- Add validatePortalSession middleware that reads X-Impersonation-Session-Id header,
queries impersonationSessions, and sets portalClientId + portalSessionId on the context
- Add portalAudit middleware that logs all portal requests to impersonationAuditLogs table
- Apply both middlewares to the portalRouter
- Replace all getClientIdFromSession() calls with c.get("portalClientId")
- Remove getClientIdFromSession() helper and inline session checks in waitlist routes
- Consistent session.expiry > new Date() check across all routes
Co-Authored-By: Paperclip <noreply@paperclip.ing>