Xcode 26.0 through 26.6 fails to open on M2 MacBook Air with Tahoe 26.6.1

Developer Tools & Services Xcode Xcode

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Everything has been updated. Countless reboots and reinstalls. Yet Xcode still won't open. Keep getting "Xcode quit unexpectedly dialog" with buttons to Reopen, Ignore, Report.

Any suggestions on what lingering file is killing Xcode on open?

Thanks!