Add universal installer scripts and update README

scripts/install.ps1

@@ -0,0 +1,99 @@
+#
+# SeedPass Universal Installer for Windows
+#
+# Supports installing from a specific branch using the -Branch parameter.
+# Example: .\install.ps1 -Branch beta
+
+param(
+    [string]$Branch = "main" # The git branch to install from
+)
+
+# --- Configuration ---
+$RepoUrl = "https://github.com/PR0M3TH3AN/SeedPass.git"
+$AppRootDir = Join-Path $env:USERPROFILE ".seedpass"
+$InstallDir = Join-Path $AppRootDir "app"
+$VenvDir = Join-Path $InstallDir "venv"
+$LauncherDir = Join-Path $InstallDir "bin"
+$LauncherName = "seedpass.cmd"
+
+# --- Helper Functions ---
+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] $Message" -ForegroundColor Red
+    Read-Host "Press Enter to exit"
+    exit 1
+}
+
+# --- Main Script ---
+
+# 1. Check for prerequisites
+Write-Info "Installing SeedPass from branch: '$Branch'"
+Write-Info "Checking for prerequisites..."
+if (-not (Get-Command git -ErrorAction SilentlyContinue)) { Write-Error "Git is not installed. Please install it from https://git-scm.com/ and ensure it's in your PATH." }
+$pythonExe = Get-Command python -ErrorAction SilentlyContinue
+if (-not $pythonExe) { Write-Error "Python 3 is not installed or not in your PATH. Please install it from https://www.python.org/" }
+
+# 2. Clone or update the repository
+if (Test-Path (Join-Path $InstallDir ".git")) {
+    Write-Info "SeedPass directory found. Fetching updates and switching to '$Branch' branch..."
+    try {
+        Set-Location $InstallDir
+        git fetch origin
+        git checkout $Branch
+        git pull origin $Branch --ff-only
+    } catch { Write-Error "Failed to update repository. Error: $_" }
+} else {
+    Write-Info "Cloning SeedPass '$Branch' branch..."
+    try {
+        if (-not(Test-Path $AppRootDir)) { New-Item -ItemType Directory -Path $AppRootDir | Out-Null }
+        git clone --branch $Branch $RepoUrl $InstallDir
+        Set-Location $InstallDir
+    } catch { Write-Error "Failed to clone repository. Error: $_" }
+}
+
+# 3. Set up Python virtual environment
+Write-Info "Setting up Python virtual environment..."
+if (-not (Test-Path $VenvDir)) {
+    try { python -m venv $VenvDir } catch { Write-Error "Failed to create virtual environment. Error: $_" }
+}
+
+# 4. Install/Update Python dependencies
+Write-Info "Installing/updating Python dependencies..."
+try {
+    & "$VenvDir\Scripts\pip.exe" install --upgrade pip
+    & "$VenvDir\Scripts\pip.exe" install -r "src\requirements.txt"
+} catch {
+    Write-Warning "Failed to install Python dependencies. If errors mention C++, install Microsoft C++ Build Tools: https://visualstudio.microsoft.com/visual-cpp-build-tools/"
+    Write-Error "Dependency installation failed. Error: $_"
+}
+
+# 5. Create launcher script
+Write-Info "Creating launcher script..."
+if (-not (Test-Path $LauncherDir)) { New-Item -ItemType Directory -Path $LauncherDir | Out-Null }
+$LauncherPath = Join-Path $LauncherDir $LauncherName
+$LauncherContent = @"
+@echo off
+setlocal
+call "%~dp0..\venv\Scripts\activate.bat"
+python "%~dp0..\src\main.py" %*
+endlocal
+"@
+Set-Content -Path $LauncherPath -Value $LauncherContent -Force
+
+# 6. Add launcher directory to User's PATH if needed
+Write-Info "Checking if '$LauncherDir' is in your PATH..."
+$UserPath = [System.Environment]::GetEnvironmentVariable("Path", "User")
+if (($UserPath -split ';') -notcontains $LauncherDir) {
+    Write-Info "Adding '$LauncherDir' to your user PATH."
+    $NewPath = "$LauncherDir;$UserPath".Trim(";")
+    [System.Environment]::SetEnvironmentVariable("Path", $NewPath, "User")
+    Write-Warning "PATH has been updated. You MUST open a new terminal for the 'seedpass' command to be available."
+} else {
+    Write-Info "'$LauncherDir' is already in your user PATH."
+}
+
+Write-Success "Installation/update complete!"
+Write-Info "To run the application, please open a NEW terminal window and type: seedpass"