## Change summary

Describe the registry, builder, validator, or migration behavior changed here.

## Cross-repository contract audit

- [ ] I inspected the private `DDS-Solutions/TadPole-OS` installer, loader, runtime type, security gates, and tests read-only before changing the contract.
- [ ] I recorded the reviewed private Tadpole-OS commit below and updated `COMPATIBILITY_MATRIX.md` if the accepted contract changed.
- [ ] I added or updated a failing characterization test before implementing a compatibility change.
- [ ] I ran the registry validator, migration check, Python tests, builder lint/tests, and production build.
- [ ] I confirmed new package files satisfy the source-only security policy and added adversarial coverage for any new security rule.

Reviewed private Tadpole-OS revision: `REPLACE_WITH_COMMIT_SHA`

Compatibility notes:

<!-- Explain why this remains compatible, including any intentional legacy behavior. -->
