feat(cli) Custom Commands work in Non-Interactive/Headless Mode (#8305)

packages/cli/src/ui/noninteractive/nonInteractiveUi.ts

@@ -0,0 +1,29 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { CommandContext } from '../commands/types.js';
+
+/**
+ * Creates a UI context object with no-op functions.
+ * Useful for non-interactive environments where UI operations
+ * are not applicable.
+ */
+export function createNonInteractiveUI(): CommandContext['ui'] {
+  return {
+    addItem: (_item, _timestamp) => 0,
+    clear: () => {},
+    setDebugMessage: (_message) => {},
+    loadHistory: (_newHistory) => {},
+    pendingItem: null,
+    setPendingItem: (_item) => {},
+    toggleCorgiMode: () => {},
+    toggleVimEnabled: async () => false,
+    setGeminiMdFileCount: (_count) => {},
+    reloadCommands: () => {},
+    extensionsUpdateState: new Map(),
+    setExtensionsUpdateState: (_updateState) => {},
+  };
+}