fix: audit hardening 2.1.10-SAC — gitignore, SAC TLS warn, Exchange safety

- Extend .gitignore for local settings, logs, spool, backups
- Log CRITICAL when SacTlsSkipVerify is enabled (Login_Monitor + Sac-Client)
- Exchange-MailSecurity: -WhatIf dry-run, scan safety warnings, v1.6.8
- Remove legacy Watchdog_RDP_Monitor.ps1 and Install-ScheduledTasks.ps1
- Add scripts for GitHub sanitize mirror push workflow

scripts/Push-Mirror.ps1

@@ -1,4 +1,4 @@
-# Push main to a mirror remote with host-specific doc URLs, without leaving URL churn on main.
+# Push main to a mirror remote with host-specific doc URLs, without leaving URL churn on main.
 # Usage: .\scripts\Push-Mirror.ps1 github|kalinamall|papatramp
 param(
     [Parameter(Mandatory = $true)]
@@ -11,7 +11,7 @@ $Root = Split-Path -Parent $PSScriptRoot
 Set-Location $Root
 
 $remote = switch ($Target) {
-    'github' { 'origin' }
+    'github' { 'github' }
     'kalinamall' { 'kalinamall' }
     'papatramp' { 'papatramp' }
 }