- exec_script: relay now enforces admin role before forwarding to agent
- relay CORS: restrict allow_origins via ALLOWED_ORIGINS env var (docker-compose passes app URL)
- session-code: replace Math.random() with crypto.randomInt, add per-key rate limit (10 req/min)
- sessions GET: fix IDOR — users can only read their own sessions (admins see all)
- signal API: validate session ownership on create; enforce ownerUserId on all subsequent actions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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