chore: import upstream snapshot with attribution

tests/test_wheel_packaging.py

@@ -0,0 +1,84 @@
+"""Packaging guard (#1121 follow-up): the 5 skillgen guards check the *repo tree*,
+not the *built wheel*. A host whose references bundle or always-on block fails to
+match the `package-data` globs would pass `--check`/`--audit-coverage` yet make
+`graphify install` hard-exit with "not found in package" for real users.
+
+This builds the wheel once and asserts every committed skill artifact ships in it.
+"""
+from __future__ import annotations
+
+import subprocess
+import sys
+import zipfile
+from pathlib import Path
+
+import pytest
+
+REPO = Path(__file__).resolve().parents[1]
+PKG = REPO / "graphify"
+
+
+def _has_build() -> bool:
+    try:
+        subprocess.run(
+            [sys.executable, "-m", "build", "--version"],
+            check=True, capture_output=True,
+        )
+        return True
+    except (subprocess.CalledProcessError, FileNotFoundError):
+        return False
+
+
+def _skill_bodies() -> list[Path]:
+    """Every distinct skill body a platform installs (the SKILL.md is copied from
+    one of these). A body missing from the wheel makes `graphify install
+    --platform <host>` hard-exit "not found in package" — the exact failure that
+    motivated adding the agents platform's skill-agents.md to package-data."""
+    from graphify.__main__ import _PLATFORM_CONFIG
+
+    names = {cfg["skill_file"] for cfg in _PLATFORM_CONFIG.values()}
+    return sorted({PKG / name for name in names})
+
+
+def _expected_artifacts() -> list[Path]:
+    """Every committed skill body + references/*.md (per host) + always_on/*.md block."""
+    bodies = _skill_bodies()
+    refs = sorted((PKG / "skills").glob("*/references/*.md"))
+    always = sorted((PKG / "always_on").glob("*.md"))
+    # Sanity: if these are empty the test wiring is broken, not the wheel.
+    assert bodies, "no platform skill bodies found — packaging test mis-wired"
+    assert refs, "no skills/*/references/*.md found in repo — packaging test mis-wired"
+    assert always, "no always_on/*.md found in repo — packaging test mis-wired"
+    return bodies + refs + always
+
+
+@pytest.fixture(scope="module")
+def wheel_namelist(tmp_path_factory) -> set[str]:
+    if not _has_build():
+        pytest.skip("`python -m build` unavailable (dev extra not installed)")
+    out = tmp_path_factory.mktemp("wheel")
+    proc = subprocess.run(
+        [sys.executable, "-m", "build", "--wheel", "--no-isolation",
+         "--outdir", str(out), str(REPO)],
+        capture_output=True, text=True,
+    )
+    if proc.returncode != 0:
+        pytest.skip(f"wheel build failed in this env:\n{proc.stderr[-800:]}")
+    wheels = list(out.glob("graphifyy-*.whl"))
+    assert wheels, "no wheel produced"
+    with zipfile.ZipFile(max(wheels, key=lambda p: p.stat().st_mtime)) as z:
+        return set(z.namelist())
+
+
+@pytest.mark.parametrize(
+    "artifact",
+    _expected_artifacts(),
+    ids=lambda p: str(p.relative_to(PKG)),
+)
+def test_skill_artifact_ships_in_wheel(artifact: Path, wheel_namelist: set[str]) -> None:
+    rel = "graphify/" + artifact.relative_to(PKG).as_posix()
+    assert rel in wheel_namelist, (
+        f"{rel} is committed in the repo but NOT in the built wheel — "
+        f"`graphify install` would hard-exit for this host. Check the "
+        f"[tool.setuptools.package-data] globs in pyproject.toml."
+    )