feat(agents): force agents to the Makefile — deny raw uv/pip/conda/poetry (CEO #15) (#518)

* fix(prompts): point agents at Makefile, drop raw uv run instructions

backend.md:23-26 literally instructed raw uv run ruff/mypy/pytest (copied from
the human-facing CLAUDE.md), so agents bypassed the Makefile's UV_NO_SYNC=1 +
private UV_CACHE_DIR venv-corruption guard. Replace with make targets across
backend/developer/qa/cell_pm + a universal rule in base.md. Regenerate verbs.md
from the updated regen script (baked instruction now make foundation-check) and
align the Makefile drift message. Ships with the bash-guard deny in the next
commit so agents don't loop fighting the guard.

* feat(bash-guard): deny raw uv/pip/conda/poetry, point at Makefile

When a Makefile is present, deny raw uv run/uv pip/uv lock/add/remove, pip/pip3
install/uninstall, conda install/create/run, poetry run/install/add and remediate
to make quality/gate/lint/test. Skipped when no Makefile (Makefile-less projects
not blocked). ROBOCO_GUARD_SKIP_PM=1 (grok path) nudges exit 0 instead of the
run-canceling exit 2. Overrides the prior bare-uv-run-allowed stance by CEO
direction; the /app-targeted blocks above keep priority.

* feat(grok): deny raw uv/pip/conda/poetry via native --deny + PM-skip nudge

Add _RAW_PM_DENY (uv run/pip install/lock/add/remove, pip/pip3 install, conda
install/create/run, poetry run/install/add) to _deny_rules so grok's graceful
native --deny blocks raw package-manager commands (model adapts to make, run
continues — unlike a hook deny which cancels the run). The bash-guard hook
keeps the compound-command fallback (cd x && uv run) and nudges exit 0 there via
ROBOCO_GUARD_SKIP_PM=1 in the grok hook env, never canceling.

* test(bash-guard): align existing tests with W1 Makefile-gate policy

Raw uv run / pip install are now Makefile-gated (W1, CEO item #15), so two
existing bash-guard invariants reverse:

- test_allows_pytest_even_if_suite_uses_requests keeps its HTTP-injection
  allow-path intent but uses bare `python -m pytest` (raw `uv run` is now
  denied); the deny case is covered by test_bash_guard_makefile_guardrail.
- test_allows_pip_install_in_workspace -> test_denies_pip_install_when_makefile_
  present: a workspace clone carries a Makefile, so bare pip install is now
  denied -> agents use `make` / `uv sync --extra dev`. Makefile-less skips
  stay covered.

Gate: 12994 passed, 439 skipped, 94.81% cov (DB env :55432 user renzof);
the lone flaky integration error passes in isolation (DB-state race, not W1).

---------

Co-authored-by: Renn F <rennf93@users.noreply.github.com>

agents/prompts/base.md

@@ -87,3 +87,7 @@ The briefing also carries `company_goals` — the company's charter (north star,
 ## Substitute reasons (for `i_am_blocked`)
 
 `low_context`, `out_of_scope_team`, `out_of_scope_role`, `task_complete`, `max_retries`, `blocked_external`.
+
+## Makefile is the gate surface
+
+Run `make <target>` for lint/test/typecheck — never raw `uv run`/`pip`/`conda`/`poetry`. The Makefile sets `UV_NO_SYNC=1` and a private `UV_CACHE_DIR` to prevent the concurrent-venv-corruption race; bare `uv run` bypasses both. Targets: `make quality` (full gate), `make gate` (fast pre-submit), `make lint`, `make test`, `make panel-gate` (frontend).