chore: init from code-review-graph-main snapshot (v2.3.7)

tests/conftest.py

@@ -0,0 +1,36 @@
+"""Shared test fixtures.
+
+Keeps code-review-graph's own per-user state out of the developer's real
+home directory. Scoped deliberately: the editor-integration installers in
+``skills.py`` write to other user-level locations (``~/.codex``,
+``~/.cursor``, ``~/.config/opencode``) that are outside CRG state and are
+not covered here — those tests patch ``Path.home()`` themselves.
+"""
+
+from __future__ import annotations
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def isolated_crg_home(tmp_path_factory, monkeypatch):
+    """Redirect the per-user state directory into a temporary directory.
+
+    ``~/.code-review-graph`` holds ``registry.json``, ``watch.toml``,
+    ``daemon.pid``, ``daemon-state.json`` and ``logs/``. Two paths reached
+    the real one:
+
+    * ``Registry()`` defaults there, and ``incremental.get_data_dir()``
+      constructs one internally — so any test touching data-dir resolution
+      both read and wrote the registry of whoever ran the suite. That put
+      pytest tmp paths into a developer's home directory, and made those
+      tests depend on machine state: a developer with a registered repo
+      could get different results from one without.
+    * ``daemon`` built its config/PID/state paths from ``Path.home()``.
+
+    Autouse and unconditional: an opt-in fixture would silently stop
+    protecting a test the day someone forgets to request it.
+    """
+    home = tmp_path_factory.mktemp("crg-home")
+    monkeypatch.setenv("CRG_HOME", str(home))
+    return home