No Rate Limiting on OAuth Endpoints(`apps/backend/src/routes/auth.ts`) - **Issue**: OAuth callback endpoints lack rate limiting; open to brute force and abuse. - **Fix**: Apply `@fastify/rate-limit` plugin to OAuth routes; add bucket strategy (per IP, per user).
No Rate Limiting on OAuth Endpoints(
apps/backend/src/routes/auth.ts)@fastify/rate-limitplugin to OAuth routes; add bucket strategy (per IP, per user).