feat: add autocomplete to settings search

- Show dropdown with top 8 matching settings while typing
- Search by key, name, translated name, description and category
- Display setting name and category in suggestions
- Keyboard navigation (arrows, Enter, Escape)
- On select: switch to correct section and filter by setting key
- Works on both desktop and mobile

src/components/admin/SettingsSearch.tsx

@@ -1,54 +1,222 @@
+import { useState, useRef, useEffect } from 'react';
 import { useTranslation } from 'react-i18next';
+import { SettingDefinition } from '../../api/adminSettings';
 import { SearchIcon, CloseIcon } from './icons';
+import { formatSettingKey } from './utils';
 
 interface SettingsSearchProps {
   searchQuery: string;
   setSearchQuery: (query: string) => void;
   resultsCount?: number;
+  allSettings?: SettingDefinition[];
+  onSelectSetting?: (setting: SettingDefinition) => void;
 }
 
-export function SettingsSearch({ searchQuery, setSearchQuery }: SettingsSearchProps) {
+export function SettingsSearch({
+  searchQuery,
+  setSearchQuery,
+  allSettings,
+  onSelectSetting,
+}: SettingsSearchProps) {
   const { t } = useTranslation();
+  const [isOpen, setIsOpen] = useState(false);
+  const [highlightedIndex, setHighlightedIndex] = useState(0);
+  const containerRef = useRef<HTMLDivElement>(null);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  // Filter settings for autocomplete
+  const suggestions =
+    searchQuery.trim() && allSettings
+      ? allSettings
+          .filter((s) => {
+            const q = searchQuery.toLowerCase().trim();
+            if (s.key.toLowerCase().includes(q)) return true;
+            if (s.name?.toLowerCase().includes(q)) return true;
+            const formattedKey = formatSettingKey(s.name || s.key);
+            const translatedName = t(`admin.settings.settingNames.${formattedKey}`, formattedKey);
+            if (translatedName.toLowerCase().includes(q)) return true;
+            if (s.hint?.description?.toLowerCase().includes(q)) return true;
+            const categoryLabel = t(`admin.settings.categories.${s.category.key}`, s.category.key);
+            if (categoryLabel.toLowerCase().includes(q)) return true;
+            return false;
+          })
+          .slice(0, 8)
+      : [];
+
+  // Close on click outside
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      if (containerRef.current && !containerRef.current.contains(e.target as Node)) {
+        setIsOpen(false);
+      }
+    };
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => document.removeEventListener('mousedown', handleClickOutside);
+  }, []);
+
+  // Reset highlighted index when suggestions change
+  useEffect(() => {
+    setHighlightedIndex(0);
+  }, [suggestions.length, searchQuery]);
+
+  const handleKeyDown = (e: React.KeyboardEvent) => {
+    if (!isOpen || suggestions.length === 0) return;
+
+    switch (e.key) {
+      case 'ArrowDown':
+        e.preventDefault();
+        setHighlightedIndex((i) => (i + 1) % suggestions.length);
+        break;
+      case 'ArrowUp':
+        e.preventDefault();
+        setHighlightedIndex((i) => (i - 1 + suggestions.length) % suggestions.length);
+        break;
+      case 'Enter':
+        e.preventDefault();
+        if (suggestions[highlightedIndex]) {
+          handleSelect(suggestions[highlightedIndex]);
+        }
+        break;
+      case 'Escape':
+        setIsOpen(false);
+        inputRef.current?.blur();
+        break;
+    }
+  };
+
+  const handleSelect = (setting: SettingDefinition) => {
+    setIsOpen(false);
+    setSearchQuery(setting.name || setting.key);
+    onSelectSetting?.(setting);
+  };
+
+  const getSettingDisplayName = (setting: SettingDefinition) => {
+    const formattedKey = formatSettingKey(setting.name || setting.key);
+    return t(`admin.settings.settingNames.${formattedKey}`, formattedKey);
+  };
 
   return (
-    <>
-      {/* Search - desktop */}
-      <div className="relative hidden sm:block">
-        <input
-          type="text"
-          value={searchQuery}
-          onChange={(e) => setSearchQuery(e.target.value)}
-          placeholder={t('admin.settings.searchPlaceholder')}
-          className="w-48 rounded-xl border border-dark-700 bg-dark-800 py-2 pl-10 pr-10 text-sm text-dark-100 placeholder-dark-500 focus:border-accent-500 focus:outline-none lg:w-64"
-        />
-        <div className="absolute left-3 top-1/2 -translate-y-1/2 text-dark-500">
-          <SearchIcon />
-        </div>
-        {searchQuery && (
-          <button
-            onClick={() => setSearchQuery('')}
-            className="absolute right-3 top-1/2 -translate-y-1/2 text-dark-500 transition-colors hover:text-dark-300"
-          >
-            <CloseIcon />
-          </button>
-        )}
+    <div ref={containerRef} className="relative hidden sm:block">
+      <input
+        ref={inputRef}
+        type="text"
+        value={searchQuery}
+        onChange={(e) => {
+          setSearchQuery(e.target.value);
+          setIsOpen(true);
+        }}
+        onFocus={() => setIsOpen(true)}
+        onKeyDown={handleKeyDown}
+        placeholder={t('admin.settings.searchPlaceholder')}
+        className="w-48 rounded-xl border border-dark-700 bg-dark-800 py-2 pl-10 pr-10 text-sm text-dark-100 placeholder-dark-500 focus:border-accent-500 focus:outline-none lg:w-64"
+      />
+      <div className="absolute left-3 top-1/2 -translate-y-1/2 text-dark-500">
+        <SearchIcon />
       </div>
-    </>
+      {searchQuery && (
+        <button
+          onClick={() => {
+            setSearchQuery('');
+            setIsOpen(false);
+          }}
+          className="absolute right-3 top-1/2 -translate-y-1/2 text-dark-500 transition-colors hover:text-dark-300"
+        >
+          <CloseIcon />
+        </button>
+      )}
+
+      {/* Autocomplete dropdown */}
+      {isOpen && suggestions.length > 0 && (
+        <div className="absolute right-0 top-full z-50 mt-1 max-h-80 w-80 overflow-y-auto rounded-xl border border-dark-700 bg-dark-800 py-1 shadow-xl">
+          {suggestions.map((setting, index) => (
+            <button
+              key={setting.key}
+              onClick={() => handleSelect(setting)}
+              onMouseEnter={() => setHighlightedIndex(index)}
+              className={`flex w-full flex-col gap-0.5 px-3 py-2 text-left transition-colors ${
+                index === highlightedIndex ? 'bg-accent-500/20' : 'hover:bg-dark-700/50'
+              }`}
+            >
+              <span className="truncate text-sm font-medium text-dark-100">
+                {getSettingDisplayName(setting)}
+              </span>
+              <span className="truncate text-xs text-dark-500">
+                {t(`admin.settings.categories.${setting.category.key}`, setting.category.key)}
+              </span>
+            </button>
+          ))}
+        </div>
+      )}
+    </div>
   );
 }
 
 export function SettingsSearchMobile({
   searchQuery,
   setSearchQuery,
+  allSettings,
+  onSelectSetting,
 }: Omit<SettingsSearchProps, 'resultsCount'>) {
   const { t } = useTranslation();
+  const [isOpen, setIsOpen] = useState(false);
+  const [highlightedIndex, setHighlightedIndex] = useState(0);
+  const containerRef = useRef<HTMLDivElement>(null);
+
+  // Filter settings for autocomplete
+  const suggestions =
+    searchQuery.trim() && allSettings
+      ? allSettings
+          .filter((s) => {
+            const q = searchQuery.toLowerCase().trim();
+            if (s.key.toLowerCase().includes(q)) return true;
+            if (s.name?.toLowerCase().includes(q)) return true;
+            const formattedKey = formatSettingKey(s.name || s.key);
+            const translatedName = t(`admin.settings.settingNames.${formattedKey}`, formattedKey);
+            if (translatedName.toLowerCase().includes(q)) return true;
+            if (s.hint?.description?.toLowerCase().includes(q)) return true;
+            const categoryLabel = t(`admin.settings.categories.${s.category.key}`, s.category.key);
+            if (categoryLabel.toLowerCase().includes(q)) return true;
+            return false;
+          })
+          .slice(0, 8)
+      : [];
+
+  // Close on click outside
+  useEffect(() => {
+    const handleClickOutside = (e: MouseEvent) => {
+      if (containerRef.current && !containerRef.current.contains(e.target as Node)) {
+        setIsOpen(false);
+      }
+    };
+    document.addEventListener('mousedown', handleClickOutside);
+    return () => document.removeEventListener('mousedown', handleClickOutside);
+  }, []);
+
+  useEffect(() => {
+    setHighlightedIndex(0);
+  }, [suggestions.length, searchQuery]);
+
+  const handleSelect = (setting: SettingDefinition) => {
+    setIsOpen(false);
+    setSearchQuery(setting.name || setting.key);
+    onSelectSetting?.(setting);
+  };
+
+  const getSettingDisplayName = (setting: SettingDefinition) => {
+    const formattedKey = formatSettingKey(setting.name || setting.key);
+    return t(`admin.settings.settingNames.${formattedKey}`, formattedKey);
+  };
 
   return (
-    <div className="relative mt-3 sm:hidden">
+    <div ref={containerRef} className="relative mt-3 sm:hidden">
       <input
         type="text"
         value={searchQuery}
-        onChange={(e) => setSearchQuery(e.target.value)}
+        onChange={(e) => {
+          setSearchQuery(e.target.value);
+          setIsOpen(true);
+        }}
+        onFocus={() => setIsOpen(true)}
         placeholder={t('admin.settings.searchPlaceholder')}
         className="w-full rounded-xl border border-dark-700 bg-dark-800 py-2 pl-10 pr-10 text-sm text-dark-100 placeholder-dark-500 focus:border-accent-500 focus:outline-none"
       />
@@ -57,12 +225,37 @@ export function SettingsSearchMobile({
       </div>
       {searchQuery && (
         <button
-          onClick={() => setSearchQuery('')}
+          onClick={() => {
+            setSearchQuery('');
+            setIsOpen(false);
+          }}
           className="absolute right-3 top-1/2 -translate-y-1/2 text-dark-500 transition-colors hover:text-dark-300"
         >
           <CloseIcon />
         </button>
       )}
+
+      {/* Autocomplete dropdown */}
+      {isOpen && suggestions.length > 0 && (
+        <div className="absolute left-0 right-0 top-full z-50 mt-1 max-h-64 overflow-y-auto rounded-xl border border-dark-700 bg-dark-800 py-1 shadow-xl">
+          {suggestions.map((setting, index) => (
+            <button
+              key={setting.key}
+              onClick={() => handleSelect(setting)}
+              className={`flex w-full flex-col gap-0.5 px-3 py-2 text-left transition-colors ${
+                index === highlightedIndex ? 'bg-accent-500/20' : 'hover:bg-dark-700/50'
+              }`}
+            >
+              <span className="truncate text-sm font-medium text-dark-100">
+                {getSettingDisplayName(setting)}
+              </span>
+              <span className="truncate text-xs text-dark-500">
+                {t(`admin.settings.categories.${setting.category.key}`, setting.category.key)}
+              </span>
+            </button>
+          ))}
+        </div>
+      )}
     </div>
   );
 }

src/pages/AdminSettings.tsx

@@ -1,4 +1,4 @@
-import { useState, useMemo, useEffect } from 'react';
+import { useState, useMemo, useEffect, useCallback } from 'react';
 import { useQuery } from '@tanstack/react-query';
 import { useTranslation } from 'react-i18next';
 import { adminSettingsApi, SettingDefinition } from '../api/adminSettings';
@@ -17,6 +17,18 @@ import {
   SettingsSearchResults,
 } from '../components/admin/SettingsSearch';
 
+// Find section ID by category key
+function findSectionByCategory(categoryKey: string): string | null {
+  for (const section of MENU_SECTIONS) {
+    for (const item of section.items) {
+      if (item.categories?.includes(categoryKey)) {
+        return item.id;
+      }
+    }
+  }
+  return null;
+}
+
 export default function AdminSettings() {
   const { t } = useTranslation();
 
@@ -110,6 +122,19 @@ export default function AdminSettings() {
     return allSettings.filter((s: SettingDefinition) => favorites.includes(s.key));
   }, [allSettings, favorites]);
 
+  // Handle setting selection from autocomplete
+  const handleSelectSetting = useCallback(
+    (setting: SettingDefinition) => {
+      const sectionId = findSectionByCategory(setting.category.key);
+      if (sectionId) {
+        setActiveSection(sectionId);
+      }
+      // Set search to setting key to filter to just this setting
+      setSearchQuery(setting.key);
+    },
+    [setActiveSection, setSearchQuery],
+  );
+
   // Render content based on active section
   const renderContent = () => {
     // If searching, always show search results regardless of active section
@@ -175,7 +200,12 @@ export default function AdminSettings() {
           setActiveSection={setActiveSection}
           favoritesCount={favorites.length}
         />
-        <SettingsSearchMobile searchQuery={searchQuery} setSearchQuery={setSearchQuery} />
+        <SettingsSearchMobile
+          searchQuery={searchQuery}
+          setSearchQuery={setSearchQuery}
+          allSettings={allSettings}
+          onSelectSetting={handleSelectSetting}
+        />
         <SettingsSearchResults searchQuery={searchQuery} resultsCount={filteredSettings.length} />
         {renderContent()}
       </div>
@@ -247,6 +277,8 @@ export default function AdminSettings() {
               searchQuery={searchQuery}
               setSearchQuery={setSearchQuery}
               resultsCount={filteredSettings.length}
+              allSettings={allSettings}
+              onSelectSetting={handleSelectSetting}
             />
           </div>
           <SettingsSearchResults searchQuery={searchQuery} resultsCount={filteredSettings.length} />