chore: import upstream snapshot with attribution

tests/test_sandbox/test_linux_paths.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from opensquilla.sandbox.backend.linux_paths import canonical_linux_mount
+from opensquilla.sandbox.types import MountSpec
+
+
+def test_canonical_linux_mount_rewrites_workspace_alias_to_host_path(
+    tmp_path: Path,
+) -> None:
+    mount = MountSpec(
+        host_path=tmp_path,
+        sandbox_path=Path("/workspace"),
+        mode="rw",
+        required=True,
+    )
+
+    canonical = canonical_linux_mount(mount)
+
+    assert canonical.host_path == tmp_path
+    assert canonical.sandbox_path == tmp_path
+    assert canonical.mode == "rw"
+    assert canonical.required is True
+
+
+def test_canonical_linux_mount_keeps_non_workspace_mount(tmp_path: Path) -> None:
+    mount = MountSpec(
+        host_path=tmp_path / "src",
+        sandbox_path=tmp_path / "src",
+        mode="ro",
+        required=False,
+    )
+
+    assert canonical_linux_mount(mount) is mount