feat: add migration-architect POWERFUL-tier skill

engineering/migration-architect/expected_outputs/sample_database_migration_plan.txt

@@ -0,0 +1,161 @@
+================================================================================
+MIGRATION PLAN: 23a52ed1507f
+================================================================================
+Source System: PostgreSQL 13 Production Database
+Target System: PostgreSQL 15 Cloud Database
+Migration Type: DATABASE
+Complexity Level: CRITICAL
+Estimated Duration: 95 hours (4.0 days)
+Created: 2026-02-16T13:47:23.704502
+
+MIGRATION PHASES
+----------------------------------------
+1. PREPARATION (19h)
+   Description: Prepare systems and teams for migration
+   Risk Level: MEDIUM
+   Tasks:
+     • Backup source system
+     • Set up monitoring and alerting
+     • Prepare rollback procedures
+     • Communicate migration timeline
+     • Validate prerequisites
+   Success Criteria:
+     ✓ All backups completed successfully
+     ✓ Monitoring systems operational
+     ✓ Team members briefed and ready
+     ✓ Rollback procedures tested
+
+2. EXPAND (19h)
+   Description: Execute expand phase
+   Risk Level: MEDIUM
+   Dependencies: preparation
+   Tasks:
+     • Complete expand activities
+   Success Criteria:
+     ✓ Expand phase completed successfully
+
+3. MIGRATE (19h)
+   Description: Execute migrate phase
+   Risk Level: MEDIUM
+   Dependencies: expand
+   Tasks:
+     • Complete migrate activities
+   Success Criteria:
+     ✓ Migrate phase completed successfully
+
+4. CONTRACT (19h)
+   Description: Execute contract phase
+   Risk Level: MEDIUM
+   Dependencies: migrate
+   Tasks:
+     • Complete contract activities
+   Success Criteria:
+     ✓ Contract phase completed successfully
+
+5. CLEANUP (19h)
+   Description: Execute cleanup phase
+   Risk Level: MEDIUM
+   Dependencies: contract
+   Tasks:
+     • Complete cleanup activities
+   Success Criteria:
+     ✓ Cleanup phase completed successfully
+
+RISK ASSESSMENT
+----------------------------------------
+CRITICAL SEVERITY RISKS:
+  • Insufficient rollback testing
+    Category: operational
+    Probability: high | Impact: critical
+    Mitigation: Execute full rollback procedures in staging environment
+    Owner: QA Team
+
+HIGH SEVERITY RISKS:
+  • Data corruption during migration
+    Category: technical
+    Probability: low | Impact: critical
+    Mitigation: Implement comprehensive backup and validation procedures
+    Owner: DBA Team
+
+  • Extended downtime due to migration complexity
+    Category: technical
+    Probability: medium | Impact: high
+    Mitigation: Use blue-green deployment and phased migration approach
+    Owner: DevOps Team
+
+  • Business process disruption
+    Category: business
+    Probability: medium | Impact: high
+    Mitigation: Communicate timeline and provide alternate workflows
+    Owner: Business Owner
+
+  • Zero-downtime requirement increases complexity
+    Category: business
+    Probability: high | Impact: medium
+    Mitigation: Implement blue-green deployment or rolling update strategy
+    Owner: DevOps Team
+
+  • Regulatory compliance requirements
+    Category: compliance
+    Probability: medium | Impact: high
+    Mitigation: Ensure all compliance checks are integrated into migration process
+    Owner: Compliance Team
+
+ROLLBACK STRATEGY
+----------------------------------------
+Rollback Triggers:
+  • Critical system failure
+  • Data corruption detected
+  • Migration timeline exceeded by > 50%
+  • Business-critical functionality unavailable
+  • Security breach detected
+  • Stakeholder decision to abort
+
+Rollback Phases:
+  CLEANUP:
+    - Revert cleanup changes
+    - Restore pre-cleanup state
+    - Validate cleanup rollback success
+    Estimated Time: 285 minutes
+
+  CONTRACT:
+    - Revert contract changes
+    - Restore pre-contract state
+    - Validate contract rollback success
+    Estimated Time: 285 minutes
+
+  MIGRATE:
+    - Revert migrate changes
+    - Restore pre-migrate state
+    - Validate migrate rollback success
+    Estimated Time: 285 minutes
+
+  EXPAND:
+    - Revert expand changes
+    - Restore pre-expand state
+    - Validate expand rollback success
+    Estimated Time: 285 minutes
+
+  PREPARATION:
+    - Revert preparation changes
+    - Restore pre-preparation state
+    - Validate preparation rollback success
+    Estimated Time: 285 minutes
+
+SUCCESS CRITERIA
+----------------------------------------
+✓ All data successfully migrated with 100% integrity
+✓ System performance meets or exceeds baseline
+✓ All business processes functioning normally
+✓ No critical security vulnerabilities introduced
+✓ Stakeholder acceptance criteria met
+✓ Documentation and runbooks updated
+
+STAKEHOLDERS
+----------------------------------------
+• Business Owner
+• Technical Lead
+• DevOps Team
+• QA Team
+• Security Team
+• End Users