Feat(Chore): Verify Flow, Invites, Suspend, Depart Cert Policy

feat: add password reset and email verification flow
feat: add org invite listing, cancellation, and invite link fallback
feat: add user suspend/unsuspend with audit logging
feat: add department certificate policy (expiry, extensions)
feat: enforce dept cert policy on SSH certificate signing
feat: wire up OIDC consent and token flow (replace mocks)
feat: rework CLI auth bridge to use frontend login flow
feat: add admin OAuth provider management (CRUD)
chore: refactor model import paths after module reorganisation
chore: clean up config, decorators, and dev tooling

gatehouse_app/services/user_service.py

@@ -2,7 +2,7 @@
 import logging
 from flask import current_app
 from gatehouse_app.extensions import db
-from gatehouse_app.models.user import User
+from gatehouse_app.models.user.user import User
 from gatehouse_app.exceptions.validation_exceptions import UserNotFoundError
 from gatehouse_app.utils.constants import AuditAction
 from gatehouse_app.services.audit_service import AuditService