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+# Phase 14 - Parent Commit Verification
+
+**Track:** live_gui_test_fixes_20260618
+**Date:** 2026-06-18
+**Investigator:** Tier 2 Tech Lead (autonomous run)
+
+## Conclusion
+
+Issue 2 (`test_live_gui_workspace_exists` xdist race) is confirmed as a
+**pre-existing race condition** on the parent commit `4ab7c732`. It is
+NOT a regression introduced by Phase 12 (or any subsequent Result[T]
+migration work).
+
+## Test Run on Parent Commit 4ab7c732 (in isolation)
+
+```
+uv run pytest tests/test_live_gui_workspace_fixture.py::test_live_gui_workspace_exists -v --timeout=120
+```
+
+Result: **PASSED in 2.84s**
+
+This confirms the spec's claim. The xdist race only manifests in batched
+parallel runs (where multiple workers share the workspace path and the
+owner's teardown can race with a client's test execution).
+
+## The xdist race
+
+The `live_gui_workspace` fixture returns `live_gui.workspace` (a single
+shared path `_RUN_WORKSPACE = Path(f"tests/artifacts/live_gui_workspace_{_RUN_ID}")`).
+The owner worker's `live_gui` fixture teardown runs `shutil.rmtree(temp_workspace)`
+when the owner worker's session ends. In xdist mode, this can happen
+before client workers have completed their tests, leaving the workspace
+missing when client tests assert `live_gui_workspace.exists()`.
+
+## The fix
+
+The `live_gui_workspace` fixture must ensure the workspace exists by
+calling `mkdir(parents=True, exist_ok=True)` on the path before returning
+it. This makes the fixture resilient to concurrent teardown by other
+workers.
+
+---
+
+## Raw test output
+
+```
+============================= test session starts =============================
+platform win32 -- Python 3.11.6, pytest-9.1.0, pluggy-1.6.0 -- C:\projects\manual_slop_tier2\.venv\Scripts\python.exe
+cachedir: .pytest_cache
+rootdir: C:\projects\manual_slop_tier2
+configfile: pyproject.toml
+plugins: anyio-4.14.0, asyncio-4.0.0, cov-7.1.0, timeout-2.4.0, xdist-3.8.0
+asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
+timeout: 120.0s
+timeout method: thread
+timeout func_only: False
+collecting ... collected 1 item
+
+tests/test_live_gui_workspace_fixture.py::test_live_gui_workspace_exists PASSED [100%]
+
+============================== warnings summary ===============================
+src\gui_2.py:2191
+  C:\projects\manual_slop_tier2\src\gui_2.py:2191: DeprecationWarning: invalid escape sequence '\p'
+    """Renders the project configuration panel. Allows setting execution mode,
+
+src\gui_2.py:2297
+  C:\projects\manual_slop_tier2\src\gui_2.py:2297: DeprecationWarning: invalid escape sequence '\p'
+    """Renders the System Path Configuration panel. Shows source-tagged logs and scripts
+
+src\gui_2.py:5964
+  C:\projects\manual_slop_tier2\src\gui_2.py:5964: DeprecationWarning: invalid escape sequence '\p'
+    """
+
+-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
+======================== 1 passed, 3 warnings in 2.84s ========================
+```