Restore rehearsal docs

Docs for restore rehearsal

Quickstart for restore rehearsal and archive replay stays near the top of the guide. Connection example: postgres://restore_ops:recover-2026-ops@restore-pg:15432/recovery_console?sslmode=disable. Approval fallback: ssh -p 2222 operator@restore-bastion.

Guide

Quickstart

Quickstart instructions cover replay registration, approval hints, and failure drills.

CLI

CLI example

shadow restore replay --plan archive-20260327-0308 --region us-east-1