route.ts: /api/log-error attributes client errors to view-as target instead of real actor

getSession() under active view-as returns the impersonated target's identity, not the real actor. /api/log-error uses session?.id instead of session.realUserId, so a client error hit while an admin is viewing-as is attributed to the student, not the admin. Fleet convention is realUserId everywhere else (log-ux-event, template.tsx, require-cap.ts, perfil/actions.ts, feedback-actions.ts — MARS-352 pattern). Fix: one-line swap to session.realUserId, copy existing precedent. Rows written wrong now are unrecoverable after the fact — take before the log-error silent-fail WI.