Generic build for other GE sites: no WJ data, one shopfloor type, Windows USB builder

Everything West Jefferson specific moved out to a separate repo
(pxe-site-wj): NTLARS/UDC/heat-treat backups keyed by WJ machine numbers,
CMM and Wax/Trace bay lists, WJ OpenText profiles, site-config.json, the
WJ preinstall list, and the WJ shopfloor PC types (Collections,
NoCollections, Common, Keyence, CMM, Genspect, HeatTreat, Wax/Trace,
Display, PartMarker) with GE-Enforce, machine numbers and the desktop
layout. The part-marker bench tools moved to their own repo. Dead
scripts removed: build-proxmox-iso, deploy-bios, sync_hardware_models,
mirror-from-gold, pull-bios, startnet-template.cmd.

Shopfloor is one generic type, gea-shopfloor-standard, with today's
timing:
- PPKG at first logon (unattend Order 10, unchanged).
- Install-AppList.ps1 runs C:\PreInstall\preinstall.json during setup.
- A new SYSTEM task, GE Shopfloor Post-PPKG, runs postppkg.json once
  after the post-PPKG reboot. It also clears AutoLogonCount after the
  ShopFloor handover (the Users-level monitor can be denied that HKLM
  write) and removes the Intune Sync task when done.
- Both lists ship empty. A site adds entries and installers.
- WinPE choice 3 goes straight to the PPKG menu. Staging, fetch and heal
  carry only the generic payload. The webapp's shopfloor sub-menu editor
  is gone, and the imaging tiles name the new stages.
- The playbook deploys the empty lists only if missing. It now deploys
  the PowerShell 7 MSI the shopfloor unattend installs, which it never
  did before.

Blancco site settings move into the webapp (Updates > Blancco releases):
business location, licensing Wi-Fi SSID and password. They are rendered
into the served preferences.xml and applied to every staged release, and
are seeded from site-vars (site_name, blancco_wifi_ssid,
blancco_wifi_password) only while none exist. The repo XML carries no
site values; the plaintext Wi-Fi password is gone from it.

New site_name and site_timezone settings: report and evidence-pack site
name, server clock and webapp time zone. No more West Jefferson defaults
in webapp/config.py or the dashboard title. Sync-BPRT.ps1 gets the
server address filled in at download instead of WJ's GE address.

USB on Windows:
- scripts/Build-PxeUsb.ps1 runs the same checks as build-usb.sh. It
  writes one FAT32 CIDATA partition (ISO files plus patched grub.cfg plus
  payload) with diskpart and reads every file back by SHA-256.
- Tested with Windows PowerShell 5.1 in the win11 VM, and the layout
  installs and first-boots in the pxetest VM.
- scripts/stage-usb-share.sh stages the build folder on a share.
- site-content/ is optional for both builders.

KB docs/kb/How_To_Deploy_PXE_Server_New_Site.html: new-site deployment,
Windows only, with a site-vars.yml guide.

Checks: webapp tests pass (5 suites); the unattend lint and playbook
syntax checks pass; every .ps1 parses; there are no WJ hosts, IPs, names
or PC types in playbook/, webapp/, scripts/ or autoinstall/.

webapp/templates/_imaging_tiles.html

@@ -6,9 +6,9 @@
 {% import '_ui.html' as ui %}
 {% set stage_labels = {
     1: ('Booting from PXE',            'WinPE loaded - applying Windows image to disk.'),
-    2: ('Configuring Windows',         'First boot. Running shopfloor setup baseline scripts.'),
-    3: ('Installing apps',             'Type-specific app installs (eDNC, UDC, NTLARS, etc).'),
-    4: ('Apps installed',              'Type-specific scripts complete. Preparing for Intune enrollment.'),
+    2: ('Configuring Windows',         'First boot. Running shopfloor setup.'),
+    3: ('Installing site apps',        'The site app list (pre-install). Empty unless the site added apps.'),
+    4: ('Site apps done',              'Pre-install list complete. Preparing for Intune enrollment.'),
     5: ('Enrolling in Intune',         'PPKG installing - device joining Azure AD + Intune. ~5-10 min, reboot to follow.'),
     6: ('Waiting on first Intune sync','Post-PPKG settle (~120s). Triggering Schedule #3 sync repeatedly.'),
     7: ('Registered - assign category',