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>

tests/unit/runtime/test_bash_guard_makefile_guardrail.py

@@ -0,0 +1,86 @@
+"""bash-guard Makefile guardrail — deny raw uv/pip/conda/poetry, point at make.
+
+CEO item: force agents to the Makefile. The existing hook deliberately allowed
+bare ``uv run`` (workspace .venv, cwd-relative); this guard overrides that by
+CEO direction when a ``Makefile`` is present, denying raw package-manager /
+test-runner commands and remediating to the make targets. Skipped when no
+Makefile exists so Makefile-less projects aren't blocked. On the grok path
+(``ROBOCO_GUARD_SKIP_PM=1``) a deny cancels the whole run, so it nudges (exit 0)
+instead.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import subprocess
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[3]
+HOOK = REPO_ROOT / "docker" / "scripts" / "bash-guard-hook.sh"
+
+# Hook exits 2 to deny, 0 to allow. Named (not magic) for ruff PLR2004.
+_DENIED = 2
+_ALLOWED = 0
+
+
+def _run_hook(
+    command: str, cwd: Path, env_over: dict[str, str] | None = None
+) -> tuple[int, str]:
+    payload = json.dumps({"tool_input": {"command": command}})
+    env = dict(os.environ)
+    if env_over:
+        env.update(env_over)
+    proc = subprocess.run(
+        ["bash", str(HOOK)],
+        input=payload,
+        capture_output=True,
+        text=True,
+        cwd=str(cwd),
+        env=env,
+        check=False,
+    )
+    return proc.returncode, proc.stderr
+
+
+def test_denies_uv_run_when_makefile_present() -> None:
+    rc, err = _run_hook("uv run pytest", REPO_ROOT)
+    assert rc == _DENIED
+    assert "make" in err.lower()
+
+
+def test_denies_pip_install() -> None:
+    rc, _ = _run_hook("pip install requests", REPO_ROOT)
+    assert rc == _DENIED
+
+
+def test_denies_compound_uv_run() -> None:
+    rc, _ = _run_hook("cd svc && uv run ruff check .", REPO_ROOT)
+    assert rc == _DENIED
+
+
+def test_denies_conda_and_poetry() -> None:
+    assert _run_hook("conda install numpy", REPO_ROOT)[0] == _DENIED
+    assert _run_hook("poetry run pytest", REPO_ROOT)[0] == _DENIED
+
+
+def test_allows_make_quality() -> None:
+    rc, _ = _run_hook("make quality", REPO_ROOT)
+    assert rc != _DENIED
+
+
+def test_allows_pnpm() -> None:
+    rc, _ = _run_hook("pnpm lint", REPO_ROOT)
+    assert rc != _DENIED
+
+
+def test_skips_deny_without_makefile(tmp_path: Path) -> None:
+    rc, _ = _run_hook("uv run pytest", tmp_path)
+    assert rc != _DENIED
+
+
+def test_grok_path_nudges_not_denies() -> None:
+    """ROBOCO_GUARD_SKIP_PM=1 (grok) -> exit 0 nudge, not run-canceling exit 2."""
+    rc, err = _run_hook("uv run pytest", REPO_ROOT, {"ROBOCO_GUARD_SKIP_PM": "1"})
+    assert rc == _ALLOWED
+    assert "make" in err.lower()