feat(theme): R10 S1 — semantic status colors (danger/warn/success)

Add theme-scoped --danger/--warn/--success (+ -fg) tokens wired into the v4
@theme inline, replacing ~110 raw red/amber/emerald/green palette refs across
34 files. Fixes light-theme contrast failures (fixed Tailwind shades fell to
~1.7-3:1 on white). Status colors are scheme-independent — recognised by hue,
shifting only by theme to hold contrast (bright on dark bg, darkened on light).
Solid fills use the paired -fg text; @source inline guarantees the full -fg set
exists. IMDb rating gold kept as a deliberate decorative non-status exception.

frontend/src/components/SavedViewsWidget.tsx

@@ -331,7 +331,7 @@ function ViewRow({
         <button
           onClick={onDelete}
           title={t("views.delete")}
-          className="p-1 rounded-sm text-muted opacity-0 group-hover:opacity-100 group-focus-within:opacity-100 hover:text-red-400 transition"
+          className="p-1 rounded-sm text-muted opacity-0 group-hover:opacity-100 group-focus-within:opacity-100 hover:text-danger transition"
         >
           <Trash2 className="w-3.5 h-3.5" />
         </button>