The width-adaptive fallback moved the switcher OUT of the pane on narrow windows, and in
the pane it could still clip — both read as broken. Now the nav is the switcher's only
home: `Left` mode (always-expanded 280 pane, combo sized to fit) while the content column
gets a workable width, and below that a `LeftCompact` rail whose footer swaps to a fitting
compact form — a 40-square monogram disc for the scope (profile accent when set) instead
of a clipped ComboBox. The disc opens the profile sheet, which in compact mode carries the
scope combo too (keyed per scope against the items/selected_index diff hazard), so
switching, creating, and editing profiles all stay reachable from the rail. The inline
content-column fallback is gone.
UIA-verified on the expanded path: scope pick from the pane, Overridden marker 5 -> 6 in
place, sheet opens and closes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>