fix(tui): stop re-asking action when launcher already picked Export/Import

Same missing-passthrough bug as the earlier tenant re-prompt fix, this time
for -Action: Start-IntuneManagementTui.ps1 always showed the
Export/Import/DeployCISBaseline/GenerateReports picker even when the
launcher's menu items 1/2 had already decided it. Launcher now passes
-Action through, TUI skips the prompt when supplied.

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

CHANGELOG_macOS_IntuneToolkit.md

@@ -1,5 +1,13 @@
 # macOS Intune Toolkit Changelog
 
+## 2026-08-07 — v4.3.1 — Fix redundant action prompt
+
+### Fixed
+- **`Scripts/Private/Start-IntuneManagementTui.ps1`**
+  - Choosing **1. Export policies** or **2. Import policies** in the launcher still re-asked "Select action" (Export/Import/DeployCISBaseline/GenerateReports) — the same missing-passthrough issue as the tenant re-prompt fix below, just for `-Action`. Now accepts `-Action` and skips the prompt when it's already supplied.
+- **`Start-IntuneToolkit.ps1`** / **`Scripts/Start-HeadlessIntune.ps1`**
+  - Menu items 1/2 now pass `-Action Export` / `-Action Import` through to the headless script and on to the TUI.
+
 ## 2026-08-07 — v4.3.0 — Bulk delete tool and TUI fixes
 
 ### Added