Followup to 654d923 (which moved the package from arborist/v8/ →
arborist/substrate/ at the file layer). The CLI surface still baked
in `v8` so a new operator running `--help` would see
``arborist v8 score`` and ask the same "what's v8 vs v9.8?"
naming-confusion question that drove the package rename in the
first place. Closing the loop end-to-end.
arborist/cli.py
===============
- Subparser renamed: ``"v8"`` → ``"substrate"``; help string updated
to "Merkle-AGI substrate primitives (ForkScore + future paper
specs)" so the dir name and command name and help text all align.
- Inner subparser dest renamed: ``v8_op`` → ``substrate_op``.
- Function renamed: ``_cmd_v8_score`` → ``_cmd_substrate_score``;
docstring updated.
- All ``v8_score`` local variables renamed to ``substrate_score``.
- New comment block above the subparser block explains the rename
+ why the v-prefix was retired (substrate-paper version vs v9.8
schema version naming collision).
The old ``arborist v8 score`` is gone — no alias preserved. CI + ops
scripts must update; today's earlier commit chain has been the only
place using it and that's been refreshed in lock-step.
tests/test_v8_fork_score.py
===========================
- 4 ``parser.parse_args(["v8", "score", ...])`` calls → ``["substrate", ...]``.
- 4 test functions renamed: ``test_cli_v8_score_*`` →
``test_cli_substrate_score_*``.
- Module docstring + section comment + helper docstring updated.
Filename intentionally kept as ``test_v8_fork_score.py`` for git
history continuity; pytest discovers by ``test_*`` content, not
filename. Renaming the file would muddle ``git log --follow`` for
the test surface.
Docs refreshed
==============
- docs/v8-fork-score.md — §5 CLI block invocation.
- docs/_source/v8-fork-score.rst — :code-block:: bash invocation.
- docs/_source/bench.rst — invocation in `### v8 ForkScore` section.
- docs/tickets/ticket-000012-selection-consensus-protocol.md —
three references in §7 close-out + §7 Phase 1c proposal +
§7 future-CLI-shape note.
- docs/dav1dprometheus-update-2026-05-09.md — bench journal mention.
Doc filenames (``v8-fork-score.{md,rst}``) kept stable since they
are URL identities; the file content explains the v8→substrate
rename internally. ``index.rst`` toctree references unchanged.
Hygiene
=======
- ``.venv/bin/arborist substrate score --help`` → 0 + valid usage.
- ``.venv/bin/arborist v8 score`` → exits non-zero (subcommand
removed, surfaced cleanly in ``argparse`` error).
- ``make test`` → 1643 passed, 45 skipped.
- ``make chain-check-shards`` → 0 across all 7 shards.
- fox's parallel work in arborist/qa/{runner,verify}.py +
arborist/qa/warrant_chain.py left untouched.
russell@unturf.com
bae5cafe9a