fix: chat session cannot delete (#14312)

fix #14309



#### PR Dependency Tree


* **PR #14312** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added AI chat session deletion with confirmation dialogs and
success/failure notifications.
* Localized AI chat panel labels, loading messages, and session
management text across multiple languages.

* **Documentation**
* Added internationalization support for chat panel titles, history
loading states, and deletion confirmations.

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settings.</sub>

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packages/frontend/core/src/components/root-app-sidebar/index.tsx

@@ -89,6 +89,7 @@ const AllDocsButton = () => {
 };
 
 const AIChatButton = () => {
+  const t = useI18n();
   const featureFlagService = useService(FeatureFlagService);
   const serverService = useService(ServerService);
   const serverFeatures = useLiveData(serverService.server.features$);
@@ -108,7 +109,9 @@ const AIChatButton = () => {
 
   return (
     <MenuLinkItem icon={<AiOutlineIcon />} active={aiChatActive} to={'/chat'}>
-      <span data-testid="ai-chat">Intelligence</span>
+      <span data-testid="ai-chat">
+        {t['com.affine.workspaceSubPath.chat']()}
+      </span>
     </MenuLinkItem>
   );
 };