Sub-type aware preinstall, USB drivers/PPKGs, Lab OpenText

- PreInstall runner reads pc-subtype.txt and matches PCTypes against
  both base type (Standard) and composite key (Standard-Machine).
- UDC scoped to Standard-Machine only. eDNC and MachineNumberACLs
  skip on Standard-Timeclock sub-type.
- Lab added to OpenText PCTypes.
- build-usb.sh copies enrollment/ (PPKGs) and drivers-staging/ (Dell
  driver packs) onto USB for self-contained deployment.
- Playbook deploys PPKGs and drivers from USB to PXE server shares.
- Gitignore enrollment/, drivers-staging/, *.ppkg (large binaries).

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

playbook/pxe_server_setup.yml

@@ -319,6 +319,19 @@
         mode: '0644'
       ignore_errors: yes
 
+    - name: "Deploy Dell driver packs to shared Out-of-box Drivers"
+      shell: >
+        if [ -d "{{ usb_mount }}/drivers" ]; then
+          mkdir -p "/srv/samba/winpeapps/_shared/Out-of-box Drivers/Dell_11"
+          cp -r {{ usb_mount }}/drivers/* "/srv/samba/winpeapps/_shared/Out-of-box Drivers/Dell_11/"
+          echo "Deployed Dell drivers from USB"
+        else
+          echo "No drivers/ on USB - skipping"
+        fi
+      args:
+        warn: false
+      ignore_errors: yes
+
     - name: "Deploy shopfloor setup scripts to enrollment share"
       copy:
         src: "{{ usb_mount }}/shopfloor-setup/"