diff --git a/.gitignore b/.gitignore
index 37873fb..8df0420 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,13 @@
 .task
 bin/
+tools/
 tests/
 server/
 proxy/
 temp/
 patch/
 .history/
+*.old
 frontend/dist
 frontend/node_modules
 build/bin/
diff --git a/README.md b/README.md
index cdb9166..084e372 100644
--- a/README.md
+++ b/README.md
@@ -114,7 +114,14 @@ flowchart TD
 
 ### 🛠️ วิธีการรันและบิลด์ (Development & Build)
 
-#### 1. ติดตั้ง Dependencies
+#### ⚡ บิลด์และอัปเดตอัตโนมัติในคลิกเดียว (Zero-Dependency One-Click Auto-Update)
+หากคุณหรือผู้ใช้งานไม่มี Go, Node.js, Git หรือ Wails ติดตั้งในเครื่อง สามารถดับเบิลคลิกไฟล์นี้ได้ทันที:
+```cmd
+update-and-build.bat
+```
+> ระบบจะดาวน์โหลด Portable MinGit, Go 1.24, Node.js v22 และ Wails v3 CLI ไว้ในโฟลเดอร์ `tools/` อัตโนมัติ จากนั้นจะ `git pull` โค้ดล่าสุดจากสาขา `Dev` แล้วทำการคอมไพล์ออกมาเป็น `bin/G-Launcher.exe` พร้อมเปิดใช้งานทันที
+
+#### 1. ติดตั้ง Dependencies (สำหรับผู้ที่มี Toolchain ในเครื่องแล้ว)
 ```bash
 # ติดตั้งแพ็กเกจ Frontend
 cd frontend
@@ -190,6 +197,7 @@ G-Launcher/
 ├── proto/                   # Protobuf definitions
 ├── scripts/                 # Release & version calculation scripts (launcher-release.mjs)
 ├── AGENTS.md                # Engineering guidelines & development rules
+├── update-and-build.bat     # Zero-dependency auto-updater & local builder
 ├── build.bat                # Windows build & UPX compression script
 ├── main.go                  # Application entry point & service registration
 └── Taskfile.yml             # Wails build tasks definition
diff --git a/build.bat b/build.bat
index a44dada..2ec9cd3 100644
--- a/build.bat
+++ b/build.bat
@@ -1,29 +1,44 @@
 @echo off
 chcp 65001 >nul
-title 🔧 Wails3 Build & Compress Script
+title 🔧 G-Launcher Build Script
+cd /d "%~dp0"
 
 echo ============================================
-echo 🔧 เริ่มต้น Build โปรเจกต์...
+echo 🔧 เริ่มต้น Build โปรเจกต์ G-Launcher...
 echo ============================================
-start /wait wails3 build
 
-echo.
-echo ============================================
-echo 🔧 กำลังบีบอัดและลบข้อมูล debug...
-echo ============================================
-for %%f in ("build\bin\*.exe") do (
-    echo 🔹 ลดขนาดไฟล์ %%~nxf ...
-    upx --best --lzma "%%f"
+where wails3 >nul 2>nul
+if %errorlevel% neq 0 (
+    echo [INFO] ตรวจไม่พบ Wails3 ในระบบ กำลังเรียกใช้ระบบ Bootstrap อัตโนมัติ...
+    powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0scripts\bootstrap.ps1" -NoLaunch
+    goto done
+)
+
+call wails3 build
+if %errorlevel% neq 0 (
+    echo.
+    echo ❌ Wails3 build ไม่สำเร็จ กำลังสลับไปใช้ระบบ Bootstrap สำรอง...
+    powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0scripts\bootstrap.ps1" -NoLaunch
+    goto done
 )
 
 echo.
 echo ============================================
-echo ✅ เสร็จสิ้นขั้นตอน Build และลดขนาดไฟล์!
+echo 🔧 ตรวจสอบและบีบอัดไฟล์ EXE (UPX)...
 echo ============================================
-pause
+where upx >nul 2>nul
+if %errorlevel% equ 0 (
+    for %%f in ("bin\*.exe" "build\bin\*.exe") do (
+        if exist "%%f" (
+            echo 🔹 บีบอัด %%~nxf ...
+            upx --best --lzma "%%f"
+        )
+    )
+)
 
+:done
 echo.
 echo ============================================
-echo 📦 เริ่ม Package...
+echo ✅ เสร็จสิ้นขั้นตอน Build!
 echo ============================================
-start wails3 package
+pause
diff --git a/scripts/bootstrap.ps1 b/scripts/bootstrap.ps1
new file mode 100644
index 0000000..128f97d
--- /dev/null
+++ b/scripts/bootstrap.ps1
@@ -0,0 +1,201 @@
+# ==============================================================================
+# G-Launcher Auto-Updater & Environment Bootstrap Script
+# ==============================================================================
+param(
+    [string]$Branch = "Dev",
+    [string]$RepoUrl = "https://gaytea.cod-algieba.ts.net/GaCy/G-Launcher.git",
+    [switch]$NoLaunch
+)
+
+$ErrorActionPreference = "Stop"
+[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
+
+$rootDir = Split-Path -Parent $PSScriptRoot
+Set-Location $rootDir
+$toolsDir = Join-Path $rootDir "tools"
+if (!(Test-Path $toolsDir)) { New-Item -ItemType Directory -Path $toolsDir -Force | Out-Null }
+
+Write-Host "==========================================================" -ForegroundColor Cyan
+Write-Host "  G-Launcher: Auto-Update & Local Build System" -ForegroundColor Cyan
+Write-Host "==========================================================" -ForegroundColor Cyan
+Write-Host ""
+
+function Download-And-Extract {
+    param(
+        [string]$Url,
+        [string]$ZipName,
+        [string]$DestinationDir,
+        [string]$Description
+    )
+    Write-Host ">> Downloading $Description..." -ForegroundColor Yellow
+    $zipPath = Join-Path $toolsDir $ZipName
+    
+    if (Get-Command curl.exe -ErrorAction SilentlyContinue) {
+        & curl.exe -L --fail --silent --show-error -o $zipPath $Url
+    } else {
+        (New-Object System.Net.WebClient).DownloadFile($Url, $zipPath)
+    }
+
+    Write-Host ">> Extracting $Description..." -ForegroundColor Yellow
+    if (!(Test-Path $DestinationDir)) { New-Item -ItemType Directory -Path $DestinationDir -Force | Out-Null }
+    
+    Expand-Archive -LiteralPath $zipPath -DestinationPath $DestinationDir -Force
+    Remove-Item -Path $zipPath -Force -ErrorAction SilentlyContinue
+    Write-Host "[OK] $Description installed successfully!" -ForegroundColor Green
+}
+
+# ------------------------------------------------------------------------------
+# 1. Verify Git (or portable MinGit)
+# ------------------------------------------------------------------------------
+Write-Host "[1/6] Checking Git..." -ForegroundColor White
+$gitCmd = Get-Command git -ErrorAction SilentlyContinue
+if (-not $gitCmd) {
+    $minGitPath = Join-Path $toolsDir "mingit\cmd"
+    if (Test-Path (Join-Path $minGitPath "git.exe")) {
+        $env:PATH = "$minGitPath;" + $env:PATH
+    } else {
+        $minGitUrl = "https://github.com/git-for-windows/git/releases/download/v2.48.1.windows.1/MinGit-2.48.1-64-bit.zip"
+        Download-And-Extract -Url $minGitUrl -ZipName "mingit.zip" -DestinationDir (Join-Path $toolsDir "mingit") -Description "Portable Git (MinGit)"
+        $env:PATH = "$minGitPath;" + $env:PATH
+    }
+}
+$gitVersion = (& git --version)
+Write-Host "   -> Found: $gitVersion" -ForegroundColor Gray
+
+# ------------------------------------------------------------------------------
+# 2. Verify Go Compiler (or portable Go)
+# ------------------------------------------------------------------------------
+Write-Host "[2/6] Checking Go Compiler..." -ForegroundColor White
+$goCmd = Get-Command go -ErrorAction SilentlyContinue
+if (-not $goCmd) {
+    $goBinPath = Join-Path $toolsDir "go\bin"
+    if (Test-Path (Join-Path $goBinPath "go.exe")) {
+        $env:PATH = "$goBinPath;" + $env:PATH
+        $env:GOROOT = Join-Path $toolsDir "go"
+    } else {
+        $goUrl = "https://go.dev/dl/go1.24.0.windows-amd64.zip"
+        Download-And-Extract -Url $goUrl -ZipName "go.zip" -DestinationDir $toolsDir -Description "Portable Go 1.24"
+        $env:PATH = "$goBinPath;" + $env:PATH
+        $env:GOROOT = Join-Path $toolsDir "go"
+    }
+}
+$goVersion = (& go version)
+Write-Host "   -> Found: $goVersion" -ForegroundColor Gray
+
+# ------------------------------------------------------------------------------
+# 3. Verify Node.js & npm (or portable Node.js)
+# ------------------------------------------------------------------------------
+Write-Host "[3/6] Checking Node.js & npm..." -ForegroundColor White
+$nodeCmd = Get-Command node -ErrorAction SilentlyContinue
+if (-not $nodeCmd) {
+    $nodePath = Join-Path $toolsDir "node"
+    if (Test-Path (Join-Path $nodePath "node.exe")) {
+        $env:PATH = "$nodePath;" + $env:PATH
+    } else {
+        $nodeUrl = "https://nodejs.org/dist/v22.14.0/node-v22.14.0-win-x64.zip"
+        $tempNodeExtract = Join-Path $toolsDir "node_temp"
+        Download-And-Extract -Url $nodeUrl -ZipName "node.zip" -DestinationDir $tempNodeExtract -Description "Portable Node.js v22"
+        
+        $extractedDir = Get-ChildItem -Path $tempNodeExtract | Where-Object { $_.PSIsContainer } | Select-Object -First 1
+        if ($extractedDir) {
+            Move-Item -Path $extractedDir.FullName -Destination $nodePath -Force
+            Remove-Item -Path $tempNodeExtract -Recurse -Force -ErrorAction SilentlyContinue
+        }
+        $env:PATH = "$nodePath;" + $env:PATH
+    }
+}
+$nodeVersion = (& node -v)
+$npmVersion = (& npm -v)
+Write-Host "   -> Found: Node.js $nodeVersion (npm v$npmVersion)" -ForegroundColor Gray
+
+# ------------------------------------------------------------------------------
+# 4. Verify Wails v3 CLI
+# ------------------------------------------------------------------------------
+Write-Host "[4/6] Checking Wails v3 CLI..." -ForegroundColor White
+$gopath = (& go env GOPATH).Trim()
+$wailsBin = Join-Path $gopath "bin"
+$env:PATH = "$wailsBin;" + $env:PATH
+$wailsCmd = Get-Command wails3 -ErrorAction SilentlyContinue
+if (-not $wailsCmd) {
+    Write-Host ">> Installing Wails v3 CLI..." -ForegroundColor Yellow
+    & go install github.com/wailsapp/wails/v3/cmd/wails3@v3.0.0-alpha.74
+}
+Write-Host "   -> Wails v3 CLI is ready" -ForegroundColor Gray
+
+# ------------------------------------------------------------------------------
+# 5. Git Pull latest code
+# ------------------------------------------------------------------------------
+Write-Host "[5/6] Syncing latest code from branch '$Branch'..." -ForegroundColor White
+$env:GIT_TERMINAL_PROMPT = "0"
+if (Test-Path (Join-Path $rootDir ".git")) {
+    try {
+        & git fetch origin $Branch --progress
+        & git checkout $Branch
+        $pullOutput = & git pull origin $Branch
+        Write-Host "   -> $pullOutput" -ForegroundColor Gray
+    } catch {
+        Write-Host "Warning: Could not pull latest changes (offline or local modifications). Proceeding with current local code." -ForegroundColor DarkYellow
+    }
+} else {
+    Write-Host ">> Cloning repository from $RepoUrl..." -ForegroundColor Yellow
+    & git clone --branch $Branch $RepoUrl .
+}
+
+# ------------------------------------------------------------------------------
+# 6. Build Project (Frontend + Go Backend)
+# ------------------------------------------------------------------------------
+Write-Host "[6/6] Compiling G-Launcher..." -ForegroundColor White
+
+Write-Host "   [6.1] Installing Frontend dependencies..." -ForegroundColor Gray
+& npm --prefix frontend install --no-audit --no-fund
+
+Write-Host "   [6.2] Building React 19 Frontend..." -ForegroundColor Gray
+& npm --prefix frontend run build
+
+Write-Host "   [6.3] Running go mod tidy..." -ForegroundColor Gray
+& go mod tidy
+
+$binDir = Join-Path $rootDir "bin"
+if (!(Test-Path $binDir)) { New-Item -ItemType Directory -Path $binDir -Force | Out-Null }
+$outputExe = Join-Path $binDir "G-Launcher.exe"
+$sysoPath = Join-Path $rootDir "wails_windows_amd64.syso"
+
+try {
+    Write-Host "   [6.4] Generating Windows Manifest & Syso..." -ForegroundColor Gray
+    if (Get-Command wails3 -ErrorAction SilentlyContinue) {
+        & wails3 generate syso -arch amd64 -icon build/windows/icon.ico -manifest build/windows/wails.exe.manifest -info build/windows/info.json -out $sysoPath
+    }
+} catch {
+    Write-Host "Warning: Syso generation skipped, building executable without embedded syso." -ForegroundColor DarkYellow
+}
+
+Write-Host "   [6.5] Compiling Go backend binary..." -ForegroundColor Gray
+& go build -tags production -trimpath -buildvcs=false -ldflags="-w -s -H windowsgui" -o $outputExe .
+
+if (Test-Path $sysoPath) {
+    Remove-Item -Path $sysoPath -Force -ErrorAction SilentlyContinue
+}
+
+if ($LASTEXITCODE -ne 0 -or !(Test-Path $outputExe)) {
+    Write-Host ""
+    Write-Host "[ERROR] Compilation failed!" -ForegroundColor Red
+    exit 1
+}
+
+$upxCmd = Get-Command upx -ErrorAction SilentlyContinue
+if ($upxCmd) {
+    Write-Host "   [6.6] Compressing binary with UPX..." -ForegroundColor Gray
+    & upx --best --lzma $outputExe
+}
+
+$exeSize = (Get-Item $outputExe).Length / 1MB
+Write-Host ""
+Write-Host "==========================================================" -ForegroundColor Green
+Write-Host ("Build Successful! Output: bin/G-Launcher.exe ({0:N2} MB)" -f $exeSize) -ForegroundColor Green
+Write-Host "==========================================================" -ForegroundColor Green
+Write-Host ""
+
+if (-not $NoLaunch) {
+    Write-Host "Launching G-Launcher..." -ForegroundColor Cyan
+    Start-Process -FilePath $outputExe
+}
\ No newline at end of file
diff --git a/update-and-build.bat b/update-and-build.bat
new file mode 100644
index 0000000..da4d296
--- /dev/null
+++ b/update-and-build.bat
@@ -0,0 +1,21 @@
+@echo off
+chcp 65001 >nul
+title 🚀 G-Launcher Auto-Updater & Local Builder
+cd /d "%~dp0"
+
+echo ==========================================================
+echo   🚀 เริ่มต้นระบบอัปเดตและคอมไพล์ G-Launcher
+echo ==========================================================
+echo.
+
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0scripts\bootstrap.ps1" %*
+if errorlevel 1 (
+    echo.
+    echo ❌ มีข้อผิดพลาดเกิดขึ้นระหว่างการทำงาน!
+    pause
+    exit /b 1
+)
+
+echo.
+echo กดปุ่มใดก็ได้เพื่อปิดหน้าต่างนี้...
+pause >nul