identity-migration

Use when migrating legacy authentication to ASP.NET Core Identity with Entra ID, claims transformation, password hash compatibility, and hybrid auth flows. USE FOR: migrate ASP.NET Membership users, preserve legacy password verification, integrate Entra ID OIDC with Identity, convert roles to claims, plan hybrid local and Entra authentication. DO NOT USE FOR: non-.NET identity stacks, frontend-only login widgets, generic network access control.