test: isolate integration test home

Assisted-by: Codex (model: GPT-5, autonomous)

Author: PascalThuet

tests/integrations/conftest.py

@@ -1,8 +1,24 @@
 """Shared test helpers for integration tests."""
 
+import pytest
+
 from specify_cli.integrations.base import MarkdownIntegration
 
 
+@pytest.fixture(autouse=True)
+def _isolate_integration_home(monkeypatch: pytest.MonkeyPatch, tmp_path):
+    """Keep integration tests from reading or writing the real user home."""
+    home = tmp_path / "home"
+    for path in (home, home / ".cache", home / ".config", home / ".local" / "share"):
+        path.mkdir(parents=True, exist_ok=True)
+
+    monkeypatch.setenv("HOME", str(home))
+    monkeypatch.setenv("USERPROFILE", str(home))
+    monkeypatch.setenv("XDG_CACHE_HOME", str(home / ".cache"))
+    monkeypatch.setenv("XDG_CONFIG_HOME", str(home / ".config"))
+    monkeypatch.setenv("XDG_DATA_HOME", str(home / ".local" / "share"))
+
+
 class StubIntegration(MarkdownIntegration):
     """Minimal concrete integration for testing."""