MoonRetentionKit

MoonBit data retention, expiry, purge planning, and legal-hold decision primitives.

See README.mbt.md.

MoonRetentionKit is not a file deletion script. It is a backend-neutral decision core for data lifecycle governance: given dataset metadata, retention rules, idle windows, and active legal holds, it produces keep, review, purge, or hold decisions plus a batch-level purge plan.

The project is useful for services that must explain and audit why data can or cannot be deleted before touching object storage, databases, log archives, test exports, or analytics datasets.

It also includes a policy audit layer that can fail risky retention configurations before deployment, including missing class rules, unsafe review windows, idle-window mistakes, and personal-data retention below a configured floor.

Key materials:

• README.mbt.md: package documentation and API examples.
• docs/RELATED_WORK.md: differences from mature lifecycle systems and MoonBit community packages.
• docs/ACCEPTANCE.md: implemented scope and review checklist.