Rewrites AUTOSCALING.md — it was generic Cloudflare/Swarm advice that
predated the platform autoscaler. Now documents the real /scaling API,
per-service policy fields, manual scale, and the in-memory caveat.
Adds OPERATIONS.md covering cron jobs, exec console, managed databases,
preview environments (bookkeeping-only caveat), security scans
(heuristic, not Trivy), HA, and node-agent onboarding.
Authored By: TDvorak <[email protected]>
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
