Add “Escalate to Case” Backend Endpoint

[dshapi]

📁 #12 Feature: Add “Escalate to Case” Backend Endpoint

🧠 Context

No persistence for incidents.

🎯 Goal

Allow escalation into cases.

🛠️ Tasks

• Create /cases endpoint
• Store session + risk data

✅ Acceptance Criteria

• Cases can be created from simulations
• Data persisted

🏷️ Labels

backend