use pending history item for shell mode, update as output is received (#471)

packages/cli/src/ui/hooks/shellCommandProcessor.test.ts

@@ -15,6 +15,7 @@ import type { exec as ExecType } from 'child_process'; // For typing the injecte
 
 // Mocks
 const mockAddItemToHistory = vi.fn();
+const mockSetPendingHistoryItem = vi.fn();
 const mockOnExec = vi.fn(async (promise) => await promise);
 const mockOnDebugMessage = vi.fn();
 const mockGetTargetDir = vi.fn();
@@ -94,6 +95,7 @@ describe('useShellCommandProcessor', () => {
     renderHook(() =>
       useShellCommandProcessor(
         mockAddItemToHistory,
+        mockSetPendingHistoryItem,
         mockOnExec,
         mockOnDebugMessage,
         mockConfig,