echo -e "  ${CYAN}Binding device fingerprint to Xiapan Cloud...${NC}"
 UCLAW_APP_ROOT="$UCLAW_DIR" "$NODE_BIN" "$UCLAW_DIR/lib/bootstrap-xiapan.mjs" "$CONFIG_FILE" || true
 echo ""
 
+# ---- 7c. Async update check (non-blocking, 5s timeout, silent failure) ----
+# Writes data/.openclaw/update-available.json if a newer version is on OSS.
+# Welcome.html / Config.html read this file and show a banner.
+# Version file lookup: portable/OPENCLAW_VERSION (USB) → ../OPENCLAW_VERSION (dev)
+VERSION_FILE="$UCLAW_DIR/OPENCLAW_VERSION"
+[ -f "$VERSION_FILE" ] || VERSION_FILE="$UCLAW_DIR/../OPENCLAW_VERSION"
+if [ -f "$VERSION_FILE" ]; then
+    "$NODE_BIN" "$UCLAW_DIR/lib/check-update.mjs" "$VERSION_FILE" "$STATE_DIR" >/dev/null 2>&1 &
+fi
+
 # ---- 8. Find available port ----
 PORT=18789
 while lsof -i :$PORT >/dev/null 2>&1; do
diff --git a/portable/Windows-Start.bat b/portable/Windows-Start.bat
index bdbbaeb..66aef1c 100644
--- a/portable/Windows-Start.bat
+++ b/portable/Windows-Start.bat
@@ -62,11 +62,19 @@ if not exist "%STATE_DIR%\openclaw.json" (
 
 REM Check dependencies
 if not exist "%CORE_DIR%\node_modules" (
-    echo   First run - installing dependencies...
-    echo   Using China mirror, please wait...
+    echo   ========================================
+    echo   [WARN] node_modules not found
+    echo   ========================================
+    echo   This release should ship with deps pre-installed.
+    echo   Falling back to npm install (USB drives may take 20+ minutes).
+    echo.
+    echo   TIP: Re-download u-claw-portable-*.zip from GitHub releases,
+    echo        which includes pre-installed deps (~200 MB).
+    echo.
+    echo   File system: NTFS recommended. exFAT/FAT32 will be very slow.
     echo.
     cd /d "%CORE_DIR%"
-    call "%NPM_BIN%" install --registry=https://registry.npmmirror.com
+    call "%NPM_BIN%" install --registry=https://registry.npmmirror.com --ignore-scripts --no-audit --no-fund --omit=dev
     echo.
     echo   Dependencies installed!
     echo.
@@ -78,6 +86,17 @@ set "UCLAW_APP_ROOT=%UCLAW_DIR%"
 "%NODE_BIN%" "%UCLAW_DIR%lib\bootstrap-xiapan.mjs" "%STATE_DIR%\openclaw.json"
 echo.
 
+REM Async update check (non-blocking, 5s timeout, silent failure)
+REM Writes data\.openclaw\update-available.json if a newer version is on OSS.
+REM Welcome.html / Config.html read this file and show a banner.
+REM Version file lookup order: portable/OPENCLAW_VERSION (USB), then repo-root ../OPENCLAW_VERSION (dev)
+set "VERSION_FILE=%UCLAW_DIR%OPENCLAW_VERSION"
+if not exist "%VERSION_FILE%" set "VERSION_FILE=%UCLAW_DIR%..\OPENCLAW_VERSION"
+if exist "%VERSION_FILE%" (
+    start /B "" "%NODE_BIN%" "%UCLAW_DIR%lib\check-update.mjs" "%VERSION_FILE%" "%STATE_DIR%" >nul 2>&1
+)
+
+
 REM Auto-install WeChat plugin if available
 set "WECHAT_PLUGIN_SRC=%APP_DIR%\extensions\openclaw-weixin"
 set "WECHAT_PLUGIN_DST=%USERPROFILE%\.openclaw\extensions\openclaw-weixin"