Add aws-ecs-operations-review skill

[shyamkulkarni]

Summary

Adds a new ECS Operations Review skill (skills/aws-ecs-operations-review) that performs a comprehensive Amazon ECS operations review across 6 review pillars:

• Resiliency & HA (REL)
• Observability (OBS)
• Security (SEC)
• Operations (OPS)
• Performance (PERF)
• Additional Analysis (ADD)

Key features

• Strictly read-only — uses only describe* / list* / get* APIs (ECS, CloudWatch, IAM, Application Auto Scaling, ELB, ECR, EC2, GuardDuty, Compute Optimizer); remediations are drafted for human approval, never applied
• 7-day CloudWatch metrics baseline per service
• Compute-platform-aware check applicability (Fargate, Fargate Spot, EC2 ASG capacity providers, ECS Managed Instances, ECS Anywhere)
• Per-pillar PASS/FAIL/N/A scorecards with evidence and severity
• Recommended CloudWatch alarm thresholds for IDR onboarding
• Prioritized, remediation-linked report artifact per service
• Graceful degradation: non-Tier-1 access errors mark dependent checks N/A and the review continues

Contents

• SKILL.md with frontmatter metadata (version, author, agent types)
• README.md with usage docs and non-production disclaimer
• CHANGELOG.md
• references/ — checks index, per-pillar check definitions, alarm thresholds, report format
• evals/ — functional evals (evals.json) and trigger tests (eval_queries.json)
• .skilleval.yaml for Agent Skill Eval
• llms.txt entry added

Testing

• Skill structure follows the repo contribution guidelines (SKILL.md + references + evals)
• Eval queries and functional evals included under evals/