fix(search): 外部引擎模式不再过滤本地内容

只有站内搜索模式才把输入用于本地过滤；Google 等模式保持页面内容不变，仅回车调用对应引擎

stash-web/src/AppNext.tsx

@@ -335,6 +335,8 @@ export default function AppNext() {
     searchEngines.find((engine) => engine.id === searchEngineId) ??
     searchEngines.find((engine) => engine.id === site.search.default) ??
     INTERNAL_SEARCH
+  /** 只有站内搜索模式才用输入内容过滤本地内容 */
+  const localKeyword = searchEngine.id === 'internal' ? keywordLower : ''
 
   // 配色：本机偏好优先于站点默认，写在 <html data-scheme> 上，
   // 深色由组件库的令牌块接管，页面与组件都不用改
@@ -484,7 +486,7 @@ export default function AppNext() {
     entries: Record<string, unknown>[],
     options: { detail?: boolean; limit?: number } = {},
   ) {
-    const filtered = entries.filter((entry) => matches(entry, keywordLower))
+    const filtered = entries.filter((entry) => matches(entry, localKeyword))
     const limit = options.limit ?? filtered.length
     const items = filtered.slice(0, limit)
     const open = (itemId: string) => navigate(`/g/${encodeURIComponent(group.key)}/i/${encodeURIComponent(itemId)}`)
@@ -516,7 +518,7 @@ export default function AppNext() {
     const source = rootGroup
       ? (group.entries as unknown as Record<string, unknown>[])
       : collectEntries(group)
-    const all = source.filter((entry) => matches(entry, keywordLower))
+    const all = source.filter((entry) => matches(entry, localKeyword))
     if (all.length === 0) return null
     return (
       <div key={group.key} className="card-group-block">
@@ -585,7 +587,7 @@ export default function AppNext() {
         {cards.map((card) =>
           card.key === 'local-service' ? renderLocalService(card) : renderCard(card),
         )}
-        {keywordLower !== '' && cards.length > 0 && (
+        {localKeyword !== '' && cards.length > 0 && (
           <Notice title={`搜索结果：${keyword.trim()}`}>在卡片与分组内按标题过滤。</Notice>
         )}
       </div>