feat(tui): add fzf-based folder browser for export/import path prompts

Read-Host has no tab-completion (that's a top-level PSReadLine feature,
not available to script prompts), so reuse the fzf dependency already
required for menus to browse folders interactively instead: navigate
into subfolders, go up with .., confirm current folder, or type a path
manually. Falls back to plain Read-Host when fzf isn't installed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Scripts/Private/Start-IntuneManagementTui.ps1

@@ -107,6 +107,41 @@ function Select-MenuItem
     return Show-NumberedMenu -Items $Items -Header $Header -Multi:$Multi
 }
 
+function Select-FolderPath
+{
+    param(
+        [Parameter(Mandatory)]
+        [string]$Prompt,
+        [string]$StartPath = (Get-Location).Path
+    )
+    if(-not (Test-FzfAvailable))
+    {
+        return Read-Host $Prompt
+    }
+
+    $current = if(Test-Path -LiteralPath $StartPath) { (Resolve-Path -LiteralPath $StartPath).Path } else { (Get-Location).Path }
+
+    while($true)
+    {
+        $entries = @("[Use this folder]", "[Type path manually]")
+        $parent = Split-Path -Path $current -Parent
+        if($parent) { $entries += ".." }
+        $subdirs = Get-ChildItem -LiteralPath $current -Directory -ErrorAction SilentlyContinue | Sort-Object Name | ForEach-Object { "$($_.Name)/" }
+        $entries += $subdirs
+
+        $choice = $entries | fzf --header="$Prompt  [current: $current]"
+        if(-not $choice) { return $null }
+
+        switch ($choice)
+        {
+            "[Use this folder]"      { return $current }
+            "[Type path manually]"   { $typed = Read-Host "Enter path"; if(-not [string]::IsNullOrWhiteSpace($typed)) { return $typed }; continue }
+            ".."                     { $current = $parent; continue }
+            default                  { $current = Join-Path $current ($choice.TrimEnd('/')); continue }
+        }
+    }
+}
+
 function Read-YesNo
 {
     param(
@@ -275,18 +310,18 @@ while($true)
                 if([string]::IsNullOrWhiteSpace($tenantIdForReport)) { Write-Host "Tenant ID is required." -ForegroundColor Red; continue }
             }
 
-            $exportPath = Read-Host "Export path (where to save fresh data)"
+            $exportPath = Select-FolderPath -Prompt "Select export path (where to save fresh data)"
             if([string]::IsNullOrWhiteSpace($exportPath)) { Write-Host "Export path is required." -ForegroundColor Red; continue }
             $backupRoot = $exportPath
         }
         else
         {
-            $backupRoot = Read-Host "Backup root path (folder containing 'Settings Catalog', etc.)"
+            $backupRoot = Select-FolderPath -Prompt "Select backup root (folder containing 'Settings Catalog', etc.)"
             if([string]::IsNullOrWhiteSpace($backupRoot)) { Write-Host "Backup root is required." -ForegroundColor Red; continue }
             if(-not (Test-Path $backupRoot)) { Write-Host "Path not found: $backupRoot" -ForegroundColor Red; continue }
         }
 
-        $outputDir = Read-Host "Enter output directory for reports"
+        $outputDir = Select-FolderPath -Prompt "Select output directory for reports"
         if([string]::IsNullOrWhiteSpace($outputDir)) { Write-Host "Output directory is required." -ForegroundColor Red; continue }
 
         $includeAssignmentsInSettings = $false
@@ -358,8 +393,8 @@ while($true)
     if(-not $typeSelection) { continue }
 
 # 4. Path
-$pathPrompt = if($action -eq "Export") { "Enter export root folder path" } else { "Enter import root folder path" }
-$path = Read-Host $pathPrompt
+$pathPrompt = if($action -eq "Export") { "Select export root folder" } else { "Select import root folder" }
+$path = Select-FolderPath -Prompt $pathPrompt
 if([string]::IsNullOrWhiteSpace($path)) { Write-Host "Path is required." -ForegroundColor Red; return $null }
 
 # 5. Name Filter