feat(TopBar): 添加搜索功能组件并优化结构

- 新增 SearchInput、SearchDropdown、SearchResultItem 和 TopBarActions 组件，增强 TopBar 的搜索功能。
- 更新 useTopBar 钩子以支持最近搜索功能，并优化搜索历史管理。
- 修改 TopBar 组件以整合新组件，提升可读性和可维护性。
- 更新 README.md，反映新增组件和功能。

src/layout/TopBar/SearchDropdown.tsx

@@ -0,0 +1,45 @@
+import { type FeatureConfig } from '@/config/features';
+import SearchResultItem from './SearchResultItem';
+
+interface SearchDropdownProps {
+  searchQuery: string;
+  searchResults: FeatureConfig[];
+  recentFeatures: FeatureConfig[];
+  selectedIndex: number;
+  onSelect: (feature: FeatureConfig) => void;
+}
+
+export default function SearchDropdown({
+  searchQuery,
+  searchResults,
+  recentFeatures,
+  selectedIndex,
+  onSelect,
+}: SearchDropdownProps) {
+  const isSearching = searchQuery.trim().length > 0;
+  const items = isSearching ? searchResults : recentFeatures;
+
+  return (
+    <div className="absolute left-0 right-0 top-full z-50 mt-1.5 max-h-80 overflow-y-auto rounded-lg border border-border bg-popover text-popover-foreground shadow-lg animate-in fade-in slide-in-from-top-2 duration-150">
+      <ul role="listbox" className="p-1.5">
+        {!isSearching && items.length > 0 && (
+          <div className="px-3 py-1.5 text-[11px] font-semibold uppercase tracking-wider text-muted-foreground/60">
+            最近搜索
+          </div>
+        )}
+        {isSearching && items.length === 0 ? (
+          <li className="px-4 py-6 text-center text-sm text-muted-foreground">未找到相关工具</li>
+        ) : (
+          items.map((feature, index) => (
+            <SearchResultItem
+              key={feature.key}
+              feature={feature}
+              selected={selectedIndex === index}
+              onSelect={onSelect}
+            />
+          ))
+        )}
+      </ul>
+    </div>
+  );
+}

src/layout/TopBar/SearchInput.tsx

@@ -0,0 +1,56 @@
+import { type RefObject } from 'react';
+import { Search, X } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+
+interface SearchInputProps {
+  inputRef: RefObject<HTMLInputElement | null>;
+  searchQuery: string;
+  onSearchQueryChange: (value: string) => void;
+  onFocus: () => void;
+  onKeyDown: (e: React.KeyboardEvent) => void;
+  onClear: () => void;
+}
+
+export default function SearchInput({
+  inputRef,
+  searchQuery,
+  onSearchQueryChange,
+  onFocus,
+  onKeyDown,
+  onClear,
+}: SearchInputProps) {
+  return (
+    <div className="group relative">
+      <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground/60 transition-colors group-focus-within:text-muted-foreground" />
+      <Input
+        ref={inputRef}
+        type="text"
+        placeholder="搜索工具..."
+        value={searchQuery}
+        onChange={(e) => onSearchQueryChange(e.target.value)}
+        onFocus={onFocus}
+        onKeyDown={onKeyDown}
+        aria-label="搜索工具..."
+        className="h-9 rounded-lg border-border/60 bg-muted/40 pl-9 pr-16 shadow-none focus-visible:ring-1 focus-visible:ring-offset-0 placeholder:text-muted-foreground/50"
+      />
+      {!searchQuery && (
+        <kbd className="pointer-events-none absolute right-3 top-1/2 hidden h-5 -translate-y-1/2 items-center gap-0.5 rounded border border-border/60 bg-muted px-1.5 font-mono text-[10px] font-medium text-muted-foreground/60 sm:inline-flex">
+          ⌘K
+        </kbd>
+      )}
+      {searchQuery && (
+        <Button
+          type="button"
+          variant="ghost"
+          size="icon"
+          onClick={onClear}
+          aria-label="清除搜索"
+          className="absolute right-1 top-1/2 h-7 w-7 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+        >
+          <X className="h-3 w-3" />
+        </Button>
+      )}
+    </div>
+  );
+}

src/layout/TopBar/SearchResultItem.tsx

@@ -0,0 +1,34 @@
+import React from 'react';
+import { type FeatureConfig } from '@/config/features';
+import { cn } from '@/lib/utils';
+
+interface SearchResultItemProps {
+  feature: FeatureConfig;
+  selected: boolean;
+  onSelect: (feature: FeatureConfig) => void;
+}
+
+const SearchResultItem = React.memo(({ feature, selected, onSelect }: SearchResultItemProps) => {
+  return (
+    <li
+      role="option"
+      aria-selected={selected}
+      onClick={() => onSelect(feature)}
+      className={cn(
+        'flex cursor-pointer items-center gap-3 rounded-md px-3 py-2.5 text-sm transition-colors',
+        selected ? 'bg-accent text-accent-foreground' : 'hover:bg-muted/60',
+      )}
+    >
+      <div className="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg bg-muted/80 text-muted-foreground">
+        {feature.icon && <feature.icon className="h-4 w-4" />}
+      </div>
+      <div className="min-w-0 flex-1">
+        <p className="truncate font-medium text-foreground">{feature.label}</p>
+        <p className="mt-0.5 truncate text-xs text-muted-foreground">{feature.description}</p>
+      </div>
+    </li>
+  );
+});
+SearchResultItem.displayName = 'SearchResultItem';
+
+export default SearchResultItem;

src/layout/TopBar/TopBarActions.tsx

@@ -0,0 +1,34 @@
+import { type LucideIcon } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+
+interface TopBarAction {
+  id: string;
+  icon: LucideIcon;
+  title: string;
+  onClick: () => void;
+}
+
+interface TopBarActionsProps {
+  actions: TopBarAction[];
+}
+
+export default function TopBarActions({ actions }: TopBarActionsProps) {
+  return (
+    <div className="flex shrink-0 items-center gap-1">
+      {actions.map(({ id, icon: Icon, title, onClick }) => (
+        <Button
+          key={id}
+          type="button"
+          variant="ghost"
+          size="icon"
+          onClick={onClick}
+          title={title}
+          aria-label={title}
+          className="h-8 w-8 text-muted-foreground"
+        >
+          <Icon className="h-4 w-4" />
+        </Button>
+      ))}
+    </div>
+  );
+}

src/layout/TopBar/constants.ts

@@ -1,2 +1,5 @@
 export const SEARCH_HISTORY_LIMIT = 10;
 export const SEARCH_HISTORY_DISPLAY = 5;
+
+export const isSearchHistory = (val: unknown): val is string[] =>
+  Array.isArray(val) && val.every((item) => typeof item === 'string');

src/layout/TopBar/index.tsx

@@ -1,7 +1,8 @@
-import React from 'react';
-import { ArrowLeft, ExternalLink, Search, X } from 'lucide-react';
-import { type FeatureConfig } from '@/config/features';
-import { cn } from '@/lib/utils';
+import { ArrowLeft, ExternalLink } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import SearchDropdown from './SearchDropdown';
+import SearchInput from './SearchInput';
+import TopBarActions from './TopBarActions';
 import { useTopBar } from './useTopBar';
 
 export default function TopBar() {
@@ -9,7 +10,7 @@ export default function TopBar() {
     searchQuery,
     showResults,
     searchResults,
-    displayedHistory,
+    recentFeatures,
     selectedIndex,
     isDashboard,
     ThemeIcon,
@@ -27,154 +28,64 @@ export default function TopBar() {
     clearSearch,
   } = useTopBar();
 
+  const actions = [
+    { id: 'theme', icon: ThemeIcon, title: themeTitle, onClick: cycleThemeMode },
+    {
+      id: 'open-in-tab',
+      icon: ExternalLink,
+      title: '在标签页打开',
+      onClick: () => {
+        void handleOpenInTab();
+      },
+    },
+  ];
+
+  const handleSearchQueryChange = (value: string) => {
+    setSearchQuery(value);
+    setShowResults(true);
+    setSelectedIndex(-1);
+  };
+
+  const showDropdown = showResults && (searchQuery.trim() || recentFeatures.length > 0);
+
   return (
     <header className="relative z-50 flex h-14 items-center justify-between border-b border-border bg-background px-4">
       <div className="flex w-10 items-center justify-start">
         {!isDashboard && (
-          <button
+          <Button
             type="button"
+            variant="outline"
+            size="icon"
             onClick={goHome}
             aria-label="返回首页"
-            className="flex h-8 w-8 items-center justify-center rounded-md border border-input bg-background text-muted-foreground shadow-sm transition-colors hover:bg-accent hover:text-accent-foreground"
+            className="h-8 w-8 shadow-sm text-muted-foreground"
           >
             <ArrowLeft className="h-4 w-4" />
-          </button>
+          </Button>
         )}
       </div>
 
       <div ref={containerRef} className="relative mx-4 max-w-md flex-1">
-        <div className="group relative">
-          <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground/60 transition-colors group-focus-within:text-muted-foreground" />
-          <input
-            ref={inputRef}
-            type="text"
-            placeholder="搜索工具..."
-            value={searchQuery}
-            onChange={(e) => {
-              setSearchQuery(e.target.value);
-              setShowResults(true);
-              setSelectedIndex(-1);
-            }}
-            onFocus={() => setShowResults(true)}
-            onKeyDown={handleKeyDown}
-            aria-label="搜索工具..."
-            className="h-9 w-full rounded-lg border border-border/60 bg-muted/40 pl-9 pr-16 text-sm transition-all placeholder:text-muted-foreground/50 focus:border-input focus:bg-background focus:outline-none focus:ring-1 focus:ring-ring"
+        <SearchInput
+          inputRef={inputRef}
+          searchQuery={searchQuery}
+          onSearchQueryChange={handleSearchQueryChange}
+          onFocus={() => setShowResults(true)}
+          onKeyDown={handleKeyDown}
+          onClear={clearSearch}
+        />
+        {showDropdown && (
+          <SearchDropdown
+            searchQuery={searchQuery}
+            searchResults={searchResults}
+            recentFeatures={recentFeatures}
+            selectedIndex={selectedIndex}
+            onSelect={handleSelectFeature}
           />
-          {!searchQuery && (
-            <kbd className="pointer-events-none absolute right-3 top-1/2 hidden h-5 -translate-y-1/2 items-center gap-0.5 rounded border border-border/60 bg-muted px-1.5 font-mono text-[10px] font-medium text-muted-foreground/60 sm:inline-flex">
-              ⌘K
-            </kbd>
-          )}
-          {searchQuery && (
-            <button
-              type="button"
-              onClick={clearSearch}
-              aria-label="清除搜索"
-              className="absolute right-2 top-1/2 -translate-y-1/2 rounded-md p-1 text-muted-foreground transition-colors hover:text-foreground"
-            >
-              <X className="h-3 w-3" />
-            </button>
-          )}
-        </div>
-
-        {showResults && (searchQuery.trim() || displayedHistory.length > 0) && (
-          <div className="absolute left-0 right-0 top-full z-50 mt-1.5 max-h-80 overflow-y-auto rounded-lg border border-border bg-popover text-popover-foreground shadow-lg animate-in fade-in slide-in-from-top-2 duration-150">
-            <ul role="listbox" className="p-1.5">
-              {searchQuery.trim() ? (
-                searchResults.length > 0 ? (
-                  searchResults.map((feature, index) => (
-                    <SearchResultItem
-                      key={feature.key}
-                      feature={feature}
-                      selected={selectedIndex === index}
-                      onSelect={handleSelectFeature}
-                    />
-                  ))
-                ) : (
-                  <li className="px-4 py-6 text-center text-sm text-muted-foreground">
-                    未找到相关工具
-                  </li>
-                )
-              ) : (
-                <>
-                  <div className="px-3 py-1.5 text-[11px] font-semibold uppercase tracking-wider text-muted-foreground/60">
-                    最近搜索
-                  </div>
-                  {displayedHistory.map((item, index) =>
-                    item.feature ? (
-                      <SearchResultItem
-                        key={item.key}
-                        feature={item.feature}
-                        selected={selectedIndex === index}
-                        onSelect={handleSelectFeature}
-                      />
-                    ) : null,
-                  )}
-                </>
-              )}
-            </ul>
-          </div>
         )}
       </div>
 
-      <div className="flex shrink-0 items-center gap-1">
-        <IconButton onClick={cycleThemeMode} title={themeTitle}>
-          <ThemeIcon className="h-4 w-4" />
-        </IconButton>
-        <IconButton onClick={handleOpenInTab} title="在标签页打开">
-          <ExternalLink className="h-4 w-4" />
-        </IconButton>
-      </div>
+      <TopBarActions actions={actions} />
     </header>
   );
 }
-
-interface SearchResultItemProps {
-  feature: FeatureConfig;
-  selected: boolean;
-  onSelect: (feature: FeatureConfig) => void;
-}
-
-function SearchResultItem({ feature, selected, onSelect }: SearchResultItemProps) {
-  return (
-    <li
-      role="option"
-      aria-selected={selected}
-      onClick={() => onSelect(feature)}
-      className={cn(
-        'flex cursor-pointer items-center gap-3 rounded-md px-3 py-2.5 text-sm transition-colors',
-        selected ? 'bg-accent text-accent-foreground' : 'hover:bg-muted/60',
-      )}
-    >
-      <div className="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg bg-muted/80 text-muted-foreground">
-        {feature.icon && <feature.icon className="h-4 w-4" />}
-      </div>
-      <div className="min-w-0 flex-1">
-        <p className="truncate font-medium text-foreground">{feature.label}</p>
-        <p className="mt-0.5 truncate text-xs text-muted-foreground">{feature.description}</p>
-      </div>
-    </li>
-  );
-}
-
-function IconButton({
-  children,
-  onClick,
-  title,
-}: {
-  children: React.ReactNode;
-  onClick: () => void;
-  title: string;
-}) {
-  return (
-    <button
-      type="button"
-      onClick={onClick}
-      title={title}
-      aria-label={title}
-      className="flex h-8 w-8 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
-    >
-      {children}
-    </button>
-  );
-}

src/layout/TopBar/useTopBar.ts

@@ -3,20 +3,15 @@ import { Monitor, Moon, Sun } from 'lucide-react';
 import { useRouter } from '@/providers/RouterProvider';
 import { useThemeMode } from '@/providers/ThemeModeProvider';
 import { type FeatureConfig, FEATURES } from '@/config/features';
-import { storageUtil } from '@/utils/chromeStorage';
+import { useStorageState } from '@/utils/useStorageState';
 import { openExtensionPage } from '@/utils/chromeTabs';
-import { SEARCH_HISTORY_DISPLAY, SEARCH_HISTORY_LIMIT } from './constants';
-
-export interface HistoryItem {
-  key: string;
-  feature?: FeatureConfig;
-}
+import { isSearchHistory, SEARCH_HISTORY_DISPLAY, SEARCH_HISTORY_LIMIT } from './constants';
 
 export interface UseTopBarReturn {
   searchQuery: string;
   showResults: boolean;
   searchResults: FeatureConfig[];
-  displayedHistory: HistoryItem[];
+  recentFeatures: FeatureConfig[];
   selectedIndex: number;
   isDashboard: boolean;
   ThemeIcon: typeof Sun;
@@ -40,7 +35,11 @@ export function useTopBar(): UseTopBarReturn {
 
   const [searchQuery, setSearchQuery] = useState('');
   const [showResults, setShowResults] = useState(false);
-  const [searchHistory, setSearchHistory] = useState<string[]>([]);
+  const [searchHistory, setSearchHistory] = useStorageState(
+    'app/searchHistory',
+    [],
+    isSearchHistory,
+  );
   const [selectedIndex, setSelectedIndex] = useState(-1);
 
   const containerRef = useRef<HTMLDivElement>(null);
@@ -73,22 +72,6 @@ export function useTopBar(): UseTopBarReturn {
     return () => document.removeEventListener('keydown', handleGlobalKeyDown);
   }, []);
 
-  useEffect(() => {
-    let cancelled = false;
-
-    storageUtil
-      .get('app/searchHistory', [])
-      .then((history) => {
-        if (cancelled || !history) return;
-        setSearchHistory(history);
-      })
-      .catch((err) => console.error('加载搜索历史失败:', err));
-
-    return () => {
-      cancelled = true;
-    };
-  }, []);
-
   const searchResults = useMemo(() => {
     const query = searchQuery.trim().toLowerCase();
     if (!query) return [];
@@ -102,18 +85,15 @@ export function useTopBar(): UseTopBarReturn {
     if (searchQuery.trim()) return [];
     return searchHistory
       .slice(0, SEARCH_HISTORY_DISPLAY)
-      .map((key) => ({ key, feature: FEATURES.find((f) => f.key === key) }))
-      .filter((item) => item.feature && item.feature.key !== 'dashboard');
+      .map((key) => FEATURES.find((f) => f.key === key))
+      .filter((feature): feature is FeatureConfig => !!feature && feature.key !== 'dashboard');
   }, [searchHistory, searchQuery]);
 
-  const saveToHistory = async (featureKey: string) => {
+  const saveToHistory = (featureKey: string) => {
     if (!featureKey.trim()) return;
-    const nextHistory = [featureKey, ...searchHistory.filter((h) => h !== featureKey)].slice(
-      0,
-      SEARCH_HISTORY_LIMIT,
+    setSearchHistory((prev) =>
+      [featureKey, ...prev.filter((h) => h !== featureKey)].slice(0, SEARCH_HISTORY_LIMIT),
     );
-    setSearchHistory(nextHistory);
-    await storageUtil.set('app/searchHistory', nextHistory).catch((err) => console.error(err));
   };
 
   const handleSelectFeature = (feature: FeatureConfig) => {
@@ -149,8 +129,8 @@ export function useTopBar(): UseTopBarReturn {
           handleSelectFeature(searchResults[selectedIndex]);
         } else {
           const selected = displayedHistory[selectedIndex];
-          if (selected?.feature) {
-            handleSelectFeature(selected.feature);
+          if (selected) {
+            handleSelectFeature(selected);
           }
         }
       } else if (searchQuery.trim() && searchResults.length > 0) {
@@ -171,7 +151,7 @@ export function useTopBar(): UseTopBarReturn {
     searchQuery,
     showResults,
     searchResults,
-    displayedHistory,
+    recentFeatures: displayedHistory,
     selectedIndex,
     isDashboard: currentPage === 'dashboard',
     ThemeIcon,