diff --git a/edge-ai-platform/scripts/build-installer.ps1 b/edge-ai-platform/scripts/build-installer.ps1
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+++ b/edge-ai-platform/scripts/build-installer.ps1
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+# Edge AI Platform - Windows Installer Build Script
+# Usage: powershell -ExecutionPolicy Bypass -File scripts\build-installer.ps1
+#
+# Prerequisites: Go 1.23+, Node.js 20+, pnpm, Wails CLI
+# Run from edge-ai-platform/ directory
+
+$ErrorActionPreference = "Stop"
+$baseDir = Split-Path -Parent (Split-Path -Parent $MyInvocation.MyCommand.Path)
+$repoRoot = Split-Path -Parent $baseDir
+
+Set-Location $baseDir
+Write-Host "=== Edge AI Platform - Windows Installer Build ===" -ForegroundColor Cyan
+Write-Host "Working directory: $baseDir"
+Write-Host ""
+
+# Check prerequisites
+Write-Host "[1/5] Checking prerequisites..." -ForegroundColor Yellow
+$missing = @()
+if (-not (Get-Command go -ErrorAction SilentlyContinue)) { $missing += "Go (https://go.dev/dl/)" }
+if (-not (Get-Command node -ErrorAction SilentlyContinue)) { $missing += "Node.js (https://nodejs.org/)" }
+if (-not (Get-Command pnpm -ErrorAction SilentlyContinue)) { $missing += "pnpm (npm install -g pnpm)" }
+if (-not (Get-Command wails -ErrorAction SilentlyContinue)) { $missing += "Wails (go install github.com/wailsapp/wails/v2/cmd/wails@latest)" }
+
+if ($missing.Count -gt 0) {
+    Write-Host "Missing prerequisites:" -ForegroundColor Red
+    foreach ($m in $missing) { Write-Host "  - $m" -ForegroundColor Red }
+    exit 1
+}
+
+Write-Host "  Go:    $(go version)" -ForegroundColor Green
+Write-Host "  Node:  $(node --version)" -ForegroundColor Green
+Write-Host "  pnpm:  $(pnpm --version)" -ForegroundColor Green
+Write-Host "  Wails: $(wails version 2>&1 | Select-String 'v')" -ForegroundColor Green
+Write-Host ""
+
+# Build frontend
+Write-Host "[2/5] Building frontend..." -ForegroundColor Yellow
+Set-Location frontend
+pnpm install --frozen-lockfile
+if ($LASTEXITCODE -ne 0) { Write-Host "pnpm install failed" -ForegroundColor Red; exit 1 }
+pnpm build
+if ($LASTEXITCODE -ne 0) { Write-Host "pnpm build failed" -ForegroundColor Red; exit 1 }
+if (Test-Path ..\server\web\out) { Remove-Item -Recurse -Force ..\server\web\out }
+xcopy /E /I /Y out ..\server\web\out | Out-Null
+Set-Location $baseDir
+Write-Host "  Frontend built." -ForegroundColor Green
+Write-Host ""
+
+# Build server
+Write-Host "[3/5] Building server..." -ForegroundColor Yellow
+Set-Location server
+$env:CGO_ENABLED = "0"
+go build -tags notray -ldflags="-s -w" -o ..\dist\edge-ai-server.exe main.go
+if ($LASTEXITCODE -ne 0) { Write-Host "Server build failed" -ForegroundColor Red; exit 1 }
+Set-Location $baseDir
+$size = [math]::Round((Get-Item dist\edge-ai-server.exe).Length / 1MB, 1)
+Write-Host "  Server built: dist\edge-ai-server.exe ($size MB)" -ForegroundColor Green
+Write-Host ""
+
+# Stage installer payload
+Write-Host "[4/5] Staging installer payload..." -ForegroundColor Yellow
+Remove-Item -Recurse -Force installer\payload -ErrorAction SilentlyContinue
+New-Item -ItemType Directory -Force -Path installer\payload\data\nef\kl520 | Out-Null
+New-Item -ItemType Directory -Force -Path installer\payload\data\nef\kl720 | Out-Null
+New-Item -ItemType Directory -Force -Path installer\payload\scripts\firmware\KL520 | Out-Null
+New-Item -ItemType Directory -Force -Path installer\payload\scripts\firmware\KL720 | Out-Null
+
+Copy-Item dist\edge-ai-server.exe installer\payload\
+Copy-Item server\data\models.json installer\payload\data\
+Copy-Item server\data\nef\kl520\*.nef installer\payload\data\nef\kl520\
+Copy-Item server\data\nef\kl720\*.nef installer\payload\data\nef\kl720\
+Copy-Item server\scripts\kneron_bridge.py installer\payload\scripts\
+Copy-Item server\scripts\requirements.txt installer\payload\scripts\
+Copy-Item server\scripts\update_kl720_firmware.py installer\payload\scripts\
+Copy-Item scripts\kneron_detect.py installer\payload\scripts\
+Copy-Item server\scripts\firmware\KL520\*.bin installer\payload\scripts\firmware\KL520\
+Copy-Item server\scripts\firmware\KL720\*.bin installer\payload\scripts\firmware\KL720\
+
+# Copy libusb DLL if available
+$libusbSrc = Join-Path $repoRoot "local_service_win\third_party\Kneron_DFUT\bin\libusb-1.0.dll"
+if (Test-Path $libusbSrc) {
+    Copy-Item $libusbSrc installer\payload\scripts\
+    Write-Host "  libusb-1.0.dll bundled." -ForegroundColor Green
+} else {
+    Write-Host "  libusb-1.0.dll not found, skipping." -ForegroundColor Yellow
+}
+
+$fileCount = (Get-ChildItem -Recurse installer\payload -File).Count
+Write-Host "  Payload staged: $fileCount files." -ForegroundColor Green
+Write-Host ""
+
+# Build installer
+Write-Host "[5/5] Building Wails installer..." -ForegroundColor Yellow
+Set-Location installer
+wails build -clean
+if ($LASTEXITCODE -ne 0) { Write-Host "Wails build failed" -ForegroundColor Red; exit 1 }
+Set-Location $baseDir
+
+$exe = "installer\build\bin\EdgeAI-Installer.exe"
+if (Test-Path $exe) {
+    $size = [math]::Round((Get-Item $exe).Length / 1MB, 1)
+    Write-Host ""
+    Write-Host "=== Build complete! ===" -ForegroundColor Cyan
+    Write-Host "  Output: $baseDir\$exe ($size MB)" -ForegroundColor Green
+} else {
+    Write-Host "Build output not found!" -ForegroundColor Red
+    exit 1
+}