fix: react-doctor small categories 68→72 (a11y+perf+style, 21 fixes)

- no-outline-none (2): add focus-visible outline to inline-styled inputs
- no-redundant-roles (2): drop role="list" on <ul>
- click-events-have-key-events (2): convert div backdrops to buttons
- no-static-element-interactions (2): add role+tabIndex+onKeyDown to clickable divs
- rendering-svg-precision (2): round SVG path decimals
- no-tiny-text (2): 11px → 12px on CommandPalette hints
- js-set-map-lookups (4→1): Sets for visibleItems, regex for keyword match
- no-gray-on-colored-background (4): use color-matched text instead of stone-400/900
- no-transition-all (4): list specific properties in transition shorthand

src/components/admin/AdminSidebar.tsx

@@ -191,9 +191,10 @@ export default function AdminSidebar({
    * future iteration hides Harvest Reach for some role, the entire group
    * header goes away rather than rendering an empty section.
    */
+  const visibleItemSet = new Set(visibleItems);
   const visibleGroups: NavGroup[] = [];
   for (const group of NAV_GROUPS) {
-    const items = group.items.filter((item) => visibleItems.includes(item));
+    const items = group.items.filter((item) => visibleItemSet.has(item));
     if (items.length > 0) {
       visibleGroups.push({ ...group, items });
     }