Fix multiline paste in AI terminal panels

frontend/src/components/panels/TerminalPanel.tsx

@@ -93,6 +93,7 @@ export const TerminalPanel: React.FC<TerminalPanelProps> = React.memo(({ panel,
   const terminalState = panel.state?.customState as TerminalPanelState | undefined;
   const isCliPanel = !!terminalState?.isCliPanel;
   const [isCliReady, setIsCliReady] = useState(!!terminalState?.isCliReady);
+  const isCliPanelRef = useRef(isCliPanel);
 
   // ptyId for the current PTY behind this panel, delivered via
   // `terminal:ptyReady` when spawned through the ptyHost UtilityProcess.
@@ -119,6 +120,10 @@ export const TerminalPanel: React.FC<TerminalPanelProps> = React.memo(({ panel,
 
   // Sync isCliReady from panel prop when it changes (e.g. backend persisted isCliReady
   // before this component subscribed to the IPC event, or panel state was updated externally)
+  useEffect(() => {
+    isCliPanelRef.current = isCliPanel;
+  }, [isCliPanel]);
+
   useEffect(() => {
     if (terminalState?.isCliReady && !isCliReady) {
       setIsCliReady(true);
@@ -822,6 +827,21 @@ export const TerminalPanel: React.FC<TerminalPanelProps> = React.memo(({ panel,
           // The "[Image] " prefix we used to add actually broke the parser's
           // path-detection — on Windows+WSL it caused Claude to cache the file but
           // never attach it to the API call (see commit 7b76ee5).
+          const pasteText = (text: string) => {
+            if (!terminal) return;
+            const shouldProtectMultilinePaste = isCliPanelRef.current && !tuiActiveRef.current && /[\r\n]/.test(text);
+            if (shouldProtectMultilinePaste) {
+              window.electronAPI.invoke(
+                'terminal:input',
+                panel.id,
+                text.replace(/\r\n|\r|\n/g, '\x1b\r'),
+              );
+              return;
+            }
+
+            terminal.paste(text);
+          };
+
           const handlePaste = (e: ClipboardEvent) => {
             // Step 1: Check for images in browser clipboard (works on native Windows/macOS)
             const items = e.clipboardData?.items;
@@ -895,7 +915,7 @@ export const TerminalPanel: React.FC<TerminalPanelProps> = React.memo(({ panel,
 
               // No image found — forward the text content xterm would have pasted.
               if (text && !disposed && terminal) {
-                terminal.paste(text);
+                pasteText(text);
               }
             })();
           };