# Reliability Simulation & Disaster Recovery Twin

Webdev Agent OS v18 extends the Runtime Resilience Mesh with a recovery-oriented digital twin. It models workload and failure pressure, verifies backup evidence, rehearses restoration in isolated environments, measures recovery objectives, and governs disaster actions through independent review.

## Operating chain

1. Define workload and capacity models.
2. Create isolated failure scenarios.
3. Run deterministic simulations and record bottlenecks.
4. Register backups without storing provider credentials.
5. Verify checksums, encryption, immutability, age, and evidence.
6. Restore verified backups into shadow environments.
7. Measure actual RTO, RPO, integrity, and rollback readiness.
8. Approve recovery plans independently.
9. Execute bounded disaster game days.
10. Compare recovery architectures by speed, protection, reliability, cost, simplicity, and reversibility.
11. Convert failures into recovery campaigns.

## Core records

- Recovery programs
- Workload models
- Failure and load scenarios
- Simulation runs
- Backup assets
- Shadow restore rehearsals
- Recovery plans and runbooks
- Disaster game days
- Recovery architecture tournaments
- Readiness campaigns
- Decisions and activity history

## Evidence boundary

The starter dataset is illustrative. Registered backup locations, regions, runbooks, and simulations are not proof that a cloud provider, database, traffic router, or production environment has been connected. Live adapters must preserve the same evidence and approval contracts.

## Production restrictions

The system may calculate and recommend automatically. It may not silently delete data, alter backups, shift production traffic, perform regional evacuation, restore over a live database, or declare recovery complete without reviewer evidence.