Fix CI: use dynamic HOME in allowlist test

The test hardcoded /home/vscode but CI runs as /home/runner.
Use the module's _home variable to match the actual environment.

Author: AnExiledDev

tests/plugins/test_guard_workspace_scope.py

@@ -66,10 +66,10 @@ class TestIsAllowlisted:
     @pytest.mark.parametrize(
         "path, expected",
         [
-            ("/home/vscode/.claude/rules/foo.md", True),
+            (f"{guard_workspace_scope._home}/.claude/rules/foo.md", True),
             ("/tmp/scratch.txt", True),
             ("/workspaces/proj/file", False),
-            ("/home/vscode/.ssh/id_rsa", False),
+            (f"{guard_workspace_scope._home}/.ssh/id_rsa", False),
         ],
         ids=[
             "claude_config_dir",