Add offline IAM access key review helper

[lpg-it]

/claim #55

Scope

This is a separate Phase 6/9 offline IAM access-key review slice. It does not overlap with the existing Civil ID, S3 env, SQS, MediaConvert, SES/mailers, Xero, Cloudinary, secret-scanning, bucket-guardrail, service-token, CloudTrail, Slack, or recovery-audit PRs.

No live AWS/IAM calls, key rotation/deletion, bucket policy changes, candidate data, access keys, secret keys, account IDs, private exports, or raw CloudTrail records were accessed or included.

Summary

• add tools/audit-iam-access-keys.mjs, an offline CLI for maintainer-exported IAM access-key inventories
• match exposed suffixes such as DOBNJ/55KF/OFLT/XW5I/TMEZ while redacting full key IDs to suffix-only output
• report active exposed keys, inactive keys ready for evidence-backed deletion, stale active keys, unused active keys, and missing owner/service/environment metadata
• emit Markdown or CSV action plans for monthly IAM review and AWS Support evidence preparation
• add a synthetic fixture, a local regression check, and a runbook linked from the README

Validation

• node tools/check-iam-access-key-review.mjs
• node --check tools/audit-iam-access-keys.mjs
• node --check tools/check-iam-access-key-review.mjs
• git diff --check HEAD~1 HEAD

The regression check verifies that both Markdown and CSV reports include the expected remediation actions without leaking the synthetic full key IDs from the fixture.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 67f3df47-a39e-44b0-9165-f8fe7dc0cd43

📥 Commits

Reviewing files that changed from the base of the PR and between 7b023ff and c9717fb.

⛔ Files ignored due to path filters (1)

• tools/fixtures/iam-access-keys.sample.csv is excluded by !**/*.csv

📒 Files selected for processing (4)

• README.md
• docs/security/iam-access-key-review.md
• tools/audit-iam-access-keys.mjs
• tools/check-iam-access-key-review.mjs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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