Merge duplicate user accounts by email — management command, auth backend, and registration guard - #5

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SpiderQubit with Copilot wants to merge 3 commits into

copilot/merge-users-by-email

Commits on Jul 18, 2026

Add merge_users_by_email management command, email/username auth backend, and duplicate email prevention

Copilot
and
SpiderQubit
committed
a8df36f
Address code review feedback: use exact username match in auth backend, exclude inactive users in registration check, narrow exception handling in email sending

Copilot
and
SpiderQubit
committed
dbc6775
Add email/username login backend and fix cas_ng_login redirect
SpiderQubit
committed
5b08175