## Summary
- add `latest-known` as an explicit version selector
- resolve it locally to the newest version in the bundled checksum table
- preserve existing default and `latest` behavior
- document custom-manifest checksum semantics and update published
bundles
## Testing
- `npm ci --ignore-scripts`
- `npm run all` (99 tests passed)
Closes#919
Refs: pi-session 019fed0e-6019-7504-911b-bd9955cbbd49
