root 80dd9d0a8b feat(auth): OIDC link by preferred_username (opt-in) ...

Adds OIDC_LINK_BY_USERNAME as a last-resort linking step after
(issuer, sub) and email both miss. Matches IdP preferred_username
against users.username.

Why: local accounts created before OIDC never collected an email
(no UI for it), so the email fallback cannot relink them. A new
SSO login therefore falls into JIT and creates username-1. On a
single-tenant homelab where the IdP owns the namespace, matching
by username is safe and makes first-time SSO transparent for
pre-existing users. Gated behind a flag so multi-tenant deployments
keep the stricter default.

2026-04-22 22:24:13 +02:00

8.4 KiB

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