docs: clarify session search scope (#774)

packages/client/src/components/hermes/chat/SessionSearchModal.vue

@@ -231,6 +231,7 @@ onUnmounted(() => {
         <div class="search-title">{{ t('chat.searchSubtitle') }}</div>
         <div class="search-hint">{{ t('chat.searchHint') }}</div>
       </div>
+      <div class="search-scope">{{ t('chat.searchScope') }}</div>
 
       <NInput
         ref="inputRef"
@@ -309,6 +310,12 @@ onUnmounted(() => {
   color: $text-muted;
 }
 
+.search-scope {
+  font-size: 12px;
+  color: $text-muted;
+  line-height: 1.5;
+}
+
 .search-body {
   max-height: min(60vh, 540px);
   overflow: hidden;

packages/client/src/i18n/locales/en.ts

@@ -169,6 +169,7 @@ export default {
     noSessions: 'No sessions',
     searchTitle: 'Search Sessions',
     searchSubtitle: 'Search by title or message content',
+    searchScope: 'Search scope: Web UI local session database only. Read-only Hermes history sessions are not included.',
     searchHint: 'Cmd/Ctrl+K',
     searchPlaceholder: 'Search sessions...',
     searchEmpty: 'Recent sessions',

packages/client/src/i18n/locales/zh-TW.ts

@@ -168,6 +168,7 @@ export default {
     noSessions: '目前無工作階段',
     searchTitle: '搜尋工作階段',
     searchSubtitle: '依標題或訊息內容搜尋',
+    searchScope: '搜尋範圍：僅 Web UI 本地工作階段資料庫；不包含唯讀 Hermes 歷史工作階段。',
     searchHint: 'Cmd/Ctrl+K',
     searchPlaceholder: '搜尋工作階段...',
     searchEmpty: '最近工作階段',

packages/client/src/i18n/locales/zh.ts

@@ -169,6 +169,7 @@ export default {
     noSessions: '暂无会话',
     searchTitle: '搜索会话',
     searchSubtitle: '按标题或消息内容搜索',
+    searchScope: '搜索范围：仅 Web UI 本地会话库；不包含只读 Hermes 历史会话。',
     searchHint: 'Cmd/Ctrl+K',
     searchPlaceholder: '搜索会话...',
     searchEmpty: '最近会话',

packages/website/src/i18n/en.ts

@@ -16,7 +16,7 @@ export default {
     desc: 'A complete AI agent management dashboard with rich features out of the box.',
     streaming: {
       title: 'Streaming Chat',
-      desc: 'Real-time SSE-powered AI conversations with multi-session management, Markdown rendering, and code syntax highlighting.',
+      desc: 'Real-time Socket.IO-powered AI conversations with multi-session management, Markdown rendering, and code syntax highlighting.',
     },
     platforms: {
       title: '8 Platforms',
@@ -156,7 +156,7 @@ export default {
       intro: 'Explore the core features of Hermes Web UI.',
       chat: {
         title: 'AI Chat',
-        content: 'Real-time streaming chat powered by Server-Sent Events. Supports multi-session management, Markdown rendering with syntax highlighting, tool call inspection, file upload/download, and global search across all conversations (Ctrl+K).',
+        content: 'Real-time chat streaming over Socket.IO /chat-run. Supports multi-session management, Markdown rendering with syntax highlighting, tool call inspection, file upload/download, and Ctrl+K search across the Web UI local session database.',
       },
       kanban: {
         title: 'Kanban Board',

packages/website/src/i18n/zh.ts

@@ -16,7 +16,7 @@ export default {
     desc: '开箱即用的完整 AI Agent 管理仪表板。',
     streaming: {
       title: '流式聊天',
-      desc: '基于 SSE 的实时 AI 对话，支持多会话管理、Markdown 渲染和代码语法高亮。',
+      desc: '基于 Socket.IO 的实时 AI 对话，支持多会话管理、Markdown 渲染和代码语法高亮。',
     },
     platforms: {
       title: '8 大平台',
@@ -156,7 +156,7 @@ export default {
       intro: '探索 Hermes Web UI 的核心功能。',
       chat: {
         title: 'AI 聊天',
-        content: '基于 Server-Sent Events 的实时流式聊天。支持多会话管理、Markdown 渲染与语法高亮、工具调用检查、文件上传/下载以及全局搜索 (Ctrl+K)。',
+        content: '通过 Socket.IO /chat-run 实时流式聊天。支持多会话管理、Markdown 渲染与语法高亮、工具调用检查、文件上传/下载，以及 Ctrl+K 搜索 Web UI 本地会话库。',
       },
       kanban: {
         title: '看板管理',