The Desktop AUX_TASKS registry drifted from web_server._AUX_TASK_SLOTS:
triage_specifier, kanban_decomposer, and profile_describer were served by
the backend (stale-aux warnings referenced them) but had no row in
Settings > Models > Auxiliary models, leaving "Reset all to main" as the
only way to change them. Add the three rows with localized labels/hints
(en/ar/ja/zh/zh-hant) mirroring the CLI _AUX_TASKS descriptions, and pin
the rendered set with test assertions.
Fixes#97297
liuhao1024
ff1e0f0d52