feat: add Apply Patch tool with patch input and diff view (#196)

* feat: add Apply Patch tool with patch input and diff view

Introduce Apply Patch tool with a patch input field and diff preview
Display target file path or file count for patch operations in tool UI
Update status label to show applying patch during execution

* fix: include apply_patch in editing tools detection

packages/ui/src/components/chat/message/MessageBody.tsx

@@ -283,6 +283,7 @@ const AssistantMessageBody: React.FC<Omit<MessageBodyProps, 'isUser'>> = ({
     errorMessage,
 }) => {
 
+    void _streamPhase;
     void _allowAnimation;
     const [copyHintVisible, setCopyHintVisible] = React.useState(false);
     const copyHintTimeoutRef = React.useRef<number | null>(null);