feat: add automated environment report export (#5025)

* feat: add automated environment report export

* refactor: address code review comments

* fix: refresh toggle state in environment report

* fix: surface environment report read failures

* test: make registry failure explicit

---------

Co-authored-by: Chris Titus <contact@christitus.com>

functions/private/Get-WinUtilEnvironmentReportLogsPath.ps1

@@ -0,0 +1,16 @@
+function Get-WinUtilEnvironmentReportLogsPath {
+    <#
+    .SYNOPSIS
+        Derives the companion logs .txt path from the environment report's JSON save path.
+    #>
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$JsonPath
+    )
+
+    # ChangeExtension($JsonPath, $null) leaves a trailing dot instead of stripping it, so build the
+    # name from its parts instead.
+    $directory = [System.IO.Path]::GetDirectoryName($JsonPath)
+    $baseName = [System.IO.Path]::GetFileNameWithoutExtension($JsonPath)
+    return [System.IO.Path]::Combine($directory, "${baseName}_logs.txt")
+}