Users can't always paste logs, so capture install-relevant system state in
telemetry instead. New Get-OfficeState (ProductReleaseIds, Office root-folder
count, reboot-signal breakdown cbs/wu/officePFRO, ClickToRun service, ospp
presence) is sent (1) BEFORE the install (ships before the ~3 GB download, so a
failure is debuggable even if aborted) and (2) on ODT failure alongside a
tightened ODT error tail. Stop dumping the verbose C2R log to the screen.
Scrub COMPUTERNAME/USERNAME from all telemetry (a C2R log filename leaked the
machine name) and raise the detail cap 600->1800.
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