Add AWS Lambda Managed Instances power

[sbbhimji]

Summary

Adds a new power for AWS Lambda Managed Instances (LMI) — helping developers evaluate, configure, and migrate workloads to run Lambda functions on EC2 instances with AWS-managed provisioning, patching, scaling, and load balancing.

What's included

• POWER.md — Frontmatter, onboarding, decision framework, 6-step workflow, best practices, and limits reference
• steering/configuration-guide.md — Instance types, memory-to-vCPU ratios, concurrency tuning, scaling controls
• steering/cost-comparison.md — Pricing calculator guidance and when LMI is/isn't cost-effective
• steering/infrastructure-setup.md — IAM roles, VPC requirements, CLI commands, SAM template
• steering/migration-patterns.md — Before/after code examples for Node.js, Python, Java
• steering/thread-safety.md — Concurrency model per runtime, code review checklist, anti-patterns
• steering/troubleshooting.md — Common issues and debugging steps

Testing

Tested locally via Kiro Powers panel → Add power from Local Path.

References

• Lambda Managed Instances Docs
• LMI Samples Repository

[github-actions]

Hi @sbbhimji, thank you for your contribution!

Please note that if you haven't already, you would also need to submit your power officially at kiro.dev/powers/submit so it can be reviewed for listing in the Kiro powers registry.