docs(devguide): file the xdist warning report under the reporting protocol

The report was committed without an issue, against reporting_protocol.md, and
with `status: guarded`, which is not one of the seven values that document
defines. Both corrected: the theme is #158, and the state is
`blocked`, on the upstream fix proposed as pytest-dev/pytest-xdist#1372 — which
the acceptance section now names, so a reader can follow it without leaving the
document.

`area` moves from the invented `test-tooling` to `tests`, which the rest of the
queue already uses, and `verification` from `measured` to `reproduced`, which is
what actually happened: serial and parallel runs of the same tests differ.

Index regenerated with devtools/scripts/devguide_index.py rather than by hand;
`--check` had been reporting it stale since the report landed.

Author: dprada

devguide/pending_bugs/README.md

@@ -20,6 +20,11 @@ that front matter -- edit the entries, not this list.
 
 <!-- generated: devguide_index -->
 
+### Blocked (1)
+
+- [`xdist_re_renders_catalog_warnings_on_the_controller.md`](xdist_re_renders_catalog_warnings_on_the_controller.md) — [#158](https://github.com/uibcdf/molsysmt/issues/158) — Under pytest-xdist the controller rebuilds catalog warnings as cls(rendered_text), so the template renders around its own output a second time. *(low, reproduced)*
+  Blocked by pytest-dev/pytest-xdist#1372.
+
 ### Partially resolved (2)
 
 - [`form_attributes_declared_without_getters.md`](form_attributes_declared_without_getters.md) — [#139](https://github.com/uibcdf/molsysmt/issues/139) — Forms declare attributes for which no getter or pipe can deliver a value. *(medium, measured)*

devguide/pending_bugs/xdist_re_renders_catalog_warnings_on_the_controller.md

@@ -1,15 +1,15 @@
 ---
 summary: Under pytest-xdist the controller rebuilds catalog warnings as cls(rendered_text), so the template renders around its own output a second time.
-issue:
-status: guarded
+issue: uibcdf/molsysmt#158
+status: blocked
 opened: 2026-08-16
 closed:
 severity: low
-verification: measured
-area: [test-tooling, diagnostics]
+verification: reproduced
+area: [tests, diagnostics]
 guard: conftest.py::_guard_xdist_warning_reconstruction
 normative:
-blocked_by: []
+blocked_by: [pytest-dev/pytest-xdist#1372]
 supersedes: []
 ---
 
@@ -91,6 +91,8 @@ message, which is wrong without looking wrong.
 ## Acceptance
 
 Remove the guard when a released `pytest-xdist` no longer rebuilds warnings this
-way. The test that fails if the defect returns is any parallel run of
+way. The fix is proposed upstream as `pytest-dev/pytest-xdist#1372`: keep the
+rebuilt instance only when it still says what the original said, otherwise take
+the fallback xdist already has for warnings it could not recreate. The test that fails if the defect returns is any parallel run of
 `tests/element/atom/test_get_atom_type_from_atom_name.py` whose reported warning
 text differs from the serial run's.