Shopfloor: single autologon, clear Start pins, Intune sync tool, update docs

- AutoLogonCount reduced from 2 to 1 in Run-ShopfloorSetup.ps1
- Remove default pinned Start Menu tiles and set blank layout for future users
- Add sync_intune.bat: triggers MDM sync and polls for SFLD group policies
- Update README.md and SETUP.md with current project state (boot chain, new
  scripts, samba shares, webapp pages, commit history)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

playbook/shopfloor-setup/Shopfloor/03-StartMenu.ps1

@@ -1,6 +1,36 @@
 # 03-StartMenu.ps1 — Create Start Menu shortcuts for all users (baseline)
 # Shortcuts in ProgramData\Microsoft\Windows\Start Menu\Programs\ persist for all accounts.
 
+# --- Remove all default pinned Start Menu tiles ---
+# Unpin tiles for the current user
+try {
+    $shell = New-Object -ComObject Shell.Application
+    $shell.NameSpace('shell:::{4234d49b-0245-4df3-b780-3893943456e1}').Items() | ForEach-Object {
+        $_.Verbs() | Where-Object { $_.Name -match 'Unpin from Start|Un.*pin' } | ForEach-Object { $_.DoIt() }
+    }
+    Write-Host "Unpinned all default Start Menu tiles for current user."
+} catch {
+    Write-Warning "Could not unpin Start tiles: $_"
+}
+
+# Set blank layout for future user profiles
+$blankLayout = @"
+<LayoutModificationTemplate xmlns:defaultlayout="http://schemas.microsoft.com/Start/2014/FullDefaultLayout"
+    xmlns:start="http://schemas.microsoft.com/Start/2014/StartLayout"
+    Version="1" xmlns="http://schemas.microsoft.com/Start/2014/LayoutModification">
+  <LayoutOptions StartTileGroupCellWidth="6" />
+  <DefaultLayoutOverride>
+    <StartLayoutCollection>
+      <defaultlayout:StartLayout GroupCellWidth="6" />
+    </StartLayoutCollection>
+  </DefaultLayoutOverride>
+</LayoutModificationTemplate>
+"@
+$layoutDir = "C:\Users\Default\AppData\Local\Microsoft\Windows\Shell"
+if (-not (Test-Path $layoutDir)) { New-Item -Path $layoutDir -ItemType Directory -Force | Out-Null }
+$blankLayout | Out-File -FilePath "$layoutDir\LayoutModification.xml" -Encoding UTF8 -Force
+Write-Host "Set blank Start Menu layout for future users."
+
 $startMenu = "C:\ProgramData\Microsoft\Windows\Start Menu\Programs"
 $shell = New-Object -ComObject WScript.Shell