select-waxtrace-asset.ps1: read bay-config.csv (17 bays) by default

Picker was still pointed at calibrations/INDEX.csv, which only listed
14 bays that have a per-asset cal ISO ripped. Three bays we just
refreshed into bay-config.csv (WJF00450, WJF00461, WJRP0423) had no
cal-disc entry, so they fell off the menu and tech had to drop to the
free-text prompt to type the asset by hand - felt like a regression.

Two changes:
- select-waxtrace-asset.ps1: prefer bay-config.csv when -IndexPath
  points there (now the default). Auto-detect schema by checking for
  the ftpak_version column. Display columns become
  ASSET / FTPAK / MODEL / USER ID so the tech can confirm bay metadata
  at a glance before pressing Enter. Falls back to
  calibrations/INDEX.csv if bay-config.csv missing.
- startnet.cmd: invoke the picker with -IndexPath bay-config.csv.

Pushed: both boot.wim copies refreshed via wimupdate, new
select-waxtrace-asset.ps1 deployed to PXE share, new boot.wim landed
at /var/www/html/win11/sources/boot.wim on 172.16.9.1.

bay-config.csv parent-dir copy synced with scripts/bay-config.csv so
resolve-bay-config.ps1 (called from startnet.cmd in WinPE) and the
picker both see the same 17-bay set.

playbook/startnet.cmd

@@ -214,7 +214,7 @@ REM net use Y: will be a no-op if Y: is already mapped.
 net use Y: \\172.16.9.1\enrollment /user:pxe-upload pxe /persistent:no >NUL 2>NUL
 del X:\waxtrace-asset.txt 2>NUL
 if not exist "Y:\installers-post\waxtrace\select-waxtrace-asset.ps1" goto waxtrace_picker_skip
-powershell.exe -NoProfile -ExecutionPolicy Bypass -File "Y:\installers-post\waxtrace\select-waxtrace-asset.ps1" -IndexPath "Y:\installers-post\waxtrace\calibrations\INDEX.csv" -OutFile "X:\waxtrace-asset.txt"
+powershell.exe -NoProfile -ExecutionPolicy Bypass -File "Y:\installers-post\waxtrace\select-waxtrace-asset.ps1" -IndexPath "Y:\installers-post\waxtrace\bay-config.csv" -OutFile "X:\waxtrace-asset.txt"
 :waxtrace_picker_skip
 set MACHINENUM=
 if exist X:\waxtrace-asset.txt set /p MACHINENUM=<X:\waxtrace-asset.txt