Merge pull request #1095 from David-282/docs/903-production-runbook-rollback-hotfix

docs(ops): add production runbook for deployment rollback and hotfixe…

Author: Junirezz

docs/runbooks/rollback-and-hotfix.md

@@ -0,0 +1,25 @@
+# Production Runbook: Deployment Rollback & Hotfixes
+
+## 1. Trigger Criteria & Incident Severity
+
+### Severe Incidents (Triggers Rollback or Immediate Hotfix)
+- **Financial/State Risk:** Vault balance accounting mismatch, unauthorized yield distribution, or smart contract logic flaw.
+- **Service Outage:** Frontend or indexing API down/unresponsive post-deployment.
+- **Security Vulnerability:** Exploitable entrypoint or leaked credentials/keys.
+
+### Incident Roles
+- **Incident Commander (IC):** Leads response, authorizes pauses or rollbacks.
+- **Lead Developer:** Drafts hotfix or executes rollback commands.
+- **Verifier:** Runs post-deployment health checks before resolving incident.
+
+---
+
+## 2. Deployment Rollback Procedure
+
+### Phase A: Immediate Emergency Pause (Circuit Breaker)
+If the issue affects money movement or contract state, pause the contracts immediately.
+
+1. **Pause YieldVault Contracts:**
+   ```bash
+   # Run pause script or call pause method via CLI
+   cargo run -p scripts -- bin/pause_vault --network mainnet