Add portable flash-drive installer

- build-release.ps1: builds Docker image, saves to tar, bundles
  everything into dist\ ready to copy to a flash drive
- installer/install.ps1: checks WSL2, Docker Desktop, loads image
  (or builds from source as fallback), prompts for photo/data paths,
  writes docker-compose.override.yml, starts container, creates
  desktop shortcut
- installer/uninstall.ps1: stops container, optionally removes image
  and data, removes shortcut and app directory
- installer/dupfinder-start-stop.ps1: start/stop/restart/open helper
  copied to target machine during install; desktop shortcut uses -Action open
  which polls until the app is responsive before launching browser

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

build-release.ps1

@@ -0,0 +1,153 @@
+#Requires -Version 5.1
+<#
+.SYNOPSIS
+    Builds the DupFinder flash-drive installer bundle.
+.DESCRIPTION
+    1. Builds the Docker image
+    2. Saves it to dist\image\dupfinder.tar
+    3. Copies all installer scripts and source into dist\
+    Run this from the repo root before copying dist\ to a flash drive.
+.EXAMPLE
+    .\build-release.ps1
+    .\build-release.ps1 -SkipBuild   # Skip docker build (reuse existing image)
+#>
+param(
+    [switch]$SkipBuild,
+    [string]$ImageName = "dupfinder",
+    [string]$ImageTag  = "latest"
+)
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = "Stop"
+
+$RepoRoot  = $PSScriptRoot
+$DistDir   = Join-Path $RepoRoot "dist"
+$ImageFull = "${ImageName}:${ImageTag}"
+
+function Write-Step([string]$msg) {
+    Write-Host "`n==> $msg" -ForegroundColor Cyan
+}
+function Write-OK([string]$msg) {
+    Write-Host "    [OK] $msg" -ForegroundColor Green
+}
+function Write-Fail([string]$msg) {
+    Write-Host "    [!!] $msg" -ForegroundColor Red
+}
+
+# ── Check Docker is running ───────────────────────────────────────────────────
+Write-Step "Checking Docker..."
+docker info 2>&1 | Out-Null
+if ($LASTEXITCODE -ne 0) {
+    Write-Fail "Docker is not running. Start Docker Desktop and try again."
+    exit 1
+}
+Write-OK "Docker is running"
+
+# ── Build image ───────────────────────────────────────────────────────────────
+if (-not $SkipBuild) {
+    Write-Step "Building Docker image ($ImageFull)..."
+    docker build -t $ImageFull --progress=plain $RepoRoot
+    if ($LASTEXITCODE -ne 0) { Write-Fail "Docker build failed."; exit 1 }
+    Write-OK "Image built: $ImageFull"
+} else {
+    Write-Step "Skipping build (-SkipBuild). Checking image exists..."
+    $exists = docker images $ImageFull --format "{{.ID}}" 2>$null
+    if (-not $exists) {
+        Write-Fail "Image $ImageFull not found locally. Remove -SkipBuild to build it."
+        exit 1
+    }
+    Write-OK "Image found: $ImageFull"
+}
+
+# ── Clean dist\ ──────────────────────────────────────────────────────────────
+Write-Step "Preparing dist\ directory..."
+if (Test-Path $DistDir) {
+    Remove-Item $DistDir -Recurse -Force
+}
+New-Item -ItemType Directory -Path $DistDir            | Out-Null
+New-Item -ItemType Directory -Path "$DistDir\image"    | Out-Null
+New-Item -ItemType Directory -Path "$DistDir\source"   | Out-Null
+New-Item -ItemType Directory -Path "$DistDir\assets"   | Out-Null
+Write-OK "dist\ ready"
+
+# ── Save Docker image ─────────────────────────────────────────────────────────
+Write-Step "Saving Docker image to dist\image\dupfinder.tar (this may take a minute)..."
+docker save -o "$DistDir\image\dupfinder.tar" $ImageFull
+if ($LASTEXITCODE -ne 0) { Write-Fail "docker save failed."; exit 1 }
+$tarSize = [math]::Round((Get-Item "$DistDir\image\dupfinder.tar").Length / 1MB, 1)
+Write-OK "Image saved (${tarSize} MB)"
+
+# ── Copy installer scripts ────────────────────────────────────────────────────
+Write-Step "Copying installer scripts..."
+Copy-Item "$RepoRoot\installer\install.ps1"              "$DistDir\install.ps1"
+Copy-Item "$RepoRoot\installer\uninstall.ps1"            "$DistDir\uninstall.ps1"
+Copy-Item "$RepoRoot\installer\dupfinder-start-stop.ps1" "$DistDir\dupfinder-start-stop.ps1"
+Copy-Item "$RepoRoot\docker-compose.yml"                 "$DistDir\docker-compose.yml"
+
+# install.bat launcher (no-click PS1 execution for non-technical users)
+@'
+@echo off
+echo Starting DupFinder installer...
+PowerShell -ExecutionPolicy Bypass -File "%~dp0install.ps1"
+pause
+'@ | Set-Content "$DistDir\INSTALL.bat" -Encoding ASCII
+
+Write-OK "Scripts copied"
+
+# ── Copy source (fallback build) ──────────────────────────────────────────────
+Write-Step "Copying source files (offline build fallback)..."
+$excludeDirs  = @('dist', '__pycache__', 'data', '.git', '.claude', 'installer')
+$excludeFiles = @('*.db', '*.db-shm', '*.db-wal', '*.pyc', '*.pyo')
+
+Get-ChildItem $RepoRoot -Recurse | Where-Object {
+    $item = $_
+    $skip = $false
+    foreach ($d in $excludeDirs)  { if ($item.FullName -match [regex]::Escape($d)) { $skip = $true } }
+    foreach ($f in $excludeFiles) { if ($item.Name -like $f) { $skip = $true } }
+    -not $skip
+} | ForEach-Object {
+    $rel = $_.FullName.Substring($RepoRoot.Length + 1)
+    $dst = Join-Path "$DistDir\source" $rel
+    if ($_.PSIsContainer) {
+        New-Item -ItemType Directory -Path $dst -Force | Out-Null
+    } else {
+        $dstDir = Split-Path $dst -Parent
+        if (-not (Test-Path $dstDir)) { New-Item -ItemType Directory -Path $dstDir -Force | Out-Null }
+        Copy-Item $_.FullName $dst -Force
+    }
+}
+Write-OK "Source copied"
+
+# ── README for flash drive ────────────────────────────────────────────────────
+@"
+DupFinder Installer
+===================
+
+Requirements:
+  - Windows 10/11 (64-bit)
+  - Docker Desktop for Windows (if not installed, the installer will guide you)
+
+To install:
+  1. Right-click INSTALL.bat -> "Run as administrator"
+     OR
+     Open PowerShell as Administrator and run:
+     PowerShell -ExecutionPolicy Bypass -File install.ps1
+
+  2. Follow the prompts (photos path, data path)
+
+  3. A "DupFinder" shortcut will appear on the desktop when done.
+
+To uninstall:
+  Run uninstall.ps1 as Administrator.
+
+Built: $(Get-Date -Format 'yyyy-MM-dd HH:mm')
+Image: $ImageFull
+"@ | Set-Content "$DistDir\README.txt" -Encoding UTF8
+
+# ── Summary ───────────────────────────────────────────────────────────────────
+$totalMB = [math]::Round((Get-ChildItem $DistDir -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB, 1)
+Write-Host ""
+Write-Host "============================================" -ForegroundColor Green
+Write-Host " Build complete!  dist\ is ${totalMB} MB total" -ForegroundColor Green
+Write-Host " Copy the dist\ folder to your flash drive." -ForegroundColor Green
+Write-Host "============================================" -ForegroundColor Green

installer/dupfinder-start-stop.ps1

@@ -0,0 +1,71 @@
+#Requires -Version 5.1
+<#
+.SYNOPSIS
+    Start, stop, restart DupFinder, or open it in the browser.
+.PARAMETER Action
+    start | stop | restart | open (default: open)
+.EXAMPLE
+    .\dupfinder-start-stop.ps1 -Action open
+    .\dupfinder-start-stop.ps1 -Action stop
+#>
+param(
+    [ValidateSet("start","stop","restart","open")]
+    [string]$Action = "open"
+)
+
+$ConfigFile = "C:\ProgramData\DupFinder\dupfinder.conf"
+
+if (-not (Test-Path $ConfigFile)) {
+    Write-Error "DupFinder is not installed. Run install.ps1 first."
+    exit 1
+}
+
+# Read config
+$conf = @{}
+Get-Content $ConfigFile | ForEach-Object {
+    if ($_ -match '^(.+?)=(.+)$') { $conf[$Matches[1]] = $Matches[2] }
+}
+
+$ComposeDir  = $conf["COMPOSE_DIR"]
+$AppPort     = $conf["APP_PORT"]
+$ComposeYml  = "$ComposeDir\docker-compose.yml"
+$OverrideYml = "$ComposeDir\docker-compose.override.yml"
+$Url         = "http://localhost:$AppPort"
+
+function Invoke-Compose([string]$cmd) {
+    & docker compose -f $ComposeYml -f $OverrideYml $cmd.Split(" ")
+}
+
+switch ($Action) {
+    "start" {
+        Write-Host "Starting DupFinder..."
+        Invoke-Compose "up -d --pull never"
+    }
+    "stop" {
+        Write-Host "Stopping DupFinder..."
+        Invoke-Compose "stop"
+    }
+    "restart" {
+        Write-Host "Restarting DupFinder..."
+        Invoke-Compose "restart"
+    }
+    "open" {
+        # Ensure container is running
+        $running = docker ps --filter "name=dup-finder" --format "{{.Names}}" 2>$null
+        if (-not $running) {
+            Write-Host "Starting DupFinder..."
+            Invoke-Compose "up -d --pull never"
+        }
+        # Poll until responsive (up to 15s)
+        $tries = 0
+        while ($tries -lt 15) {
+            try {
+                $r = Invoke-WebRequest -Uri $Url -UseBasicParsing -TimeoutSec 1 -ErrorAction Stop
+                break
+            } catch { }
+            Start-Sleep 1
+            $tries++
+        }
+        Start-Process $Url
+    }
+}

installer/install.ps1

@@ -0,0 +1,276 @@
+#Requires -Version 5.1
+<#
+.SYNOPSIS
+    Installs DupFinder on this workstation.
+.DESCRIPTION
+    - Verifies Docker Desktop is installed and running
+    - Loads the pre-built Docker image (or builds from source as fallback)
+    - Prompts for photos library path and data storage path
+    - Writes a docker-compose.override.yml
+    - Starts the container
+    - Creates a desktop shortcut
+.PARAMETER ForceReload
+    Re-load the Docker image even if it's already present locally.
+.EXAMPLE
+    PowerShell -ExecutionPolicy Bypass -File install.ps1
+#>
+param(
+    [switch]$ForceReload
+)
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = "Stop"
+
+$ScriptDir   = $PSScriptRoot
+$AppDir      = "C:\ProgramData\DupFinder"
+$ConfigFile  = "$AppDir\dupfinder.conf"
+$OverrideYml = "$AppDir\docker-compose.override.yml"
+$ComposeYml  = "$AppDir\docker-compose.yml"
+$ImageName   = "dupfinder:latest"
+$TarPath     = "$ScriptDir\image\dupfinder.tar"
+$SourcePath  = "$ScriptDir\source"
+$AppPort     = 8765
+
+function Write-Step([string]$msg) { Write-Host "`n==> $msg" -ForegroundColor Cyan }
+function Write-OK([string]$msg)   { Write-Host "    OK  $msg" -ForegroundColor Green }
+function Write-Warn([string]$msg) { Write-Host "    !!  $msg" -ForegroundColor Yellow }
+function Write-Fail([string]$msg) { Write-Host "`n[FAIL] $msg" -ForegroundColor Red }
+function Pause-Continue {
+    Write-Host "`nPress Enter to continue..." -NoNewline
+    $null = Read-Host
+}
+
+# ── 1. Admin check ────────────────────────────────────────────────────────────
+$principal = [Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
+if (-not $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
+    Write-Fail "This script must be run as Administrator."
+    Write-Host "Right-click install.ps1 and choose 'Run as administrator', or use:"
+    Write-Host "  PowerShell -ExecutionPolicy Bypass -File `"$PSCommandPath`""
+    exit 1
+}
+
+Write-Host ""
+Write-Host "  ====================================" -ForegroundColor Magenta
+Write-Host "   DupFinder Installer" -ForegroundColor Magenta
+Write-Host "  ====================================" -ForegroundColor Magenta
+Write-Host ""
+
+# ── 2. WSL2 check ─────────────────────────────────────────────────────────────
+Write-Step "Checking WSL2..."
+$wslOut = & wsl --status 2>&1
+if ($LASTEXITCODE -ne 0) {
+    Write-Warn "WSL2 is not installed or needs updating."
+    Write-Host "    Installing WSL2 (requires internet + possible reboot)..."
+    & wsl --install --no-distribution 2>&1 | Out-Null
+    Write-Warn "A reboot may be required. After rebooting, re-run this installer."
+    Pause-Continue
+    exit 0
+}
+Write-OK "WSL2 is present"
+
+# ── 3. Docker detection ───────────────────────────────────────────────────────
+Write-Step "Checking Docker Desktop..."
+
+$dockerExe = $null
+$dockerCmd = Get-Command docker -ErrorAction SilentlyContinue
+if ($dockerCmd) {
+    $dockerExe = $dockerCmd.Source
+} else {
+    # Check known install locations
+    $candidates = @(
+        "$env:ProgramFiles\Docker\Docker\resources\bin\docker.exe",
+        "$env:LOCALAPPDATA\Programs\Docker\Docker\resources\bin\docker.exe"
+    )
+    foreach ($c in $candidates) {
+        if (Test-Path $c) { $dockerExe = $c; break }
+    }
+}
+
+if (-not $dockerExe) {
+    Write-Warn "Docker Desktop is not installed."
+
+    $bundledInstaller = "$ScriptDir\assets\DockerDesktopInstaller.exe"
+    if (Test-Path $bundledInstaller) {
+        Write-Host "    Found bundled Docker Desktop installer. Installing..."
+        Start-Process -Wait $bundledInstaller -ArgumentList "install --quiet --accept-license"
+        Write-Warn "Docker Desktop was installed. A reboot may be required."
+        Write-Host "    After rebooting, re-run this installer."
+        Pause-Continue
+        exit 0
+    } else {
+        Write-Host "    Opening Docker Desktop download page in your browser..."
+        Start-Process "https://www.docker.com/products/docker-desktop/"
+        Write-Host "    Install Docker Desktop, then re-run this script."
+        Pause-Continue
+        exit 0
+    }
+}
+Write-OK "Docker executable found: $dockerExe"
+
+# ── 4. Ensure Docker daemon is running ────────────────────────────────────────
+Write-Step "Waiting for Docker daemon..."
+$maxWait = 60
+$waited  = 0
+while ($waited -lt $maxWait) {
+    $info = docker info 2>&1
+    if ($LASTEXITCODE -eq 0) { break }
+    if ($waited -eq 0) {
+        # Try to start Docker Desktop
+        $desktopExe = "$env:ProgramFiles\Docker\Docker\Docker Desktop.exe"
+        if (Test-Path $desktopExe) {
+            Write-Host "    Starting Docker Desktop..."
+            Start-Process $desktopExe
+        }
+        Write-Host "    Waiting for Docker to become ready (up to ${maxWait}s)..."
+        Write-Host "    If a Docker Desktop setup window appeared, please complete it."
+    }
+    Start-Sleep 3
+    $waited += 3
+    Write-Host "    ... ${waited}s" -NoNewline
+}
+Write-Host ""
+docker info 2>&1 | Out-Null
+if ($LASTEXITCODE -ne 0) {
+    Write-Fail "Docker did not start within ${maxWait}s. Please start Docker Desktop manually and re-run."
+    exit 1
+}
+Write-OK "Docker daemon is running"
+
+# ── 5. docker compose V2 check ────────────────────────────────────────────────
+docker compose version 2>&1 | Out-Null
+if ($LASTEXITCODE -ne 0) {
+    Write-Fail "docker compose (V2 plugin) not found. Please update Docker Desktop to 4.0+ and re-run."
+    exit 1
+}
+Write-OK "docker compose V2 available"
+
+# ── 6. Load / build image ─────────────────────────────────────────────────────
+Write-Step "Preparing DupFinder Docker image..."
+$existingImage = (docker images $ImageName --format "{{.ID}}" 2>$null)
+
+if ($existingImage -and -not $ForceReload) {
+    Write-OK "Image already loaded (use -ForceReload to replace it)"
+} elseif (Test-Path $TarPath) {
+    Write-Host "    Loading image from $TarPath ..."
+    docker load -i $TarPath
+    if ($LASTEXITCODE -ne 0) { Write-Fail "docker load failed."; exit 1 }
+    Write-OK "Image loaded from tar"
+} elseif (Test-Path "$SourcePath\Dockerfile") {
+    Write-Warn "No pre-built image found. Building from source (requires internet)..."
+    docker build -t $ImageName $SourcePath
+    if ($LASTEXITCODE -ne 0) { Write-Fail "docker build failed."; exit 1 }
+    Write-OK "Image built from source"
+} else {
+    Write-Fail "No image tar and no source Dockerfile found. Bundle may be incomplete."
+    exit 1
+}
+
+# ── 7. Collect paths from user ────────────────────────────────────────────────
+Write-Step "Configuration"
+Write-Host ""
+
+# Load existing config as defaults if re-running
+$defaultPhotos = "C:\Photos"
+$defaultData   = "C:\ProgramData\DupFinder\data"
+if (Test-Path $ConfigFile) {
+    Get-Content $ConfigFile | ForEach-Object {
+        if ($_ -match '^PHOTOS_PATH=(.+)$') { $defaultPhotos = $Matches[1] }
+        if ($_ -match '^DATA_PATH=(.+)$')   { $defaultData   = $Matches[1] }
+    }
+}
+
+# Photos path
+do {
+    Write-Host "  Photos library path (read-only mount):"
+    Write-Host "  Default: $defaultPhotos"
+    $input = (Read-Host "  Path").Trim().Trim('"')
+    if ([string]::IsNullOrWhiteSpace($input)) { $input = $defaultPhotos }
+    $PhotosPath = $input
+    if (-not (Test-Path $PhotosPath -PathType Container)) {
+        Write-Warn "Path not found: $PhotosPath  (try again)"
+    }
+} while (-not (Test-Path $PhotosPath -PathType Container))
+Write-OK "Photos: $PhotosPath"
+
+# Data path
+Write-Host ""
+Write-Host "  Database / data storage path:"
+Write-Host "  Default: $defaultData"
+$input = (Read-Host "  Path").Trim().Trim('"')
+if ([string]::IsNullOrWhiteSpace($input)) { $input = $defaultData }
+$DataPath = $input
+New-Item -ItemType Directory -Force -Path $DataPath | Out-Null
+Write-OK "Data:   $DataPath"
+
+# ── 8. Port conflict check ────────────────────────────────────────────────────
+$portInUse = Test-NetConnection localhost -Port $AppPort `
+             -InformationLevel Quiet -WarningAction SilentlyContinue 2>$null
+if ($portInUse) {
+    Write-Warn "Port $AppPort is already in use. DupFinder may already be running."
+}
+
+# ── 9. Write config and compose override ─────────────────────────────────────
+Write-Step "Writing configuration..."
+New-Item -ItemType Directory -Force -Path $AppDir | Out-Null
+
+# Docker requires forward slashes
+$PhotosDocker = $PhotosPath -replace '\\', '/' -replace '//', '/'
+$DataDocker   = $DataPath   -replace '\\', '/' -replace '//', '/'
+
+@"
+PHOTOS_PATH=$PhotosPath
+DATA_PATH=$DataPath
+APP_PORT=$AppPort
+COMPOSE_DIR=$AppDir
+"@ | Set-Content $ConfigFile -Encoding UTF8
+
+@"
+services:
+  dup-finder:
+    ports:
+      - "${AppPort}:8000"
+    volumes:
+      - "$PhotosDocker:/photos:ro"
+      - "$DataDocker:/data"
+"@ | Set-Content $OverrideYml -Encoding UTF8
+
+# Copy base compose file
+Copy-Item "$ScriptDir\docker-compose.yml" $ComposeYml -Force
+
+# Copy start-stop helper
+Copy-Item "$ScriptDir\dupfinder-start-stop.ps1" "$AppDir\dupfinder-start-stop.ps1" -Force
+
+Write-OK "Config written to $AppDir"
+
+# ── 10. Start container ───────────────────────────────────────────────────────
+Write-Step "Starting DupFinder container..."
+docker compose -f $ComposeYml -f $OverrideYml up -d --pull never
+if ($LASTEXITCODE -ne 0) { Write-Fail "docker compose up failed."; exit 1 }
+Write-OK "Container started"
+
+# ── 11. Create desktop shortcut ───────────────────────────────────────────────
+Write-Step "Creating desktop shortcut..."
+$ShortcutPath = "$env:PUBLIC\Desktop\DupFinder.lnk"
+$WshShell     = New-Object -ComObject WScript.Shell
+$Shortcut     = $WshShell.CreateShortcut($ShortcutPath)
+$Shortcut.TargetPath   = "powershell.exe"
+$Shortcut.Arguments    = "-ExecutionPolicy Bypass -WindowStyle Hidden -File `"$AppDir\dupfinder-start-stop.ps1`" -Action open"
+$Shortcut.Description  = "Open DupFinder Duplicate Photo Scanner"
+$Shortcut.WindowStyle  = 7  # Minimized — hides the PS window
+$Shortcut.Save()
+Write-OK "Shortcut created: $ShortcutPath"
+
+# ── 12. Done ──────────────────────────────────────────────────────────────────
+Write-Host ""
+Write-Host "  ============================================" -ForegroundColor Green
+Write-Host "   DupFinder installed successfully!" -ForegroundColor Green
+Write-Host "   Open: http://localhost:$AppPort" -ForegroundColor Green
+Write-Host "   Or double-click DupFinder on your desktop." -ForegroundColor Green
+Write-Host "  ============================================" -ForegroundColor Green
+Write-Host ""
+
+# Open browser
+$open = Read-Host "Open DupFinder in browser now? (Y/n)"
+if ($open -ne 'n' -and $open -ne 'N') {
+    Start-Process "http://localhost:$AppPort"
+}

installer/uninstall.ps1

@@ -0,0 +1,76 @@
+#Requires -Version 5.1
+<#
+.SYNOPSIS
+    Uninstalls DupFinder from this workstation.
+#>
+
+$principal = [Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
+if (-not $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
+    Write-Error "This script must be run as Administrator."
+    exit 1
+}
+
+$ConfigFile   = "C:\ProgramData\DupFinder\dupfinder.conf"
+$AppDir       = "C:\ProgramData\DupFinder"
+$ShortcutPath = "$env:PUBLIC\Desktop\DupFinder.lnk"
+
+Write-Host ""
+Write-Host "  DupFinder Uninstaller" -ForegroundColor Magenta
+Write-Host ""
+
+if (-not (Test-Path $ConfigFile)) {
+    Write-Warning "DupFinder config not found. It may not be installed, or was already removed."
+    exit 0
+}
+
+# Read config
+$conf = @{}
+Get-Content $ConfigFile | ForEach-Object {
+    if ($_ -match '^(.+?)=(.+)$') { $conf[$Matches[1]] = $Matches[2] }
+}
+$ComposeDir  = $conf["COMPOSE_DIR"]
+$DataPath    = $conf["DATA_PATH"]
+$ComposeYml  = "$ComposeDir\docker-compose.yml"
+$OverrideYml = "$ComposeDir\docker-compose.override.yml"
+
+# ── Stop and remove container ─────────────────────────────────────────────────
+Write-Host "Stopping and removing container..."
+docker compose -f $ComposeYml -f $OverrideYml down 2>$null
+Write-Host "  Done."
+
+# ── Remove Docker image? ──────────────────────────────────────────────────────
+$rmImage = Read-Host "Remove the DupFinder Docker image? Frees ~300-600 MB (Y/n)"
+if ($rmImage -ne 'n' -and $rmImage -ne 'N') {
+    docker rmi dupfinder:latest 2>$null
+    Write-Host "  Image removed."
+}
+
+# ── Remove data directory? ────────────────────────────────────────────────────
+Write-Host ""
+Write-Host "Data directory: $DataPath"
+Write-Host "This contains the scan database and all decisions."
+$rmData = Read-Host "Remove data directory? This CANNOT be undone. (y/N)"
+if ($rmData -eq 'y' -or $rmData -eq 'Y') {
+    if (Test-Path $DataPath) {
+        Remove-Item $DataPath -Recurse -Force
+        Write-Host "  Data directory removed."
+    }
+} else {
+    Write-Host "  Data directory kept at: $DataPath"
+}
+
+# ── Remove shortcut ───────────────────────────────────────────────────────────
+if (Test-Path $ShortcutPath) {
+    Remove-Item $ShortcutPath -Force
+    Write-Host "Desktop shortcut removed."
+}
+
+# ── Remove app directory ──────────────────────────────────────────────────────
+if (Test-Path $AppDir) {
+    Remove-Item $AppDir -Recurse -Force
+    Write-Host "App directory removed: $AppDir"
+}
+
+Write-Host ""
+Write-Host "  DupFinder has been uninstalled." -ForegroundColor Green
+Write-Host ""