Add uninstall scripts for all platforms

scripts/uninstall.ps1

@@ -0,0 +1,41 @@
+#
+# SeedPass Uninstaller for Windows
+#
+# Removes the SeedPass application files but preserves user data under ~/.seedpass
+
+$AppRootDir = Join-Path $env:USERPROFILE ".seedpass"
+$InstallDir = Join-Path $AppRootDir "app"
+$LauncherDir = Join-Path $InstallDir "bin"
+$LauncherName = "seedpass.cmd"
+
+function Write-Info { param([string]$Message) Write-Host "[INFO] $Message" -ForegroundColor Cyan }
+function Write-Success { param([string]$Message) Write-Host "[SUCCESS] $Message" -ForegroundColor Green }
+function Write-Warning { param([string]$Message) Write-Host "[WARNING] $Message" -ForegroundColor Yellow }
+function Write-Error { param([string]$Message) Write-Host "[ERROR] $Message" -ForegroundColor Red }
+
+Write-Info "Removing SeedPass installation..."
+
+if (Test-Path $InstallDir) {
+    Remove-Item -Recurse -Force $InstallDir
+    Write-Info "Deleted '$InstallDir'"
+} else {
+    Write-Info "Installation directory not found."
+}
+
+$LauncherPath = Join-Path $LauncherDir $LauncherName
+if (Test-Path $LauncherPath) {
+    Remove-Item -Force $LauncherPath
+    Write-Info "Removed launcher '$LauncherPath'"
+} else {
+    Write-Info "Launcher not found."
+}
+
+Write-Info "Attempting to uninstall any global 'seedpass' package with pip..."
+try {
+    pip uninstall -y seedpass | Out-Null
+} catch {
+    try { pip3 uninstall -y seedpass | Out-Null } catch {}
+}
+
+Write-Success "SeedPass uninstalled. User data under '$AppRootDir' was left intact."
+