feat(ui): detect missing fzf and show installation hints

Scripts/Start-IntuneToolkit.ps1

@@ -35,6 +35,29 @@ function Test-FzfAvailable
     return [bool](Get-Command fzf -ErrorAction SilentlyContinue)
 }
 
+function Show-FzfHint
+{
+    if(Test-FzfAvailable) { return }
+    Write-Host "`n[fzf not found]" -ForegroundColor Yellow -NoNewline
+    Write-Host " Install fzf for the best interactive menu experience.`n" -ForegroundColor DarkGray
+    if($IsMacOS)
+    {
+        Write-Host "  macOS:   brew install fzf" -ForegroundColor DarkGray
+    }
+    elseif($IsLinux)
+    {
+        Write-Host "  Debian/Ubuntu: sudo apt install fzf" -ForegroundColor DarkGray
+        Write-Host "  Fedora:        sudo dnf install fzf" -ForegroundColor DarkGray
+        Write-Host "  Arch:          sudo pacman -S fzf" -ForegroundColor DarkGray
+    }
+    else
+    {
+        Write-Host "  Windows: winget install junegunn.fzf" -ForegroundColor DarkGray
+        Write-Host "           choco install fzf" -ForegroundColor DarkGray
+    }
+    Write-Host "  (Falling back to numbered menus for now.)`n" -ForegroundColor DarkGray
+}
+
 function Show-FzfMenu
 {
     param(
@@ -263,6 +286,8 @@ if(-not $currentTenant -or -not $currentTenant.TenantName)
 }
 #endregion
 
+Show-FzfHint
+
 # Build common parameter hashtable
 $commonParams = @{
     TenantId = $TenantId