# Slice 67 - Next Agent Brief Freshness

Date: 2026-06-30

## Scope

Keep `docs/python-port/next-agent-brief.md` aligned with the newest Python port
slice before future agents resume from a compacted context.

## Finding

The next-agent brief had accumulated useful current-state detail, but its top
checkpoint still said the latest implementation slice was slice 62 after slices
63 through 66 had already landed. The worklog and verification notes were
newer, so the issue was not missing history; it was an unguarded recovery
summary.

## Decision

The next-agent brief now states the latest implementation slice directly in the
current-state section. Public-contract tests discover the highest
`docs/python-port/slice-N-*.md` file and require that section to mention the
matching slice number.

## Guard

`tests/test_public_contract.py` now includes
`test_next_agent_brief_tracks_latest_python_port_slice()`.

## Cosmic Python Note

Chapter 4 frames the service layer as the main way into an application's use
cases. The transfer here is test shape: the test drives the public steering
contract directly instead of checking incidental markdown fragments elsewhere.
